From d3c459cb50435bbdbf64e75e9c8499be9d04f633 Mon Sep 17 00:00:00 2001
From: Andres Freund <andres@anarazel.de>
Date: Wed, 19 Jan 2022 23:36:50 -0800
Subject: [PATCH v10 15/16] meson: Add meson based buildsystem

Author: Andres Freund
Author: nbyavuz <byavuz81@gmail.com>
Author: Peter Eisentraut <peter@eisentraut.org>
Author: Thomas Munro
Author: John Naylor <john.naylor@enterprisedb.com>
---
 src/include/catalog/meson.build               |  137 +
 src/include/meson.build                       |  168 +
 src/include/nodes/meson.build                 |   54 +
 src/include/parser/meson.build                |   11 +
 src/include/pch/c_pch.h                       |    1 +
 src/include/pch/meson.build                   |    3 +
 src/include/pch/postgres_pch.h                |    1 +
 src/include/pg_config_ext.h.meson             |    7 +
 src/include/storage/meson.build               |   16 +
 src/include/utils/meson.build                 |   46 +
 src/common/meson.build                        |  176 +
 src/common/unicode/meson.build                |  101 +
 src/port/meson.build                          |  188 ++
 src/port/win32ver.rc.in                       |   41 +
 config/meson.build                            |    4 +
 src/backend/access/brin/meson.build           |   12 +
 src/backend/access/common/meson.build         |   18 +
 src/backend/access/gin/meson.build            |   17 +
 src/backend/access/gist/meson.build           |   13 +
 src/backend/access/hash/meson.build           |   12 +
 src/backend/access/heap/meson.build           |   11 +
 src/backend/access/index/meson.build          |    6 +
 src/backend/access/meson.build                |   13 +
 src/backend/access/nbtree/meson.build         |   13 +
 src/backend/access/rmgrdesc/meson.build       |   26 +
 src/backend/access/spgist/meson.build         |   13 +
 src/backend/access/table/meson.build          |    6 +
 src/backend/access/tablesample/meson.build    |    5 +
 src/backend/access/transam/meson.build        |   31 +
 src/backend/bootstrap/meson.build             |   12 +
 src/backend/catalog/meson.build               |   44 +
 src/backend/commands/meson.build              |   51 +
 src/backend/executor/meson.build              |   67 +
 src/backend/foreign/meson.build               |    3 +
 src/backend/jit/llvm/meson.build              |   41 +
 src/backend/jit/meson.build                   |    3 +
 src/backend/lib/meson.build                   |   12 +
 src/backend/libpq/meson.build                 |   32 +
 src/backend/main/meson.build                  |    2 +
 src/backend/meson.build                       |  228 ++
 src/backend/nodes/meson.build                 |   30 +
 src/backend/optimizer/geqo/meson.build        |   17 +
 src/backend/optimizer/meson.build             |    5 +
 src/backend/optimizer/path/meson.build        |   11 +
 src/backend/optimizer/plan/meson.build        |   10 +
 src/backend/optimizer/prep/meson.build        |    7 +
 src/backend/optimizer/util/meson.build        |   16 +
 src/backend/parser/meson.build                |   45 +
 src/backend/partitioning/meson.build          |    5 +
 src/backend/po/meson.build                    |    1 +
 src/backend/port/meson.build                  |   28 +
 src/backend/port/win32/meson.build            |    9 +
 src/backend/postmaster/meson.build            |   15 +
 src/backend/regex/meson.build                 |   15 +
 .../replication/libpqwalreceiver/meson.build  |   13 +
 src/backend/replication/logical/meson.build   |   14 +
 src/backend/replication/meson.build           |   51 +
 src/backend/replication/pgoutput/meson.build  |   11 +
 src/backend/rewrite/meson.build               |    9 +
 src/backend/snowball/meson.build              |   84 +
 src/backend/statistics/meson.build            |    6 +
 src/backend/storage/buffer/meson.build        |    7 +
 src/backend/storage/file/meson.build          |    8 +
 src/backend/storage/freespace/meson.build     |    5 +
 src/backend/storage/ipc/meson.build           |   20 +
 src/backend/storage/large_object/meson.build  |    3 +
 src/backend/storage/lmgr/meson.build          |   18 +
 src/backend/storage/meson.build               |    9 +
 src/backend/storage/page/meson.build          |    5 +
 src/backend/storage/smgr/meson.build          |    4 +
 src/backend/storage/sync/meson.build          |    4 +
 src/backend/tcop/meson.build                  |    8 +
 src/backend/tsearch/meson.build               |   21 +
 src/backend/utils/activity/meson.build        |   18 +
 src/backend/utils/adt/meson.build             |  119 +
 src/backend/utils/cache/meson.build           |   16 +
 src/backend/utils/error/meson.build           |    6 +
 src/backend/utils/fmgr/meson.build            |    8 +
 src/backend/utils/hash/meson.build            |    4 +
 src/backend/utils/init/meson.build            |    4 +
 .../utils/mb/conversion_procs/meson.build     |   38 +
 src/backend/utils/mb/meson.build              |    9 +
 src/backend/utils/meson.build                 |   17 +
 src/backend/utils/misc/meson.build            |   32 +
 src/backend/utils/mmgr/meson.build            |   10 +
 src/backend/utils/resowner/meson.build        |    3 +
 src/backend/utils/sort/meson.build            |    8 +
 src/backend/utils/time/meson.build            |    4 +
 src/fe_utils/meson.build                      |   28 +
 src/bin/initdb/meson.build                    |   39 +
 src/bin/initdb/po/meson.build                 |    1 +
 src/bin/meson.build                           |   20 +
 src/bin/pg_amcheck/meson.build                |   26 +
 src/bin/pg_amcheck/po/meson.build             |    1 +
 src/bin/pg_archivecleanup/meson.build         |   18 +
 src/bin/pg_archivecleanup/po/meson.build      |    1 +
 src/bin/pg_basebackup/meson.build             |   58 +
 src/bin/pg_basebackup/po/meson.build          |    1 +
 src/bin/pg_checksums/meson.build              |   20 +
 src/bin/pg_checksums/po/meson.build           |    1 +
 src/bin/pg_config/meson.build                 |   18 +
 src/bin/pg_config/po/meson.build              |    1 +
 src/bin/pg_controldata/meson.build            |   18 +
 src/bin/pg_controldata/po/meson.build         |    1 +
 src/bin/pg_ctl/meson.build                    |   21 +
 src/bin/pg_ctl/po/meson.build                 |    1 +
 src/bin/pg_dump/meson.build                   |   84 +
 src/bin/pg_dump/po/meson.build                |    1 +
 src/bin/pg_resetwal/meson.build               |   19 +
 src/bin/pg_resetwal/po/meson.build            |    1 +
 src/bin/pg_rewind/meson.build                 |   39 +
 src/bin/pg_rewind/po/meson.build              |    1 +
 src/bin/pg_test_fsync/meson.build             |   18 +
 src/bin/pg_test_fsync/po/meson.build          |    1 +
 src/bin/pg_test_timing/meson.build            |   18 +
 src/bin/pg_test_timing/po/meson.build         |    1 +
 src/bin/pg_upgrade/meson.build                |   40 +
 src/bin/pg_upgrade/po/meson.build             |    1 +
 src/bin/pg_verifybackup/meson.build           |   32 +
 src/bin/pg_verifybackup/po/meson.build        |    1 +
 src/bin/pg_waldump/meson.build                |   28 +
 src/bin/pg_waldump/po/meson.build             |    1 +
 src/bin/pgbench/meson.build                   |   40 +
 src/bin/pgevent/meson.build                   |   31 +
 src/bin/psql/meson.build                      |   68 +
 src/bin/psql/po/meson.build                   |    1 +
 src/bin/scripts/meson.build                   |   50 +
 src/bin/scripts/po/meson.build                |    1 +
 src/interfaces/libpq/meson.build              |  141 +
 src/interfaces/libpq/po/meson.build           |    1 +
 src/interfaces/libpq/test/meson.build         |   15 +
 src/pl/meson.build                            |    5 +
 src/pl/plperl/meson.build                     |   92 +
 src/pl/plperl/po/meson.build                  |    1 +
 src/pl/plpgsql/meson.build                    |    1 +
 src/pl/plpgsql/src/meson.build                |   75 +
 src/pl/plpgsql/src/po/meson.build             |    1 +
 src/pl/plpython/meson.build                   |   99 +
 src/pl/plpython/po/meson.build                |    1 +
 src/pl/tcl/meson.build                        |   55 +
 src/pl/tcl/po/meson.build                     |    1 +
 contrib/adminpack/meson.build                 |   22 +
 contrib/amcheck/meson.build                   |   36 +
 contrib/auth_delay/meson.build                |    4 +
 contrib/auto_explain/meson.build              |   15 +
 contrib/basebackup_to_shell/meson.build       |   22 +
 contrib/basic_archive/meson.build             |   23 +
 contrib/bloom/meson.build                     |   36 +
 contrib/bool_plperl/meson.build               |   39 +
 contrib/btree_gin/meson.build                 |   53 +
 contrib/btree_gist/meson.build                |   84 +
 contrib/citext/meson.build                    |   33 +
 contrib/cube/meson.build                      |   49 +
 contrib/dblink/meson.build                    |   30 +
 contrib/dict_int/meson.build                  |   21 +
 contrib/dict_xsyn/meson.build                 |   28 +
 contrib/earthdistance/meson.build             |   22 +
 contrib/file_fdw/meson.build                  |   21 +
 contrib/fuzzystrmatch/meson.build             |   25 +
 contrib/hstore/meson.build                    |   44 +
 contrib/hstore_plperl/meson.build             |   40 +
 contrib/hstore_plpython/meson.build           |   36 +
 contrib/intagg/meson.build                    |    6 +
 contrib/intarray/meson.build                  |   36 +
 contrib/isn/meson.build                       |   32 +
 contrib/jsonb_plperl/meson.build              |   40 +
 contrib/jsonb_plpython/meson.build            |   35 +
 contrib/lo/meson.build                        |   26 +
 contrib/ltree/meson.build                     |   43 +
 contrib/ltree_plpython/meson.build            |   36 +
 contrib/meson.build                           |   66 +
 contrib/oid2name/meson.build                  |   16 +
 contrib/old_snapshot/meson.build              |   14 +
 contrib/pageinspect/meson.build               |   59 +
 contrib/passwordcheck/meson.build             |   29 +
 contrib/pg_buffercache/meson.build            |   16 +
 contrib/pg_freespacemap/meson.build           |   29 +
 contrib/pg_prewarm/meson.build                |   16 +
 contrib/pg_stat_statements/meson.build        |   34 +
 contrib/pg_surgery/meson.build                |   25 +
 contrib/pg_trgm/meson.build                   |   35 +
 contrib/pg_visibility/meson.build             |   27 +
 contrib/pg_walinspect/meson.build             |   37 +
 contrib/pgcrypto/meson.build                  |  100 +
 contrib/pgrowlocks/meson.build                |   15 +
 contrib/pgstattuple/meson.build               |   32 +
 contrib/postgres_fdw/meson.build              |   33 +
 contrib/seg/meson.build                       |   47 +
 contrib/sepgsql/meson.build                   |   34 +
 contrib/spi/meson.build                       |   47 +
 contrib/sslinfo/meson.build                   |   21 +
 contrib/tablefunc/meson.build                 |   25 +
 contrib/tcn/meson.build                       |   13 +
 contrib/test_decoding/meson.build             |   62 +
 contrib/tsm_system_rows/meson.build           |   24 +
 contrib/tsm_system_time/meson.build           |   24 +
 contrib/unaccent/meson.build                  |   32 +
 contrib/uuid-ossp/meson.build                 |   33 +
 contrib/vacuumlo/meson.build                  |   16 +
 contrib/xml2/meson.build                      |   32 +
 src/interfaces/ecpg/compatlib/meson.build     |   15 +
 src/interfaces/ecpg/ecpglib/meson.build       |   30 +
 src/interfaces/ecpg/ecpglib/po/meson.build    |    1 +
 src/interfaces/ecpg/include/meson.build       |   48 +
 src/interfaces/ecpg/meson.build               |   10 +
 src/interfaces/ecpg/pgtypeslib/meson.build    |   23 +
 src/interfaces/ecpg/preproc/meson.build       |   95 +
 src/interfaces/ecpg/preproc/po/meson.build    |    1 +
 .../ecpg/test/compat_informix/meson.build     |   31 +
 .../ecpg/test/compat_oracle/meson.build       |   18 +
 src/interfaces/ecpg/test/connect/meson.build  |   22 +
 src/interfaces/ecpg/test/meson.build          |   75 +
 .../ecpg/test/pgtypeslib/meson.build          |   21 +
 src/interfaces/ecpg/test/preproc/meson.build  |   38 +
 src/interfaces/ecpg/test/sql/meson.build      |   46 +
 src/interfaces/ecpg/test/thread/meson.build   |   21 +
 src/interfaces/meson.build                    |    2 +
 doc/src/sgml/meson.build                      |  242 ++
 doc/src/sgml/resolv.xsl                       |    7 +
 doc/src/sgml/version.sgml.in                  |    2 +
 src/test/authentication/meson.build           |   11 +
 src/test/icu/meson.build                      |   11 +
 src/test/isolation/meson.build                |   51 +
 src/test/kerberos/meson.build                 |   15 +
 src/test/ldap/meson.build                     |   11 +
 src/test/meson.build                          |   23 +
 src/test/modules/brin/meson.build             |   15 +
 src/test/modules/commit_ts/meson.build        |   18 +
 src/test/modules/delay_execution/meson.build  |   17 +
 src/test/modules/dummy_index_am/meson.build   |   22 +
 src/test/modules/dummy_seclabel/meson.build   |   22 +
 src/test/modules/libpq_pipeline/meson.build   |   20 +
 src/test/modules/meson.build                  |   26 +
 src/test/modules/plsample/meson.build         |   22 +
 src/test/modules/snapshot_too_old/meson.build |   14 +
 src/test/modules/spgist_name_ops/meson.build  |   22 +
 .../ssl_passphrase_callback/meson.build       |   47 +
 src/test/modules/test_bloomfilter/meson.build |   22 +
 src/test/modules/test_ddl_deparse/meson.build |   42 +
 src/test/modules/test_extensions/meson.build  |   40 +
 .../modules/test_ginpostinglist/meson.build   |   22 +
 src/test/modules/test_integerset/meson.build  |   22 +
 src/test/modules/test_misc/meson.build        |   12 +
 src/test/modules/test_oat_hooks/meson.build   |   17 +
 src/test/modules/test_parser/meson.build      |   22 +
 src/test/modules/test_pg_dump/meson.build     |   22 +
 src/test/modules/test_predtest/meson.build    |   22 +
 src/test/modules/test_rbtree/meson.build      |   22 +
 src/test/modules/test_regex/meson.build       |   23 +
 src/test/modules/test_rls_hooks/meson.build   |   16 +
 src/test/modules/test_shm_mq/meson.build      |   26 +
 src/test/modules/unsafe_tests/meson.build     |   11 +
 src/test/modules/worker_spi/meson.build       |   25 +
 src/test/recovery/meson.build                 |   42 +
 src/test/regress/meson.build                  |   58 +
 src/test/ssl/meson.build                      |   13 +
 src/test/subscription/meson.build             |   41 +
 configure                                     |    6 +
 configure.ac                                  |    6 +
 conversion_helpers.txt                        |    9 +
 meson.build                                   | 2921 +++++++++++++++++
 meson_options.txt                             |  175 +
 src/meson.build                               |  269 ++
 src/timezone/meson.build                      |   53 +
 src/timezone/tznames/meson.build              |   21 +
 src/tools/find_meson                          |   20 +
 src/tools/irlink                              |   39 +
 src/tools/msvc/export2def.pl                  |   22 +
 src/tools/msvc/gendef2.pl                     |  177 +
 src/tools/pgflex                              |   63 +
 src/tools/rcgen                               |   34 +
 .../relativize_shared_library_references      |   84 +
 src/tools/relpath.py                          |    6 +
 src/tools/testwrap                            |   32 +
 274 files changed, 11196 insertions(+)
 create mode 100644 src/include/catalog/meson.build
 create mode 100644 src/include/meson.build
 create mode 100644 src/include/nodes/meson.build
 create mode 100644 src/include/parser/meson.build
 create mode 100644 src/include/pch/c_pch.h
 create mode 100644 src/include/pch/meson.build
 create mode 100644 src/include/pch/postgres_pch.h
 create mode 100644 src/include/pg_config_ext.h.meson
 create mode 100644 src/include/storage/meson.build
 create mode 100644 src/include/utils/meson.build
 create mode 100644 src/common/meson.build
 create mode 100644 src/common/unicode/meson.build
 create mode 100644 src/port/meson.build
 create mode 100644 src/port/win32ver.rc.in
 create mode 100644 config/meson.build
 create mode 100644 src/backend/access/brin/meson.build
 create mode 100644 src/backend/access/common/meson.build
 create mode 100644 src/backend/access/gin/meson.build
 create mode 100644 src/backend/access/gist/meson.build
 create mode 100644 src/backend/access/hash/meson.build
 create mode 100644 src/backend/access/heap/meson.build
 create mode 100644 src/backend/access/index/meson.build
 create mode 100644 src/backend/access/meson.build
 create mode 100644 src/backend/access/nbtree/meson.build
 create mode 100644 src/backend/access/rmgrdesc/meson.build
 create mode 100644 src/backend/access/spgist/meson.build
 create mode 100644 src/backend/access/table/meson.build
 create mode 100644 src/backend/access/tablesample/meson.build
 create mode 100644 src/backend/access/transam/meson.build
 create mode 100644 src/backend/bootstrap/meson.build
 create mode 100644 src/backend/catalog/meson.build
 create mode 100644 src/backend/commands/meson.build
 create mode 100644 src/backend/executor/meson.build
 create mode 100644 src/backend/foreign/meson.build
 create mode 100644 src/backend/jit/llvm/meson.build
 create mode 100644 src/backend/jit/meson.build
 create mode 100644 src/backend/lib/meson.build
 create mode 100644 src/backend/libpq/meson.build
 create mode 100644 src/backend/main/meson.build
 create mode 100644 src/backend/meson.build
 create mode 100644 src/backend/nodes/meson.build
 create mode 100644 src/backend/optimizer/geqo/meson.build
 create mode 100644 src/backend/optimizer/meson.build
 create mode 100644 src/backend/optimizer/path/meson.build
 create mode 100644 src/backend/optimizer/plan/meson.build
 create mode 100644 src/backend/optimizer/prep/meson.build
 create mode 100644 src/backend/optimizer/util/meson.build
 create mode 100644 src/backend/parser/meson.build
 create mode 100644 src/backend/partitioning/meson.build
 create mode 100644 src/backend/po/meson.build
 create mode 100644 src/backend/port/meson.build
 create mode 100644 src/backend/port/win32/meson.build
 create mode 100644 src/backend/postmaster/meson.build
 create mode 100644 src/backend/regex/meson.build
 create mode 100644 src/backend/replication/libpqwalreceiver/meson.build
 create mode 100644 src/backend/replication/logical/meson.build
 create mode 100644 src/backend/replication/meson.build
 create mode 100644 src/backend/replication/pgoutput/meson.build
 create mode 100644 src/backend/rewrite/meson.build
 create mode 100644 src/backend/snowball/meson.build
 create mode 100644 src/backend/statistics/meson.build
 create mode 100644 src/backend/storage/buffer/meson.build
 create mode 100644 src/backend/storage/file/meson.build
 create mode 100644 src/backend/storage/freespace/meson.build
 create mode 100644 src/backend/storage/ipc/meson.build
 create mode 100644 src/backend/storage/large_object/meson.build
 create mode 100644 src/backend/storage/lmgr/meson.build
 create mode 100644 src/backend/storage/meson.build
 create mode 100644 src/backend/storage/page/meson.build
 create mode 100644 src/backend/storage/smgr/meson.build
 create mode 100644 src/backend/storage/sync/meson.build
 create mode 100644 src/backend/tcop/meson.build
 create mode 100644 src/backend/tsearch/meson.build
 create mode 100644 src/backend/utils/activity/meson.build
 create mode 100644 src/backend/utils/adt/meson.build
 create mode 100644 src/backend/utils/cache/meson.build
 create mode 100644 src/backend/utils/error/meson.build
 create mode 100644 src/backend/utils/fmgr/meson.build
 create mode 100644 src/backend/utils/hash/meson.build
 create mode 100644 src/backend/utils/init/meson.build
 create mode 100644 src/backend/utils/mb/conversion_procs/meson.build
 create mode 100644 src/backend/utils/mb/meson.build
 create mode 100644 src/backend/utils/meson.build
 create mode 100644 src/backend/utils/misc/meson.build
 create mode 100644 src/backend/utils/mmgr/meson.build
 create mode 100644 src/backend/utils/resowner/meson.build
 create mode 100644 src/backend/utils/sort/meson.build
 create mode 100644 src/backend/utils/time/meson.build
 create mode 100644 src/fe_utils/meson.build
 create mode 100644 src/bin/initdb/meson.build
 create mode 100644 src/bin/initdb/po/meson.build
 create mode 100644 src/bin/meson.build
 create mode 100644 src/bin/pg_amcheck/meson.build
 create mode 100644 src/bin/pg_amcheck/po/meson.build
 create mode 100644 src/bin/pg_archivecleanup/meson.build
 create mode 100644 src/bin/pg_archivecleanup/po/meson.build
 create mode 100644 src/bin/pg_basebackup/meson.build
 create mode 100644 src/bin/pg_basebackup/po/meson.build
 create mode 100644 src/bin/pg_checksums/meson.build
 create mode 100644 src/bin/pg_checksums/po/meson.build
 create mode 100644 src/bin/pg_config/meson.build
 create mode 100644 src/bin/pg_config/po/meson.build
 create mode 100644 src/bin/pg_controldata/meson.build
 create mode 100644 src/bin/pg_controldata/po/meson.build
 create mode 100644 src/bin/pg_ctl/meson.build
 create mode 100644 src/bin/pg_ctl/po/meson.build
 create mode 100644 src/bin/pg_dump/meson.build
 create mode 100644 src/bin/pg_dump/po/meson.build
 create mode 100644 src/bin/pg_resetwal/meson.build
 create mode 100644 src/bin/pg_resetwal/po/meson.build
 create mode 100644 src/bin/pg_rewind/meson.build
 create mode 100644 src/bin/pg_rewind/po/meson.build
 create mode 100644 src/bin/pg_test_fsync/meson.build
 create mode 100644 src/bin/pg_test_fsync/po/meson.build
 create mode 100644 src/bin/pg_test_timing/meson.build
 create mode 100644 src/bin/pg_test_timing/po/meson.build
 create mode 100644 src/bin/pg_upgrade/meson.build
 create mode 100644 src/bin/pg_upgrade/po/meson.build
 create mode 100644 src/bin/pg_verifybackup/meson.build
 create mode 100644 src/bin/pg_verifybackup/po/meson.build
 create mode 100644 src/bin/pg_waldump/meson.build
 create mode 100644 src/bin/pg_waldump/po/meson.build
 create mode 100644 src/bin/pgbench/meson.build
 create mode 100644 src/bin/pgevent/meson.build
 create mode 100644 src/bin/psql/meson.build
 create mode 100644 src/bin/psql/po/meson.build
 create mode 100644 src/bin/scripts/meson.build
 create mode 100644 src/bin/scripts/po/meson.build
 create mode 100644 src/interfaces/libpq/meson.build
 create mode 100644 src/interfaces/libpq/po/meson.build
 create mode 100644 src/interfaces/libpq/test/meson.build
 create mode 100644 src/pl/meson.build
 create mode 100644 src/pl/plperl/meson.build
 create mode 100644 src/pl/plperl/po/meson.build
 create mode 100644 src/pl/plpgsql/meson.build
 create mode 100644 src/pl/plpgsql/src/meson.build
 create mode 100644 src/pl/plpgsql/src/po/meson.build
 create mode 100644 src/pl/plpython/meson.build
 create mode 100644 src/pl/plpython/po/meson.build
 create mode 100644 src/pl/tcl/meson.build
 create mode 100644 src/pl/tcl/po/meson.build
 create mode 100644 contrib/adminpack/meson.build
 create mode 100644 contrib/amcheck/meson.build
 create mode 100644 contrib/auth_delay/meson.build
 create mode 100644 contrib/auto_explain/meson.build
 create mode 100644 contrib/basebackup_to_shell/meson.build
 create mode 100644 contrib/basic_archive/meson.build
 create mode 100644 contrib/bloom/meson.build
 create mode 100644 contrib/bool_plperl/meson.build
 create mode 100644 contrib/btree_gin/meson.build
 create mode 100644 contrib/btree_gist/meson.build
 create mode 100644 contrib/citext/meson.build
 create mode 100644 contrib/cube/meson.build
 create mode 100644 contrib/dblink/meson.build
 create mode 100644 contrib/dict_int/meson.build
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 create mode 100644 src/test/authentication/meson.build
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diff --git a/src/include/catalog/meson.build b/src/include/catalog/meson.build
new file mode 100644
index 00000000000..813a963493f
--- /dev/null
+++ b/src/include/catalog/meson.build
@@ -0,0 +1,137 @@
+catalog_headers = [
+  'pg_proc.h',
+  'pg_type.h',
+  'pg_attribute.h',
+  'pg_class.h',
+  'pg_attrdef.h',
+  'pg_constraint.h',
+  'pg_inherits.h',
+  'pg_index.h',
+  'pg_operator.h',
+  'pg_opfamily.h',
+  'pg_opclass.h',
+  'pg_am.h',
+  'pg_amop.h',
+  'pg_amproc.h',
+  'pg_language.h',
+  'pg_largeobject_metadata.h',
+  'pg_largeobject.h',
+  'pg_aggregate.h',
+  'pg_statistic.h',
+  'pg_statistic_ext.h',
+  'pg_statistic_ext_data.h',
+  'pg_rewrite.h',
+  'pg_trigger.h',
+  'pg_event_trigger.h',
+  'pg_description.h',
+  'pg_cast.h',
+  'pg_enum.h',
+  'pg_namespace.h',
+  'pg_conversion.h',
+  'pg_depend.h',
+  'pg_database.h',
+  'pg_db_role_setting.h',
+  'pg_tablespace.h',
+  'pg_authid.h',
+  'pg_auth_members.h',
+  'pg_shdepend.h',
+  'pg_shdescription.h',
+  'pg_ts_config.h',
+  'pg_ts_config_map.h',
+  'pg_ts_dict.h',
+  'pg_ts_parser.h',
+  'pg_ts_template.h',
+  'pg_extension.h',
+  'pg_foreign_data_wrapper.h',
+  'pg_foreign_server.h',
+  'pg_user_mapping.h',
+  'pg_foreign_table.h',
+  'pg_policy.h',
+  'pg_replication_origin.h',
+  'pg_default_acl.h',
+  'pg_init_privs.h',
+  'pg_seclabel.h',
+  'pg_shseclabel.h',
+  'pg_collation.h',
+  'pg_parameter_acl.h',
+  'pg_partitioned_table.h',
+  'pg_range.h',
+  'pg_transform.h',
+  'pg_sequence.h',
+  'pg_publication.h',
+  'pg_publication_namespace.h',
+  'pg_publication_rel.h',
+  'pg_subscription.h',
+  'pg_subscription_rel.h',
+]
+
+bki_data = [
+  'pg_aggregate.dat',
+  'pg_am.dat',
+  'pg_amop.dat',
+  'pg_amproc.dat',
+  'pg_authid.dat',
+  'pg_cast.dat',
+  'pg_class.dat',
+  'pg_collation.dat',
+  'pg_conversion.dat',
+  'pg_database.dat',
+  'pg_language.dat',
+  'pg_namespace.dat',
+  'pg_opclass.dat',
+  'pg_operator.dat',
+  'pg_opfamily.dat',
+  'pg_proc.dat',
+  'pg_range.dat',
+  'pg_tablespace.dat',
+  'pg_ts_config.dat',
+  'pg_ts_config_map.dat',
+  'pg_ts_dict.dat',
+  'pg_ts_parser.dat',
+  'pg_ts_template.dat',
+  'pg_type.dat',
+]
+bki_data_f = files(bki_data)
+
+
+input = []
+output_files = ['postgres.bki', 'system_constraints.sql', 'schemapg.h', 'system_fk_info.h']
+output_install = [dir_data, dir_data, dir_include_server / 'catalog', dir_include_server / 'catalog']
+
+foreach h : catalog_headers
+  fname = h.split('.h')[0]+'_d.h'
+  input += files(h)
+  output_files += fname
+  output_install += dir_include_server / 'catalog'
+endforeach
+
+generated_headers += custom_target('generated_catalog_headers',
+  output: output_files,
+  install_dir: output_install,
+  input: input,
+  depend_files: bki_data_f,
+  build_by_default: true,
+  install: true,
+  command: [
+    perl,
+    files('../../backend/catalog/genbki.pl'),
+    '--include-path=@SOURCE_ROOT@/src/include',
+    '--set-version='+pg_version_major.to_string(),
+    '--output=@OUTDIR@', '@INPUT@'
+  ],
+)
+
+
+# 'reformat-dat-files' is a convenience target for rewriting the
+# catalog data files in our standard format.  This includes collapsing
+# out any entries that are redundant with a BKI_DEFAULT annotation.
+run_target('reformat-dat-files',
+  command: [perl, files('reformat_dat_file.pl'), '--output', '@CURRENT_SOURCE_DIR@', bki_data_f],
+)
+
+# 'expand-dat-files' is a convenience target for expanding out all
+# default values in the catalog data files.  This should be run before
+# altering or removing any BKI_DEFAULT annotation.
+run_target('expand-dat-files',
+  command: [perl, files('reformat_dat_file.pl'), '--output', '@CURRENT_SOURCE_DIR@', bki_data_f, '--full-tuples'],
+)
diff --git a/src/include/meson.build b/src/include/meson.build
new file mode 100644
index 00000000000..15cdb459107
--- /dev/null
+++ b/src/include/meson.build
@@ -0,0 +1,168 @@
+pg_config_ext = configure_file(input: 'pg_config_ext.h.meson',
+  output : 'pg_config_ext.h',
+  configuration : cdata,
+  install: true,
+  install_dir: dir_include)
+
+pg_config_os = configure_file(
+  output : 'pg_config_os.h',
+  input: files('port/@0@.h'.format(host_system)),
+  install: true,
+  install_dir : dir_include,
+  copy : true)
+
+pg_config = configure_file(
+  output : 'pg_config.h',
+  install : true,
+  install_dir : dir_include,
+  configuration : cdata)
+
+
+config_paths_data = configuration_data()
+config_paths_data.set_quoted('PGBINDIR', dir_prefix / dir_bin)
+config_paths_data.set_quoted('PGSHAREDIR', dir_prefix / dir_data)
+config_paths_data.set_quoted('SYSCONFDIR', dir_prefix / dir_sysconf)
+config_paths_data.set_quoted('INCLUDEDIR', dir_prefix / dir_include)
+config_paths_data.set_quoted('PKGINCLUDEDIR', dir_prefix / dir_include_pkg)
+config_paths_data.set_quoted('INCLUDEDIRSERVER', dir_prefix / dir_include_server)
+config_paths_data.set_quoted('LIBDIR', dir_prefix / dir_lib)
+config_paths_data.set_quoted('PKGLIBDIR', dir_prefix / dir_lib_pkg)
+config_paths_data.set_quoted('LOCALEDIR', dir_prefix / dir_locale)
+config_paths_data.set_quoted('DOCDIR', dir_prefix / dir_doc)
+config_paths_data.set_quoted('HTMLDIR', dir_prefix / dir_doc_html)
+config_paths_data.set_quoted('MANDIR', dir_prefix / dir_man)
+
+
+var_cc = ' '.join(cc.cmd_array())
+var_cpp = ' '.join(g_c_args)
+var_cflags = ' '.join(cbflags + cflags)
+var_cxxflags = ' '.join(cbflags + cxxflags)
+var_cppflags = ' '.join(g_c_args)
+var_cflags_sl = '-fPIC' #FIXME
+var_ldflags = ' '.join(ldflags)
+# FIXME:
+var_ldflags_sl = ''
+var_ldflags_ex = ''
+# FIXME - some extensions might directly use symbols from one of libs. If
+# that symbol isn't used by postgres, and statically linked, it'll cause an
+# undefined symbol at runtime. And obviously it'll cause problems for
+# executables, although those are probably less common.
+var_libs = ''
+
+
+configure_file(
+  output: 'pg_config_paths.h',
+  configuration: config_paths_data,
+  install: false
+)
+
+install_headers(
+  'pg_config_manual.h',
+  'postgres_ext.h',
+  'pg_config_manual.h',
+)
+
+install_headers(
+  'libpq/libpq-fs.h',
+  install_dir: dir_include / 'libpq',
+)
+
+install_headers(
+  'c.h',
+  'port.h',
+  'postgres_fe.h',
+  install_dir: dir_include_internal
+)
+
+install_headers(
+  'libpq/pqcomm.h',
+  install_dir: dir_include_internal / 'libpq',
+)
+
+install_headers(
+  'c.h',
+  'fmgr.h',
+  'funcapi.h',
+  'getaddrinfo.h',
+  'getopt_long.h',
+  'miscadmin.h',
+  'pg_config_manual.h',
+  'pg_getopt.h',
+  'pg_trace.h',
+  'pgstat.h',
+  'pgtar.h',
+  'pgtime.h',
+  'port.h',
+  'postgres.h',
+  'postgres_ext.h',
+  'postgres_fe.h',
+  'rusagestub.h',
+  'windowapi.h',
+  pg_config_ext,
+  pg_config_os,
+  pg_config,
+  install_dir: dir_include_server,
+)
+
+subdir('catalog')
+subdir('nodes')
+subdir('parser')
+subdir('pch')
+subdir('storage')
+subdir('utils')
+
+header_subdirs = [
+  'access',
+  'catalog',
+  'bootstrap',
+  'commands',
+  'common',
+  'datatype',
+  'executor',
+  'fe_utils',
+  'foreign',
+  'jit',
+  'lib',
+  'libpq',
+  'mb',
+  'nodes',
+  'optimizer',
+  'parser',
+  'partitioning',
+  'postmaster',
+  'regex',
+  'replication',
+  'rewrite',
+  'statistics',
+  'storage',
+  'tcop',
+  'snowball',
+  'tsearch',
+  'utils',
+  'port',
+  'portability',
+]
+
+# XXX: installing headers this way has the danger of installing editor files
+# etc, unfortunately install_subdir() doesn't allow including / excluding by
+# pattern currently.
+foreach d : header_subdirs
+  if d == 'catalog'
+    continue
+  endif
+  install_subdir(d, install_dir: dir_include_server,
+                 exclude_files: ['.gitignore', 'meson.build'])
+endforeach
+
+install_subdir('catalog',
+  install_dir: dir_include_server,
+  exclude_files: [
+    '.gitignore',
+    'Makefile',
+    'duplicate_oids',
+    'meson.build',
+    'reformat_dat_file.pl',
+    'renumber_oids.pl',
+    'unused_oids',
+  ] + bki_data,
+)
diff --git a/src/include/nodes/meson.build b/src/include/nodes/meson.build
new file mode 100644
index 00000000000..5e242d25c4f
--- /dev/null
+++ b/src/include/nodes/meson.build
@@ -0,0 +1,54 @@
+node_support_input_i = [
+ 'nodes/nodes.h',
+ 'nodes/primnodes.h',
+ 'nodes/parsenodes.h',
+ 'nodes/pathnodes.h',
+ 'nodes/plannodes.h',
+ 'nodes/execnodes.h',
+ 'access/amapi.h',
+ 'access/sdir.h',
+ 'access/tableam.h',
+ 'access/tsmapi.h',
+ 'commands/event_trigger.h',
+ 'commands/trigger.h',
+ 'executor/tuptable.h',
+ 'foreign/fdwapi.h',
+ 'nodes/extensible.h',
+ 'nodes/lockoptions.h',
+ 'nodes/replnodes.h',
+ 'nodes/supportnodes.h',
+ 'nodes/value.h',
+ 'utils/rel.h',
+]
+
+node_support_input = []
+foreach i : node_support_input_i
+  node_support_input += meson.source_root() / 'src' / 'include' / i
+endforeach
+
+node_support_output = [
+  'nodetags.h',
+  'outfuncs.funcs.c', 'outfuncs.switch.c',
+  'readfuncs.funcs.c', 'readfuncs.switch.c',
+  'copyfuncs.funcs.c', 'copyfuncs.switch.c',
+  'equalfuncs.funcs.c', 'equalfuncs.switch.c',
+]
+node_support_install = [
+  dir_include_server / 'nodes',
+  false, false,
+  false, false,
+  false, false,
+  false, false,
+]
+
+generated_nodes = custom_target('nodetags.h',
+  input: node_support_input,
+  output: node_support_output,
+  command: [
+    perl, files('../../backend/nodes/gen_node_support.pl'),
+    '-o', '@OUTDIR@',
+    '@INPUT@'],
+  install: true,
+  install_dir: node_support_install,
+)
+generated_headers += generated_nodes[0]
diff --git a/src/include/parser/meson.build b/src/include/parser/meson.build
new file mode 100644
index 00000000000..19b1617794f
--- /dev/null
+++ b/src/include/parser/meson.build
@@ -0,0 +1,11 @@
+backend_parser = custom_target('gram',
+  input: [files('../../backend/parser/gram.y')],
+  output: ['gram.c', 'gram.h'],
+  command: [bison_cmd, '-d', '@INPUT@'],
+  install: true,
+  # Only install gram.h, not gram.c
+  install_dir: [false, dir_include_server / 'parser'],
+)
+
+backend_parser_code = backend_parser[0]
+backend_parser_header = backend_parser[1]
diff --git a/src/include/pch/c_pch.h b/src/include/pch/c_pch.h
new file mode 100644
index 00000000000..f40c757ca62
--- /dev/null
+++ b/src/include/pch/c_pch.h
@@ -0,0 +1 @@
+#include "c.h"
diff --git a/src/include/pch/meson.build b/src/include/pch/meson.build
new file mode 100644
index 00000000000..8fb0a1d6b56
--- /dev/null
+++ b/src/include/pch/meson.build
@@ -0,0 +1,3 @@
+# See https://github.com/mesonbuild/meson/issues/10338
+pch_c_h = meson.source_root() / meson.current_source_dir() / 'c_pch.h'
+pch_postgres_h = meson.source_root() / meson.current_source_dir() / 'postgres_pch.h'
diff --git a/src/include/pch/postgres_pch.h b/src/include/pch/postgres_pch.h
new file mode 100644
index 00000000000..71b2f35f76b
--- /dev/null
+++ b/src/include/pch/postgres_pch.h
@@ -0,0 +1 @@
+#include "postgres.h"
diff --git a/src/include/pg_config_ext.h.meson b/src/include/pg_config_ext.h.meson
new file mode 100644
index 00000000000..57cdfca0cfd
--- /dev/null
+++ b/src/include/pg_config_ext.h.meson
@@ -0,0 +1,7 @@
+/*
+ * src/include/pg_config_ext.h.in.  This is generated manually, not by
+ * autoheader, since we want to limit which symbols get defined here.
+ */
+
+/* Define to the name of a signed 64-bit integer type. */
+#mesondefine PG_INT64_TYPE
diff --git a/src/include/storage/meson.build b/src/include/storage/meson.build
new file mode 100644
index 00000000000..ebcb352c888
--- /dev/null
+++ b/src/include/storage/meson.build
@@ -0,0 +1,16 @@
+# FIXME: this creates an unnecessary lwlocknames.c - but it's not
+# obvious how to avoid that: meson insist on output files being in the
+# current dir.
+
+lwlocknames = custom_target('lwlocknames',
+  input : files('../../backend/storage/lmgr/lwlocknames.txt'),
+  output : ['lwlocknames.h', 'lwlocknames.c'],
+  command : [perl, files('../../backend/storage/lmgr/generate-lwlocknames.pl'), '-o', '@OUTDIR@', '@INPUT@'],
+  build_by_default: true,
+  install: true,
+  install_dir: [dir_include_server / 'storage', false],
+)
+
+lwlocknames_h = lwlocknames[0]
+
+generated_backend_headers += lwlocknames_h
diff --git a/src/include/utils/meson.build b/src/include/utils/meson.build
new file mode 100644
index 00000000000..bc4b904793a
--- /dev/null
+++ b/src/include/utils/meson.build
@@ -0,0 +1,46 @@
+errcodes = custom_target('errcodes',
+  input : files('../../backend/utils/errcodes.txt'),
+  output : ['errcodes.h'],
+  command : [perl, files('../../backend/utils/generate-errcodes.pl'), '--outfile', '@OUTPUT@', '@INPUT@'],
+  install: true,
+  install_dir: dir_include_server/'utils',
+)
+generated_headers += errcodes
+
+if dtrace.found()
+  probes_tmp = custom_target('probes.h.tmp',
+    input: files('../../backend/utils/probes.d'),
+    output : 'probes.h.tmp',
+    command : [dtrace, '-C', '-h', '-s', '@INPUT@', '-o', '@OUTPUT@'],
+  )
+  probes = custom_target('probes.h',
+    input: probes_tmp[0],
+    output : 'probes.h',
+    capture: true,
+    command : [sed, '-f', files('../../backend/utils/postprocess_dtrace.sed'), '@INPUT@'],
+    install: true,
+    install_dir: dir_include_server/'utils',
+  )
+else
+  probes = custom_target('probes.h',
+    input: files('../../backend/utils/probes.d'),
+    output : 'probes.h',
+    capture: true,
+    command : [sed, '-f', files('../../backend/utils/Gen_dummy_probes.sed'), '@INPUT@'],
+    install: true,
+    install_dir: dir_include_server/'utils',
+  )
+endif
+
+generated_backend_headers += probes
+
+fmgrtab_target = custom_target('fmgrtab',
+  input: '../catalog/pg_proc.dat',
+  output : ['fmgroids.h', 'fmgrprotos.h', 'fmgrtab.c'],
+  command: [perl, '-I', '@SOURCE_ROOT@/src/backend/catalog/', files('../../backend/utils/Gen_fmgrtab.pl'), '--include-path=@SOURCE_ROOT@/src/include', '--output=@OUTDIR@', '@INPUT@'],
+  install: true,
+  install_dir: [dir_include_server/'utils', dir_include_server/'utils', false],
+)
+
+generated_backend_headers += fmgrtab_target[0]
+generated_backend_headers += fmgrtab_target[1]
diff --git a/src/common/meson.build b/src/common/meson.build
new file mode 100644
index 00000000000..784ff6d1a32
--- /dev/null
+++ b/src/common/meson.build
@@ -0,0 +1,176 @@
+common_sources = files(
+  'archive.c',
+  'base64.c',
+  'checksum_helper.c',
+  'compression.c',
+  'controldata_utils.c',
+  'encnames.c',
+  'exec.c',
+  'file_perm.c',
+  'file_utils.c',
+  'hashfn.c',
+  'ip.c',
+  'jsonapi.c',
+  'keywords.c',
+  'kwlookup.c',
+  'link-canary.c',
+  'md5_common.c',
+  'pg_get_line.c',
+  'pg_lzcompress.c',
+  'pg_prng.c',
+  'pgfnames.c',
+  'psprintf.c',
+  'relpath.c',
+  'rmtree.c',
+  'saslprep.c',
+  'scram-common.c',
+  'string.c',
+  'stringinfo.c',
+  'unicode_norm.c',
+  'username.c',
+  'wait_error.c',
+  'wchar.c',
+)
+
+# FIXME: implement openssl
+if ssl.found()
+  common_sources += files(
+    'cryptohash_openssl.c',
+    'hmac_openssl.c',
+    'protocol_openssl.c',
+  )
+else
+  common_sources += files(
+    'cryptohash.c',
+    'hmac.c',
+    'md5.c',
+    'sha1.c',
+    'sha2.c',
+  )
+endif
+
+common_sources += custom_target('kwlist',
+  input: files('../include/parser/kwlist.h'),
+  output: 'kwlist_d.h',
+  command: [perl, '-I', '@SOURCE_ROOT@/src/tools', files('../tools/gen_keywordlist.pl'),
+      '--extern', '--output', '@OUTDIR@', '@INPUT@'])
+
+
+# The code imported from Ryu gets a pass on declaration-after-statement,
+# in order to keep it more closely aligned with its upstream.
+ryu_sources = files(
+  'd2s.c',
+  'f2s.c',
+)
+ryu_cflags = []
+
+if using_declaration_after_statement_warning
+  ryu_cflags += ['-Wno-declaration-after-statement']
+endif
+
+config_info_sources = files('config_info.c',)
+config_info_cflags = [
+  '-DVAL_CC="@0@"'.format(var_cc),
+  '-DVAL_CPPFLAGS="@0@"'.format(var_cppflags),
+  '-DVAL_CFLAGS="@0@"'.format(var_cflags),
+  '-DVAL_CFLAGS_SL="@0@"'.format(var_cflags_sl),
+  '-DVAL_LDFLAGS="@0@"'.format(var_ldflags),
+  '-DVAL_LDFLAGS_EX="@0@"'.format(var_ldflags_ex),
+  '-DVAL_LDFLAGS_SL="@0@"'.format(var_ldflags_sl),
+  '-DVAL_LIBS="@0@"'.format(var_libs),
+]
+
+# Some files need to be built with different cflags. The different sets are
+# defined here.
+common_cflags = {
+  'ryu': ryu_cflags,
+  'config_info': config_info_cflags,
+}
+common_sources_cflags = {
+  'ryu': ryu_sources,
+  'config_info': config_info_sources
+}
+
+
+# A few files are currently only built for frontend, not server
+# (Mkvcbuild.pm has a copy of this list, too).  logging.c is excluded
+# from OBJS_FRONTEND_SHLIB (shared library) as a matter of policy,
+# because it is not appropriate for general purpose libraries such
+# as libpq to report errors directly.
+
+common_sources_frontend_shlib = common_sources
+common_sources_frontend_shlib += files(
+  'fe_memutils.c',
+  'restricted_token.c',
+  'sprompt.c',
+)
+
+common_sources_frontend_static = common_sources_frontend_shlib
+common_sources_frontend_static += files(
+  'logging.c',
+)
+
+# Build pgport once for backend, once for use in frontend binaries, and once
+# for use in shared libraries
+#
+# XXX: in most environments we could probably link_whole pgcommon_shlib
+# against pgcommon_static, instead of compiling twice.
+#
+# For the server build of pgcommon, depend on lwlocknames_h, because at least
+# cryptohash_openssl.c, hmac_openssl.c depend on it. That's arguably a
+# layering violation, but ...
+pgcommon = {}
+pgcommon_variants = {
+  '_srv' : internal_lib_args + {
+    'sources': common_sources + [lwlocknames_h],
+    'dependencies': [backend_common_code],
+   },
+  '' : default_lib_args + {
+    'sources': common_sources_frontend_static,
+    'dependencies': [frontend_common_code],
+   },
+  '_shlib' : default_lib_args + {
+    'pic': true,
+    'sources': common_sources_frontend_shlib,
+    'dependencies': [frontend_common_code],
+   },
+}
+
+foreach name, opts : pgcommon_variants
+
+  # Build internal static libraries for sets of files that need to be built
+  # with different cflags
+  cflag_libs = []
+  foreach cflagname, sources: common_sources_cflags
+    if sources.length() == 0
+      continue
+    endif
+    c_args = opts.get('c_args', []) + common_cflags[cflagname]
+    cflag_libs += static_library('libpgcommon@0@_@1@'.format(name, cflagname),
+      c_pch: pch_c_h,
+      include_directories: include_directories('.'),
+      kwargs: opts + {
+        'sources': sources,
+        'c_args': c_args,
+        'build_by_default': false,
+        'install': false,
+      },
+    )
+  endforeach
+
+  lib = static_library('libpgcommon@0@'.format(name),
+      link_with: cflag_libs,
+      c_pch: pch_c_h,
+      include_directories: include_directories('.'),
+      kwargs: opts + {
+        'dependencies': opts['dependencies'] + [ssl],
+      }
+    )
+  pgcommon += {name: lib}
+endforeach
+
+common_srv = pgcommon['_srv']
+common_shlib = pgcommon['_shlib']
+common_static = pgcommon['']
+
+subdir('unicode')
diff --git a/src/common/unicode/meson.build b/src/common/unicode/meson.build
new file mode 100644
index 00000000000..cc25f881875
--- /dev/null
+++ b/src/common/unicode/meson.build
@@ -0,0 +1,101 @@
+# These files are part of the Unicode Character Database. Download
+# them on demand.
+
+UNICODE_VERSION = '14.0.0'
+
+unicode_data = {}
+unicode_baseurl = 'https://www.unicode.org/Public/@0@/ucd/@1@'
+
+if not wget.found()
+  subdir_done()
+endif
+
+foreach f : ['UnicodeData.txt', 'EastAsianWidth.txt', 'DerivedNormalizationProps.txt', 'CompositionExclusions.txt', 'NormalizationTest.txt']
+  url = unicode_baseurl.format(UNICODE_VERSION, f)
+  target = custom_target(f,
+    output: f,
+    command: [wget, wget_flags, url],
+    build_by_default: false,
+  )
+  unicode_data += {f: target}
+endforeach
+
+
+update_unicode_targets = []
+
+update_unicode_targets += \
+  custom_target('unicode_norm_table.h',
+    input: [unicode_data['UnicodeData.txt'], unicode_data['CompositionExclusions.txt']],
+    output: ['unicode_norm_table.h', 'unicode_norm_hashfunc.h'],
+    command: [
+      perl, files('generate-unicode_norm_table.pl'),
+      '--outdir', '@OUTDIR@', '@INPUT@'],
+    build_by_default: false,
+  )
+
+update_unicode_targets += \
+  custom_target('unicode_combining_table.h',
+    input: [unicode_data['UnicodeData.txt']],
+    output: ['unicode_combining_table.h'],
+    command: [perl, files('generate-unicode_combining_table.pl'), '@INPUT@'],
+    build_by_default: false,
+    capture: true,
+  )
+
+update_unicode_targets += \
+  custom_target('unicode_east_asian_fw_table.h',
+    input: [unicode_data['EastAsianWidth.txt']],
+    output: ['unicode_east_asian_fw_table.h'],
+    command: [perl, files('generate-unicode_east_asian_fw_table.pl'), '@INPUT@'],
+    build_by_default: false,
+    capture: true,
+  )
+
+update_unicode_targets += \
+  custom_target('unicode_normprops_table.h',
+    input: [unicode_data['DerivedNormalizationProps.txt']],
+    output: ['unicode_normprops_table.h'],
+    command: [perl, files('generate-unicode_normprops_table.pl'), '@INPUT@'],
+    build_by_default: false,
+    capture: true,
+  )
+
+norm_test_table = custom_target('norm_test_table.h',
+    input: [unicode_data['NormalizationTest.txt']],
+    output: ['norm_test_table.h'],
+    command: [perl, files('generate-norm_test_table.pl'), '@INPUT@', '@OUTPUT@'],
+    build_by_default: false,
+  )
+
+inc = include_directories('.')
+
+norm_test = executable('norm_test',
+  ['norm_test.c', norm_test_table],
+  dependencies: [frontend_port_code],
+  include_directories: inc,
+  link_with: [pgport_static, common_static],
+  build_by_default: false,
+  kwargs: default_bin_args + {
+    'install': false,
+  }
+)
+
+if not meson.is_cross_build()
+  norm_test_valid = custom_target('norm_test.valid',
+    output: 'norm_test.valid',
+    depends: update_unicode_targets,
+    command: [norm_test],
+    build_by_default: false,
+    capture: true,
+  )
+
+  run_target('update-unicode',
+    depends: norm_test_valid,
+    command: ['cp', update_unicode_targets, '@SOURCE_ROOT@/src/include/common/']
+  )
+else
+  run_target('update-unicode',
+    depends: update_unicode_targets,
+    command: ['cp', update_unicode_targets, '@SOURCE_ROOT@/src/include/common/']
+  )
+endif
diff --git a/src/port/meson.build b/src/port/meson.build
new file mode 100644
index 00000000000..1dc9f39d6cd
--- /dev/null
+++ b/src/port/meson.build
@@ -0,0 +1,188 @@
+pgport_sources = [
+  'bsearch_arg.c',
+  'chklocale.c',
+  'inet_net_ntop.c',
+  'noblock.c',
+  'path.c',
+  'pg_bitutils.c',
+  'pg_strong_random.c',
+  'pgcheckdir.c',
+  'pgmkdirp.c',
+  'pgsleep.c',
+  'pgstrcasecmp.c',
+  'pgstrsignal.c',
+  'pqsignal.c',
+  'qsort.c',
+  'qsort_arg.c',
+  'quotes.c',
+  'snprintf.c',
+  'strerror.c',
+  'tar.c',
+  'thread.c',
+]
+
+if host_system == 'win32'
+  pgport_sources += files(
+    'dirmod.c',
+    'kill.c',
+    'open.c',
+    'system.c',
+    'win32env.c',
+    'win32error.c',
+    'win32ntdll.c',
+    'win32security.c',
+    'win32setlocale.c',
+    'win32stat.c',
+  )
+endif
+
+if cc.get_id() == 'msvc'
+  pgport_sources += files(
+    'dirent.c',
+  )
+endif
+
+# Replacement functionality to be built if corresponding configure symbol
+# is false
+replace_funcs_neg = [
+    ['dlopen'],
+    ['explicit_bzero'],
+    ['fls'],
+    ['getaddrinfo'],
+    ['getopt'],
+    ['getopt_long'],
+    ['getpeereid'],
+    ['getrusage'],
+    ['gettimeofday'],
+    ['inet_aton'],
+    ['link'],
+    ['mkdtemp'],
+    ['pread'],
+    ['preadv', 'HAVE_DECL_PREADV'],
+    ['pwrite'],
+    ['pwritev', 'HAVE_DECL_PWRITEV'],
+    ['strlcat'],
+    ['strlcpy'],
+    ['strnlen'],
+]
+
+# Replacement functionality to be built if corresponding configure symbol
+# is true
+replace_funcs_pos = [
+  # x86/x64
+  ['pg_crc32c_sse42', 'USE_SSE42_CRC32C'],
+  ['pg_crc32c_sse42', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 'crc'],
+  ['pg_crc32c_sse42_choose', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK'],
+  ['pg_crc32c_sb8', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK'],
+
+  # arm / aarch64
+  ['pg_crc32c_armv8', 'USE_ARMV8_CRC32C'],
+  ['pg_crc32c_armv8', 'USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK', 'crc'],
+  ['pg_crc32c_armv8_choose', 'USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK'],
+  ['pg_crc32c_sb8', 'USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK'],
+
+  # generic fallback
+  ['pg_crc32c_sb8', 'USE_SLICING_BY_8_CRC32C'],
+]
+
+pgport_cflags = {'crc': cflags_crc}
+pgport_sources_cflags = {'crc': []}
+
+foreach f : replace_funcs_neg
+  func = f.get(0)
+  varname = f.get(1, 'HAVE_@0@'.format(func.to_upper()))
+  filename = '@0@.c'.format(func)
+
+  val = '@0@'.format(cdata.get(varname, 'false'))
+  if val == 'false' or val == '0'
+    pgport_sources += files(filename)
+  endif
+endforeach
+
+foreach f : replace_funcs_pos
+  func = f.get(0)
+  varname = f.get(1, 'HAVE_@0@'.format(func.to_upper()))
+  filename = '@0@.c'.format(func)
+
+  val = '@0@'.format(cdata.get(varname, 'false'))
+  if val == 'true' or val == '1'
+    src = files(filename)
+    if f.length() > 2
+      pgport_sources_cflags += {f[2]: pgport_sources_cflags[f[2]] + src}
+    else
+      pgport_sources += src
+    endif
+  endif
+endforeach
+
+
+if (host_system == 'win32' or host_system == 'cygwin') and \
+  (cc.get_id() != 'msvc' or cc.version().version_compare('<14.0'))
+
+  # Cygwin and (apparently, based on test results) Mingw both
+  # have a broken strtof(), so substitute the same replacement
+  # code we use with VS2013. That's not a perfect fix, since
+  # (unlike with VS2013) it doesn't avoid double-rounding, but
+  # we have no better options. To get that, though, we have to
+  # force the file to be compiled despite HAVE_STRTOF.
+  pgport_sources += files('strtof.c')
+  message('On @0@ with compiler @1@ @2@ we will use our strtof wrapper.'.format(
+    host_system, cc.get_id(), cc.version()))
+endif
+
+if not cdata.has('HAVE_PTHREAD_BARRIER_WAIT') and host_system != 'win32'
+   pgport_sources += files('pthread_barrier_wait.c')
+endif
+
+
+# Build pgport once for backend, once for use in frontend binaries, and once
+# for use in shared libraries
+pgport = {}
+pgport_variants = {
+  '_srv' : internal_lib_args + {
+    'dependencies': [backend_port_code],
+   },
+  '' : default_lib_args + {
+    'dependencies': [frontend_port_code],
+   },
+  '_shlib' : default_lib_args + {
+    'pic': true,
+    'dependencies': [frontend_port_code],
+   },
+}
+
+foreach name, opts : pgport_variants
+
+  # Build internal static libraries for sets of files that need to be built
+  # with different cflags
+  cflag_libs = []
+  foreach cflagname, sources: pgport_sources_cflags
+    if sources.length() == 0
+      continue
+    endif
+    c_args = opts.get('c_args', []) + pgport_cflags[cflagname]
+    cflag_libs += static_library('libpgport@0@_@1@'.format(name, cflagname),
+      sources,
+      c_pch: pch_c_h,
+      kwargs: opts + {
+        'c_args': c_args,
+        'build_by_default': false,
+        'install': false,
+      },
+    )
+  endforeach
+
+  lib = static_library('libpgport@0@'.format(name),
+      pgport_sources,
+      link_with: cflag_libs,
+      c_pch: pch_c_h,
+      kwargs: opts + {
+        'dependencies': opts['dependencies'] + [ssl],
+      }
+    )
+  pgport += {name: lib}
+endforeach
+
+pgport_srv = pgport['_srv']
+pgport_static = pgport['']
+pgport_shlib = pgport['_shlib']
diff --git a/src/port/win32ver.rc.in b/src/port/win32ver.rc.in
new file mode 100644
index 00000000000..eb0d45dccf1
--- /dev/null
+++ b/src/port/win32ver.rc.in
@@ -0,0 +1,41 @@
+#include <winver.h>
+#include "pg_config.h"
+
+// https://docs.microsoft.com/en-us/windows/win32/menurc/versioninfo-resource
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION    PG_MAJORVERSION_NUM,0,PG_MINORVERSION_NUM,0
+ PRODUCTVERSION PG_MAJORVERSION_NUM,0,PG_MINORVERSION_NUM,0
+ FILEFLAGSMASK  VS_FFI_FILEFLAGSMASK
+ FILEFLAGS      0x0L
+ FILEOS         VOS_NT_WINDOWS32
+ FILETYPE	@VFT_TYPE@
+ FILESUBTYPE    0x0L
+BEGIN
+ BLOCK "StringFileInfo"
+ BEGIN
+  BLOCK "040904B0"			// U.S. English, Unicode
+  BEGIN
+   VALUE "CompanyName",      "PostgreSQL Global Development Group"
+   VALUE "FileDescription",  "@FILEDESC@"
+   /*
+    * XXX: In the autoconf / src/tools/msvc build this was set differently than
+    * ProductVersion below, using the current date. But that doesn't seem like a
+    * good idea, because it makes the build not reproducible and causes
+    * unnecessary rebuilds?
+    */
+   VALUE "FileVersion",      PG_VERSION
+   VALUE "InternalName",     "@NAME@"
+   VALUE "LegalCopyright", "Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group. Portions Copyright (c) 1994, Regents of the University of California."
+   VALUE "OriginalFileName", "@NAME@.@FILEENDING@"
+   VALUE "ProductName",      "PostgreSQL"
+   VALUE "ProductVersion",   PG_VERSION
+  END
+ END
+ BLOCK "VarFileInfo"
+ BEGIN
+  VALUE "Translation", 0x0409, 1200	// U.S. English, Unicode
+ END
+END
+
+IDI_ICON ICON "@ICO@"
diff --git a/config/meson.build b/config/meson.build
new file mode 100644
index 00000000000..ab19c380bd2
--- /dev/null
+++ b/config/meson.build
@@ -0,0 +1,4 @@
+install_data(
+  'install-sh', 'missing',
+  install_dir: dir_pgxs / 'config'
+)
diff --git a/src/backend/access/brin/meson.build b/src/backend/access/brin/meson.build
new file mode 100644
index 00000000000..a54c7532927
--- /dev/null
+++ b/src/backend/access/brin/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+  'brin.c',
+  'brin_bloom.c',
+  'brin_inclusion.c',
+  'brin_minmax.c',
+  'brin_minmax_multi.c',
+  'brin_pageops.c',
+  'brin_revmap.c',
+  'brin_tuple.c',
+  'brin_validate.c',
+  'brin_xlog.c',
+)
diff --git a/src/backend/access/common/meson.build b/src/backend/access/common/meson.build
new file mode 100644
index 00000000000..857beaa32d3
--- /dev/null
+++ b/src/backend/access/common/meson.build
@@ -0,0 +1,18 @@
+backend_sources += files(
+  'attmap.c',
+  'bufmask.c',
+  'detoast.c',
+  'heaptuple.c',
+  'indextuple.c',
+  'printsimple.c',
+  'printtup.c',
+  'relation.c',
+  'reloptions.c',
+  'scankey.c',
+  'session.c',
+  'syncscan.c',
+  'toast_compression.c',
+  'toast_internals.c',
+  'tupconvert.c',
+  'tupdesc.c',
+)
diff --git a/src/backend/access/gin/meson.build b/src/backend/access/gin/meson.build
new file mode 100644
index 00000000000..56d6f343d54
--- /dev/null
+++ b/src/backend/access/gin/meson.build
@@ -0,0 +1,17 @@
+backend_sources += files(
+  'ginarrayproc.c',
+  'ginbtree.c',
+  'ginbulk.c',
+  'gindatapage.c',
+  'ginentrypage.c',
+  'ginfast.c',
+  'ginget.c',
+  'gininsert.c',
+  'ginlogic.c',
+  'ginpostinglist.c',
+  'ginscan.c',
+  'ginutil.c',
+  'ginvacuum.c',
+  'ginvalidate.c',
+  'ginxlog.c',
+)
diff --git a/src/backend/access/gist/meson.build b/src/backend/access/gist/meson.build
new file mode 100644
index 00000000000..1a996b5e25d
--- /dev/null
+++ b/src/backend/access/gist/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'gist.c',
+  'gistbuild.c',
+  'gistbuildbuffers.c',
+  'gistget.c',
+  'gistproc.c',
+  'gistscan.c',
+  'gistsplit.c',
+  'gistutil.c',
+  'gistvacuum.c',
+  'gistvalidate.c',
+  'gistxlog.c',
+)
diff --git a/src/backend/access/hash/meson.build b/src/backend/access/hash/meson.build
new file mode 100644
index 00000000000..22f2c691c34
--- /dev/null
+++ b/src/backend/access/hash/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+  'hash.c',
+  'hash_xlog.c',
+  'hashfunc.c',
+  'hashinsert.c',
+  'hashovfl.c',
+  'hashpage.c',
+  'hashsearch.c',
+  'hashsort.c',
+  'hashutil.c',
+  'hashvalidate.c',
+)
diff --git a/src/backend/access/heap/meson.build b/src/backend/access/heap/meson.build
new file mode 100644
index 00000000000..f1dca73743c
--- /dev/null
+++ b/src/backend/access/heap/meson.build
@@ -0,0 +1,11 @@
+backend_sources += files(
+  'heapam.c',
+  'heapam_handler.c',
+  'heapam_visibility.c',
+  'heaptoast.c',
+  'hio.c',
+  'pruneheap.c',
+  'rewriteheap.c',
+  'vacuumlazy.c',
+  'visibilitymap.c',
+)
diff --git a/src/backend/access/index/meson.build b/src/backend/access/index/meson.build
new file mode 100644
index 00000000000..18af5533e65
--- /dev/null
+++ b/src/backend/access/index/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'amapi.c',
+  'amvalidate.c',
+  'genam.c',
+  'indexam.c',
+)
diff --git a/src/backend/access/meson.build b/src/backend/access/meson.build
new file mode 100644
index 00000000000..9874291fc0a
--- /dev/null
+++ b/src/backend/access/meson.build
@@ -0,0 +1,13 @@
+subdir('brin')
+subdir('common')
+subdir('gin')
+subdir('gist')
+subdir('hash')
+subdir('heap')
+subdir('index')
+subdir('nbtree')
+subdir('rmgrdesc')
+subdir('spgist')
+subdir('table')
+subdir('tablesample')
+subdir('transam')
diff --git a/src/backend/access/nbtree/meson.build b/src/backend/access/nbtree/meson.build
new file mode 100644
index 00000000000..07dc29e8190
--- /dev/null
+++ b/src/backend/access/nbtree/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'nbtcompare.c',
+  'nbtdedup.c',
+  'nbtinsert.c',
+  'nbtpage.c',
+  'nbtree.c',
+  'nbtsearch.c',
+  'nbtsort.c',
+  'nbtsplitloc.c',
+  'nbtutils.c',
+  'nbtvalidate.c',
+  'nbtxlog.c',
+)
diff --git a/src/backend/access/rmgrdesc/meson.build b/src/backend/access/rmgrdesc/meson.build
new file mode 100644
index 00000000000..f3a6e0a571b
--- /dev/null
+++ b/src/backend/access/rmgrdesc/meson.build
@@ -0,0 +1,26 @@
+# used by frontend programs like pg_waldump
+rmgr_desc_sources = files(
+  'brindesc.c',
+  'clogdesc.c',
+  'committsdesc.c',
+  'dbasedesc.c',
+  'genericdesc.c',
+  'gindesc.c',
+  'gistdesc.c',
+  'hashdesc.c',
+  'heapdesc.c',
+  'logicalmsgdesc.c',
+  'mxactdesc.c',
+  'nbtdesc.c',
+  'relmapdesc.c',
+  'replorigindesc.c',
+  'seqdesc.c',
+  'smgrdesc.c',
+  'spgdesc.c',
+  'standbydesc.c',
+  'tblspcdesc.c',
+  'xactdesc.c',
+  'xlogdesc.c',
+)
+
+backend_sources += rmgr_desc_sources
diff --git a/src/backend/access/spgist/meson.build b/src/backend/access/spgist/meson.build
new file mode 100644
index 00000000000..f18d0d2e53f
--- /dev/null
+++ b/src/backend/access/spgist/meson.build
@@ -0,0 +1,13 @@
+backend_sources += files(
+  'spgdoinsert.c',
+  'spginsert.c',
+  'spgkdtreeproc.c',
+  'spgproc.c',
+  'spgquadtreeproc.c',
+  'spgscan.c',
+  'spgtextproc.c',
+  'spgutils.c',
+  'spgvacuum.c',
+  'spgvalidate.c',
+  'spgxlog.c',
+)
diff --git a/src/backend/access/table/meson.build b/src/backend/access/table/meson.build
new file mode 100644
index 00000000000..66c706d640e
--- /dev/null
+++ b/src/backend/access/table/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'table.c',
+  'tableam.c',
+  'tableamapi.c',
+  'toast_helper.c',
+)
diff --git a/src/backend/access/tablesample/meson.build b/src/backend/access/tablesample/meson.build
new file mode 100644
index 00000000000..63ee8203226
--- /dev/null
+++ b/src/backend/access/tablesample/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'bernoulli.c',
+  'system.c',
+  'tablesample.c',
+)
diff --git a/src/backend/access/transam/meson.build b/src/backend/access/transam/meson.build
new file mode 100644
index 00000000000..c32169bd2c6
--- /dev/null
+++ b/src/backend/access/transam/meson.build
@@ -0,0 +1,31 @@
+backend_sources += files(
+  'clog.c',
+  'commit_ts.c',
+  'generic_xlog.c',
+  'multixact.c',
+  'parallel.c',
+  'rmgr.c',
+  'slru.c',
+  'subtrans.c',
+  'timeline.c',
+  'transam.c',
+  'twophase.c',
+  'twophase_rmgr.c',
+  'varsup.c',
+  'xact.c',
+  'xlog.c',
+  'xlogarchive.c',
+  'xlogfuncs.c',
+  'xloginsert.c',
+  'xlogprefetcher.c',
+  'xlogrecovery.c',
+  'xlogstats.c',
+  'xlogutils.c',
+)
+
+# used by frontend programs to build a frontend xlogreader
+xlogreader_sources = files(
+  'xlogreader.c',
+)
+
+backend_sources += xlogreader_sources
diff --git a/src/backend/bootstrap/meson.build b/src/backend/bootstrap/meson.build
new file mode 100644
index 00000000000..5a06f32d834
--- /dev/null
+++ b/src/backend/bootstrap/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+ 'bootstrap.c')
+
+bootscanner = custom_target('bootscanner',
+  input: ['bootscanner.l'],
+  output: ['bootscanner.c'],
+  command: [flex_cmd, '@INPUT@'],)
+
+generated_backend_sources += custom_target('bootparse',
+  input: ['bootparse.y', bootscanner[0]],
+  output: ['bootparse.c'],
+  command: [bison_cmd, '@INPUT0@'],)
diff --git a/src/backend/catalog/meson.build b/src/backend/catalog/meson.build
new file mode 100644
index 00000000000..08747914516
--- /dev/null
+++ b/src/backend/catalog/meson.build
@@ -0,0 +1,44 @@
+backend_sources += files(
+  'aclchk.c',
+  'catalog.c',
+  'dependency.c',
+  'heap.c',
+  'index.c',
+  'indexing.c',
+  'namespace.c',
+  'objectaccess.c',
+  'objectaddress.c',
+  'partition.c',
+  'pg_aggregate.c',
+  'pg_attrdef.c',
+  'pg_cast.c',
+  'pg_class.c',
+  'pg_collation.c',
+  'pg_constraint.c',
+  'pg_conversion.c',
+  'pg_db_role_setting.c',
+  'pg_depend.c',
+  'pg_enum.c',
+  'pg_inherits.c',
+  'pg_largeobject.c',
+  'pg_namespace.c',
+  'pg_operator.c',
+  'pg_parameter_acl.c',
+  'pg_proc.c',
+  'pg_publication.c',
+  'pg_range.c',
+  'pg_shdepend.c',
+  'pg_subscription.c',
+  'pg_type.c',
+  'storage.c',
+  'toasting.c',
+)
+
+
+install_data(
+  'information_schema.sql',
+  'sql_features.txt',
+  'system_functions.sql',
+  'system_views.sql',
+  install_dir: dir_data,
+)
diff --git a/src/backend/commands/meson.build b/src/backend/commands/meson.build
new file mode 100644
index 00000000000..9b350d025ff
--- /dev/null
+++ b/src/backend/commands/meson.build
@@ -0,0 +1,51 @@
+backend_sources += files(
+  'aggregatecmds.c',
+  'alter.c',
+  'amcmds.c',
+  'analyze.c',
+  'async.c',
+  'cluster.c',
+  'collationcmds.c',
+  'comment.c',
+  'constraint.c',
+  'conversioncmds.c',
+  'copy.c',
+  'copyfrom.c',
+  'copyfromparse.c',
+  'copyto.c',
+  'createas.c',
+  'dbcommands.c',
+  'define.c',
+  'discard.c',
+  'dropcmds.c',
+  'event_trigger.c',
+  'explain.c',
+  'extension.c',
+  'foreigncmds.c',
+  'functioncmds.c',
+  'indexcmds.c',
+  'lockcmds.c',
+  'matview.c',
+  'opclasscmds.c',
+  'operatorcmds.c',
+  'policy.c',
+  'portalcmds.c',
+  'prepare.c',
+  'proclang.c',
+  'publicationcmds.c',
+  'schemacmds.c',
+  'seclabel.c',
+  'sequence.c',
+  'statscmds.c',
+  'subscriptioncmds.c',
+  'tablecmds.c',
+  'tablespace.c',
+  'trigger.c',
+  'tsearchcmds.c',
+  'typecmds.c',
+  'user.c',
+  'vacuum.c',
+  'vacuumparallel.c',
+  'variable.c',
+  'view.c',
+)
diff --git a/src/backend/executor/meson.build b/src/backend/executor/meson.build
new file mode 100644
index 00000000000..518674cfa28
--- /dev/null
+++ b/src/backend/executor/meson.build
@@ -0,0 +1,67 @@
+backend_sources += files(
+  'execAmi.c',
+  'execAsync.c',
+  'execCurrent.c',
+  'execExpr.c',
+  'execExprInterp.c',
+  'execGrouping.c',
+  'execIndexing.c',
+  'execJunk.c',
+  'execMain.c',
+  'execParallel.c',
+  'execPartition.c',
+  'execProcnode.c',
+  'execReplication.c',
+  'execSRF.c',
+  'execScan.c',
+  'execTuples.c',
+  'execUtils.c',
+  'functions.c',
+  'instrument.c',
+  'nodeAgg.c',
+  'nodeAppend.c',
+  'nodeBitmapAnd.c',
+  'nodeBitmapHeapscan.c',
+  'nodeBitmapIndexscan.c',
+  'nodeBitmapOr.c',
+  'nodeCtescan.c',
+  'nodeCustom.c',
+  'nodeForeignscan.c',
+  'nodeFunctionscan.c',
+  'nodeGather.c',
+  'nodeGatherMerge.c',
+  'nodeGroup.c',
+  'nodeHash.c',
+  'nodeHashjoin.c',
+  'nodeIncrementalSort.c',
+  'nodeIndexonlyscan.c',
+  'nodeIndexscan.c',
+  'nodeLimit.c',
+  'nodeLockRows.c',
+  'nodeMaterial.c',
+  'nodeMemoize.c',
+  'nodeMergeAppend.c',
+  'nodeMergejoin.c',
+  'nodeModifyTable.c',
+  'nodeNamedtuplestorescan.c',
+  'nodeNestloop.c',
+  'nodeProjectSet.c',
+  'nodeRecursiveunion.c',
+  'nodeResult.c',
+  'nodeSamplescan.c',
+  'nodeSeqscan.c',
+  'nodeSetOp.c',
+  'nodeSort.c',
+  'nodeSubplan.c',
+  'nodeSubqueryscan.c',
+  'nodeTableFuncscan.c',
+  'nodeTidrangescan.c',
+  'nodeTidscan.c',
+  'nodeUnique.c',
+  'nodeValuesscan.c',
+  'nodeWindowAgg.c',
+  'nodeWorktablescan.c',
+  'spi.c',
+  'tqueue.c',
+  'tstoreReceiver.c',
+)
diff --git a/src/backend/foreign/meson.build b/src/backend/foreign/meson.build
new file mode 100644
index 00000000000..57463db92c1
--- /dev/null
+++ b/src/backend/foreign/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'foreign.c'
+)
diff --git a/src/backend/jit/llvm/meson.build b/src/backend/jit/llvm/meson.build
new file mode 100644
index 00000000000..a867eb60c9f
--- /dev/null
+++ b/src/backend/jit/llvm/meson.build
@@ -0,0 +1,41 @@
+if llvm.found()
+
+  llvmjit_sources = []
+
+  # Infrastructure
+  llvmjit_sources += files(
+    'llvmjit.c',
+    'llvmjit_error.cpp',
+    'llvmjit_inline.cpp',
+    'llvmjit_wrap.cpp',
+  )
+
+  # Code generation
+  llvmjit_sources += files(
+    'llvmjit_deform.c',
+    'llvmjit_expr.c',
+  )
+
+  llvmjit = shared_module('llvmjit',
+    llvmjit_sources,
+    kwargs: pg_mod_args + {
+      'dependencies': pg_mod_args['dependencies'] + [llvm],
+    }
+  )
+
+  backend_targets += llvmjit
+
+  # Note this is intentionally not installed to bitcodedir, as it's not for
+  # inlining
+  llvmjit_types = custom_target('llvmjit_types.bc',
+    kwargs: llvm_irgen_kw + {
+      'input': 'llvmjit_types.c',
+      'output': 'llvmjit_types.bc',
+      'depends': [postgres],
+      'install': true,
+      'install_dir': dir_lib_pkg,
+    }
+  )
+  backend_targets += llvmjit_types
+
+endif
diff --git a/src/backend/jit/meson.build b/src/backend/jit/meson.build
new file mode 100644
index 00000000000..63cd33a4bed
--- /dev/null
+++ b/src/backend/jit/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'jit.c'
+)
diff --git a/src/backend/lib/meson.build b/src/backend/lib/meson.build
new file mode 100644
index 00000000000..53292563d34
--- /dev/null
+++ b/src/backend/lib/meson.build
@@ -0,0 +1,12 @@
+backend_sources += files(
+  'binaryheap.c',
+  'bipartite_match.c',
+  'bloomfilter.c',
+  'dshash.c',
+  'hyperloglog.c',
+  'ilist.c',
+  'integerset.c',
+  'knapsack.c',
+  'pairingheap.c',
+  'rbtree.c'
+)
diff --git a/src/backend/libpq/meson.build b/src/backend/libpq/meson.build
new file mode 100644
index 00000000000..6061269ef13
--- /dev/null
+++ b/src/backend/libpq/meson.build
@@ -0,0 +1,32 @@
+backend_sources += files(
+  'auth-sasl.c',
+  'auth-scram.c',
+  'auth.c',
+  'be-fsstubs.c',
+  'be-secure-common.c',
+  'be-secure.c',
+  'crypt.c',
+  'hba.c',
+  'ifaddr.c',
+  'pqcomm.c',
+  'pqformat.c',
+  'pqmq.c',
+  'pqsignal.c',
+)
+
+if ssl.found()
+  backend_sources += files('be-secure-openssl.c')
+endif
+
+if gssapi.found()
+  backend_sources += files(
+    'be-secure-gssapi.c',
+    'be-gssapi-common.c'
+  )
+endif
+
+install_data(
+  'pg_hba.conf.sample',
+  'pg_ident.conf.sample',
+  install_dir: dir_data,
+)
diff --git a/src/backend/main/meson.build b/src/backend/main/meson.build
new file mode 100644
index 00000000000..241e125f089
--- /dev/null
+++ b/src/backend/main/meson.build
@@ -0,0 +1,2 @@
+main_file = files('main.c')
+backend_sources += main_file
diff --git a/src/backend/meson.build b/src/backend/meson.build
new file mode 100644
index 00000000000..83814006542
--- /dev/null
+++ b/src/backend/meson.build
@@ -0,0 +1,228 @@
+backend_build_deps = [backend_code]
+backend_sources = []
+backend_link_with = [pgport_srv, common_srv]
+backend_c_args = []
+
+generated_backend_sources = []
+
+subdir('access')
+subdir('bootstrap')
+subdir('catalog')
+subdir('commands')
+subdir('executor')
+subdir('foreign')
+subdir('jit')
+subdir('lib')
+subdir('libpq')
+subdir('main')
+subdir('nodes')
+subdir('optimizer')
+subdir('parser')
+subdir('partitioning')
+subdir('port')
+subdir('postmaster')
+subdir('regex')
+subdir('replication')
+subdir('rewrite')
+subdir('statistics')
+subdir('storage')
+subdir('tcop')
+subdir('tsearch')
+subdir('utils')
+
+subdir('po', if_found: libintl)
+
+
+postgres_link_args = []
+postgres_link_depends = []
+
+if host_system == 'win32'
+  if cc.get_id() == 'msvc'
+    postgres_link_args += '/STACK:@0@'.format(cdata.get('WIN32_STACK_RLIMIT'))
+  else
+    postgres_link_args += '-Wl,--stack,@0@'.format(cdata.get('WIN32_STACK_RLIMIT'))
+  endif
+endif
+
+
+# On windows when compiling with msvc we need to make postgres export all its
+# symbols so that extension libraries can use them. For that we need to scan
+# the constituting objects and generate a file specifying all the functions as
+# exported (variables need an "import" declaration in the header, hence
+# PGDLLEXPORT, but functions work without that, due to import libraries
+# basically being trampolines).
+#
+#
+# On meson there's currently no easy way to do this that I found. So we build
+# a static library with all the input objects, run our script to generate
+# exports, and build the final executable using that static library
+#
+#
+# XXX: This needs to be improved.
+#
+
+# NB: There's an outer and inner layer of == windows checks, to allow to
+# exercise most of this on !windows, by widening the outer "layer".
+
+if cc.get_id() == 'msvc' # or true
+
+  postgres_lib = static_library('postgres_lib',
+    backend_sources + timezone_sources + generated_backend_sources,
+    link_whole: backend_link_with,
+    c_pch: pch_postgres_h,
+    c_args: backend_c_args,
+    implicit_include_directories: false,
+    dependencies: backend_build_deps,
+    build_by_default: false,
+    install: false,
+  )
+
+  postgres_def = custom_target('postgres.def',
+    command: [perl, files('../tools/msvc/gendef2.pl'), 'x64', '@OUTPUT@', '@PRIVATE_DIR@', '@INPUT@'],
+    input: [postgres_lib, common_srv, pgport_srv],
+    output: 'postgres.def',
+    depends: [postgres_lib, common_srv, pgport_srv],
+    install: false,
+  )
+
+  if cc.get_id() == 'msvc'
+    postgres_link_args += '/DEF:@0@'.format(postgres_def.full_path())
+    postgres_link_depends += postgres_def
+  endif
+
+  # Unfortunately the msvc linker whines when building an executable with just
+  # libraries, hence the reuse of the 'main' object directly.
+
+  postgres = executable('postgres',
+    objects: [postgres_lib.extract_objects(main_file)],
+    link_with: [postgres_lib],
+    link_args: postgres_link_args,
+    link_depends: postgres_link_depends,
+    export_dynamic: true,
+    implib: true,
+    kwargs: default_bin_args,
+  )
+
+else
+
+  postgres_objs = []
+  postgres_tmpl = static_library('postgres_lib',
+    backend_sources, timezone_sources, generated_backend_sources,
+    link_whole: backend_link_with,
+    c_pch: pch_postgres_h,
+    c_args: backend_c_args,
+    implicit_include_directories: false,
+    dependencies: backend_build_deps,
+    build_by_default: false,
+    install: false,
+  )
+
+  # As of 1/2010:
+  # The probes.o file is necessary for dtrace support on Solaris, and on recent
+  # versions of systemtap.  (Older systemtap releases just produce an empty
+  # file, but that's okay.)  However, macOS's dtrace doesn't use it and doesn't
+  # even recognize the -G option.  So, build probes.o except on macOS.
+  # This might need adjustment as other platforms add dtrace support.
+  #
+  # On at least linux we don't actually need to pass in all the objects, but
+  # at least on FreeBSD and Solaris we have to.
+  #
+  # XXX: The reason we only use the objects for generated sources is that hits
+  # a meson bug. Luckily we don't don't have probes in generated sources...
+  if dtrace.found() and host_system != 'darwin'
+    postgres_objs += custom_target(
+      'probes.o',
+      input: ['utils/probes.d', postgres_tmpl.extract_objects(backend_sources, timezone_sources)],
+      output : 'probes.o',
+      command : [dtrace, '-C', '-G', '-o', '@OUTPUT@', '-s', '@INPUT@'],
+      install: false,
+    )
+  endif
+
+  postgres = executable('postgres',
+    postgres_objs,
+    objects: postgres_tmpl.extract_all_objects(recursive: false),
+    link_args: postgres_link_args,
+    link_with: backend_link_with,
+    export_dynamic: true,
+    dependencies: [backend_build_deps],
+    kwargs: default_bin_args,
+  )
+
+endif
+
+backend_targets += postgres
+
+pg_mod_args = default_mod_args + {
+  'dependencies': [backend_mod_code],
+  'c_args': [],
+  'cpp_args': [],
+ }
+
+if cdata.has('HAVE_VISIBILITY_ATTRIBUTE')
+  pg_mod_args = pg_mod_args + {
+    'c_args': pg_mod_args['c_args'] + ['-fvisibility=hidden'],
+    'cpp_args': pg_mod_args['c_args'] + ['-fvisibility=hidden', '-fvisibility-inlines-hidden'],
+  }
+endif
+
+# Windows / MacOs link shared modules against postgres. To avoid unnecessary
+# build-time dependencies on other operating systems, only add it when
+# necessary.
+if host_system == 'win32' or host_system == 'darwin'
+   pg_mod_args = pg_mod_args + {'link_with': [postgres]}
+endif
+if host_system == 'darwin'
+   pg_mod_args = pg_mod_args + {'link_args': ['-bundle_loader', '@0@'.format(postgres.full_path())]}
+endif
+
+
+# Shared modules that, on some OSs, link against the server binary. Only enter
+# these after we defined the server build.
+
+subdir('jit/llvm')
+subdir('replication/libpqwalreceiver')
+subdir('replication/pgoutput')
+subdir('snowball')
+subdir('utils/mb/conversion_procs')
+
+
+if llvm.found()
+
+  # custom_target() insists on targetting files into the current
+  # directory. But we have files with the same name in different
+  # subdirectories.  generators() don't have that problem, but their results
+  # are not installable. The irlink command copies the files for us.
+  #
+  # FIXME: this needs to be in a central place
+  #
+  # generators don't accept CustomTargetIndex as input or 'depends', nor do
+  # they like targets with more than one output. However, a custom target
+  # accepts them as input without a problem. So we have the below transitive
+  # target :(
+
+  transitive_depend_target = custom_target('stamp',
+    input: generated_headers + generated_backend_headers + generated_backend_sources,
+    output: 'stamp',
+    command: [touch, '@OUTPUT@'],
+    install: false)
+
+  llvm_gen = generator(llvm_irgen_command,
+    arguments: llvm_irgen_args,
+    depends: transitive_depend_target,
+    depfile: '@BASENAME@.c.bc.d',
+    output: '@PLAINNAME@.bc',
+  )
+
+  bc_backend_sources = llvm_gen.process(backend_sources,
+    preserve_path_from: meson.current_source_dir())
+
+  postgres_llvm = custom_target('bitcode',
+    output: ['bitcode'],
+    input: bc_backend_sources,
+    kwargs: llvm_irlink_kw,
+  )
+
+  backend_targets += postgres_llvm
+
+endif
diff --git a/src/backend/nodes/meson.build b/src/backend/nodes/meson.build
new file mode 100644
index 00000000000..3ba5a20a5d4
--- /dev/null
+++ b/src/backend/nodes/meson.build
@@ -0,0 +1,30 @@
+backend_sources += files(
+  'bitmapset.c',
+  'extensible.c',
+  'list.c',
+  'makefuncs.c',
+  'nodeFuncs.c',
+  'nodes.c',
+  'params.c',
+  'print.c',
+  'read.c',
+  'tidbitmap.c',
+  'value.c',
+)
+
+# these include .c files generated in ../../include/nodes, seems nicer to not
+# add that as an include path for the whole backend
+nodefunc_sources = files(
+  'copyfuncs.c',
+  'equalfuncs.c',
+  'outfuncs.c',
+  'readfuncs.c',
+)
+nodefuncs = static_library('nodefuncs',
+  nodefunc_sources,
+  c_pch: pch_c_h,
+  dependencies: [backend_code],
+  kwargs: default_lib_args + {'install': false},
+  include_directories: include_directories('../../include/nodes'),
+)
+backend_link_with += nodefuncs
diff --git a/src/backend/optimizer/geqo/meson.build b/src/backend/optimizer/geqo/meson.build
new file mode 100644
index 00000000000..c04f1dc2dfd
--- /dev/null
+++ b/src/backend/optimizer/geqo/meson.build
@@ -0,0 +1,17 @@
+backend_sources += files(
+  'geqo_copy.c',
+  'geqo_cx.c',
+  'geqo_erx.c',
+  'geqo_eval.c',
+  'geqo_main.c',
+  'geqo_misc.c',
+  'geqo_mutation.c',
+  'geqo_ox1.c',
+  'geqo_ox2.c',
+  'geqo_pmx.c',
+  'geqo_pool.c',
+  'geqo_px.c',
+  'geqo_random.c',
+  'geqo_recombination.c',
+  'geqo_selection.c',
+)
diff --git a/src/backend/optimizer/meson.build b/src/backend/optimizer/meson.build
new file mode 100644
index 00000000000..1ab1d9934ae
--- /dev/null
+++ b/src/backend/optimizer/meson.build
@@ -0,0 +1,5 @@
+subdir('geqo')
+subdir('path')
+subdir('plan')
+subdir('prep')
+subdir('util')
diff --git a/src/backend/optimizer/path/meson.build b/src/backend/optimizer/path/meson.build
new file mode 100644
index 00000000000..310042e7aee
--- /dev/null
+++ b/src/backend/optimizer/path/meson.build
@@ -0,0 +1,11 @@
+backend_sources += files(
+  'allpaths.c',
+  'clausesel.c',
+  'costsize.c',
+  'equivclass.c',
+  'indxpath.c',
+  'joinpath.c',
+  'joinrels.c',
+  'pathkeys.c',
+  'tidpath.c',
+)
diff --git a/src/backend/optimizer/plan/meson.build b/src/backend/optimizer/plan/meson.build
new file mode 100644
index 00000000000..22ec65a3845
--- /dev/null
+++ b/src/backend/optimizer/plan/meson.build
@@ -0,0 +1,10 @@
+backend_sources += files(
+  'analyzejoins.c',
+  'createplan.c',
+  'initsplan.c',
+  'planagg.c',
+  'planmain.c',
+  'planner.c',
+  'setrefs.c',
+  'subselect.c',
+)
diff --git a/src/backend/optimizer/prep/meson.build b/src/backend/optimizer/prep/meson.build
new file mode 100644
index 00000000000..4549a5b0e79
--- /dev/null
+++ b/src/backend/optimizer/prep/meson.build
@@ -0,0 +1,7 @@
+backend_sources += files(
+  'prepagg.c',
+  'prepjointree.c',
+  'prepqual.c',
+  'preptlist.c',
+  'prepunion.c',
+)
diff --git a/src/backend/optimizer/util/meson.build b/src/backend/optimizer/util/meson.build
new file mode 100644
index 00000000000..e7ceaf566b5
--- /dev/null
+++ b/src/backend/optimizer/util/meson.build
@@ -0,0 +1,16 @@
+backend_sources += files(
+  'appendinfo.c',
+  'clauses.c',
+  'inherit.c',
+  'joininfo.c',
+  'orclauses.c',
+  'paramassign.c',
+  'pathnode.c',
+  'placeholder.c',
+  'plancat.c',
+  'predtest.c',
+  'relnode.c',
+  'restrictinfo.c',
+  'tlist.c',
+  'var.c',
+)
diff --git a/src/backend/parser/meson.build b/src/backend/parser/meson.build
new file mode 100644
index 00000000000..eab42cef0ae
--- /dev/null
+++ b/src/backend/parser/meson.build
@@ -0,0 +1,45 @@
+backend_sources += files(
+  'analyze.c',
+  'parse_agg.c',
+  'parse_clause.c',
+  'parse_coerce.c',
+  'parse_collate.c',
+  'parse_cte.c',
+  'parse_enr.c',
+  'parse_expr.c',
+  'parse_func.c',
+  'parse_jsontable.c',
+  'parse_merge.c',
+  'parse_node.c',
+  'parse_oper.c',
+  'parse_param.c',
+  'parse_relation.c',
+  'parse_target.c',
+  'parse_type.c',
+  'parse_utilcmd.c',
+  'scansup.c',
+)
+
+# Build a small utility static lib for the parser. This makes it easier to not
+# depend on gram.h already having been generated for most of the other code
+# (which depends on generated headers having been generated). The generation
+# of the parser is slow...
+
+parser_sources = [files('parser.c')]
+
+backend_scanner = custom_target('scan',
+  input: ['scan.l'],
+  output: ['scan.c'],
+  command: [flex_cmd, flex_backup, flex_fix_warning, '-CF', '-p', '-p', '@INPUT@'],)
+parser_sources += backend_scanner[0]
+
+parser_sources += backend_parser_code
+parser_sources += backend_parser_header
+
+parser = static_library('parser',
+  parser_sources + generated_headers,
+  c_pch: pch_c_h,
+  dependencies: [backend_code],
+  kwargs: default_lib_args + {'install': false},
+)
+backend_link_with += parser
diff --git a/src/backend/partitioning/meson.build b/src/backend/partitioning/meson.build
new file mode 100644
index 00000000000..e5e3806a0cc
--- /dev/null
+++ b/src/backend/partitioning/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'partbounds.c',
+  'partdesc.c',
+  'partprune.c',
+)
diff --git a/src/backend/po/meson.build b/src/backend/po/meson.build
new file mode 100644
index 00000000000..4ace0554680
--- /dev/null
+++ b/src/backend/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('postgres-' + pg_version_major.to_string())
diff --git a/src/backend/port/meson.build b/src/backend/port/meson.build
new file mode 100644
index 00000000000..580a3631910
--- /dev/null
+++ b/src/backend/port/meson.build
@@ -0,0 +1,28 @@
+backend_sources += files(
+  'atomics.c',
+)
+
+
+if cdata.has('USE_UNNAMED_POSIX_SEMAPHORES') or cdata.has('USE_NAMED_POSIX_SEMAPHORES')
+   backend_sources += files('posix_sema.c')
+endif
+
+if cdata.has('USE_SYSV_SEMAPHORES')
+   backend_sources += files('sysv_sema.c')
+endif
+
+if cdata.has('USE_WIN32_SEMAPHORES')
+   backend_sources += files('win32_sema.c')
+endif
+
+if cdata.has('USE_SYSV_SHARED_MEMORY')
+   backend_sources += files('sysv_shmem.c')
+endif
+
+if cdata.has('USE_WIN32_SHARED_MEMORY')
+   backend_sources += files('win32_shmem.c')
+endif
+
+if host_system == 'win32'
+  subdir('win32')
+endif
diff --git a/src/backend/port/win32/meson.build b/src/backend/port/win32/meson.build
new file mode 100644
index 00000000000..e97676f0c78
--- /dev/null
+++ b/src/backend/port/win32/meson.build
@@ -0,0 +1,9 @@
+backend_sources += files(
+  'signal.c',
+  'socket.c',
+  'timer.c',
+)
+
+if cdata.has('HAVE_MINIDUMP_TYPE')
+  backend_sources += files('crashdump.c')
+endif
diff --git a/src/backend/postmaster/meson.build b/src/backend/postmaster/meson.build
new file mode 100644
index 00000000000..293a44ca295
--- /dev/null
+++ b/src/backend/postmaster/meson.build
@@ -0,0 +1,15 @@
+backend_sources += files(
+  'autovacuum.c',
+  'auxprocess.c',
+  'bgworker.c',
+  'bgwriter.c',
+  'checkpointer.c',
+  'fork_process.c',
+  'interrupt.c',
+  'pgarch.c',
+  'postmaster.c',
+  'shell_archive.c',
+  'startup.c',
+  'syslogger.c',
+  'walwriter.c',
+)
diff --git a/src/backend/regex/meson.build b/src/backend/regex/meson.build
new file mode 100644
index 00000000000..d08e21cd6d6
--- /dev/null
+++ b/src/backend/regex/meson.build
@@ -0,0 +1,15 @@
+backend_sources += files(
+  'regcomp.c',
+  'regerror.c',
+  'regexec.c',
+  'regexport.c',
+  'regfree.c',
+  'regprefix.c'
+)
+
+#FIXME
+# mark inclusion dependencies between .c files explicitly
+#regcomp.o: regcomp.c regc_lex.c regc_color.c regc_nfa.c regc_cvec.c \
+#        regc_locale.c regc_pg_locale.c
+#
+#regexec.o: regexec.c rege_dfa.c
diff --git a/src/backend/replication/libpqwalreceiver/meson.build b/src/backend/replication/libpqwalreceiver/meson.build
new file mode 100644
index 00000000000..3fc786c80a0
--- /dev/null
+++ b/src/backend/replication/libpqwalreceiver/meson.build
@@ -0,0 +1,13 @@
+libpqwalreceiver_sources = files(
+  'libpqwalreceiver.c',
+)
+
+libpqwalreceiver = shared_module('pqwalreceiver',
+  libpqwalreceiver_sources,
+  kwargs: pg_mod_args + {
+    'name_prefix': 'lib',
+    'dependencies': pg_mod_args['dependencies'] + [libpq],
+  }
+)
+
+backend_targets += libpqwalreceiver
diff --git a/src/backend/replication/logical/meson.build b/src/backend/replication/logical/meson.build
new file mode 100644
index 00000000000..773583a12ba
--- /dev/null
+++ b/src/backend/replication/logical/meson.build
@@ -0,0 +1,14 @@
+backend_sources += files(
+  'decode.c',
+  'launcher.c',
+  'logical.c',
+  'logicalfuncs.c',
+  'message.c',
+  'origin.c',
+  'proto.c',
+  'relation.c',
+  'reorderbuffer.c',
+  'snapbuild.c',
+  'tablesync.c',
+  'worker.c',
+)
diff --git a/src/backend/replication/meson.build b/src/backend/replication/meson.build
new file mode 100644
index 00000000000..9d4b29df460
--- /dev/null
+++ b/src/backend/replication/meson.build
@@ -0,0 +1,51 @@
+backend_sources += files(
+  'backup_manifest.c',
+  'basebackup.c',
+  'basebackup_copy.c',
+  'basebackup_gzip.c',
+  'basebackup_lz4.c',
+  'basebackup_progress.c',
+  'basebackup_server.c',
+  'basebackup_sink.c',
+  'basebackup_target.c',
+  'basebackup_throttle.c',
+  'basebackup_zstd.c',
+  'slot.c',
+  'slotfuncs.c',
+  'syncrep.c',
+  'walreceiver.c',
+  'walreceiverfuncs.c',
+  'walsender.c',
+)
+
+# [sync]repl_scanner is compiled as part of [sync]repl_gram. The
+# ordering is enforced by making the generation of grammar depend on
+# the scanner generation. That's unnecessarily strict, but overall
+# harmless.
+
+repl_scanner = custom_target('repl_scanner',
+  input : files('repl_scanner.l'),
+  output : ['repl_scanner.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+
+generated_backend_sources += custom_target('repl_gram',
+  input: 'repl_gram.y',
+  output: 'repl_gram.c',
+  depends: repl_scanner,
+  command: [bison_cmd, '@INPUT@'],)
+
+
+syncrep_scanner = custom_target('syncrep_scanner',
+  input: 'syncrep_scanner.l',
+  output: 'syncrep_scanner.c',
+  command: [flex_cmd, '@INPUT@'],)
+
+generated_backend_sources += custom_target('syncrep_gram',
+  input: 'syncrep_gram.y',
+  output: 'syncrep_gram.c',
+  depends: syncrep_scanner,
+  command: [bison_cmd, '@INPUT@'],)
+
+
+subdir('logical')
diff --git a/src/backend/replication/pgoutput/meson.build b/src/backend/replication/pgoutput/meson.build
new file mode 100644
index 00000000000..8ff0a0c6133
--- /dev/null
+++ b/src/backend/replication/pgoutput/meson.build
@@ -0,0 +1,11 @@
+pgoutput_sources = files(
+  'pgoutput.c',
+)
+
+pgoutput = shared_module('pgoutput',
+  pgoutput_sources,
+  kwargs: pg_mod_args + {
+  }
+)
+
+backend_targets += pgoutput
diff --git a/src/backend/rewrite/meson.build b/src/backend/rewrite/meson.build
new file mode 100644
index 00000000000..032e2e409b5
--- /dev/null
+++ b/src/backend/rewrite/meson.build
@@ -0,0 +1,9 @@
+backend_sources += files(
+  'rewriteDefine.c',
+  'rewriteHandler.c',
+  'rewriteManip.c',
+  'rewriteRemove.c',
+  'rewriteSearchCycle.c',
+  'rewriteSupport.c',
+  'rowsecurity.c'
+)
diff --git a/src/backend/snowball/meson.build b/src/backend/snowball/meson.build
new file mode 100644
index 00000000000..1359a002ba4
--- /dev/null
+++ b/src/backend/snowball/meson.build
@@ -0,0 +1,84 @@
+dict_snowball_sources = files(
+  'dict_snowball.c',
+  'libstemmer/api.c',
+  'libstemmer/utilities.c',
+)
+
+dict_snowball_sources += files(
+  'libstemmer/stem_ISO_8859_1_basque.c',
+  'libstemmer/stem_ISO_8859_1_catalan.c',
+  'libstemmer/stem_ISO_8859_1_danish.c',
+  'libstemmer/stem_ISO_8859_1_dutch.c',
+  'libstemmer/stem_ISO_8859_1_english.c',
+  'libstemmer/stem_ISO_8859_1_finnish.c',
+  'libstemmer/stem_ISO_8859_1_french.c',
+  'libstemmer/stem_ISO_8859_1_german.c',
+  'libstemmer/stem_ISO_8859_1_indonesian.c',
+  'libstemmer/stem_ISO_8859_1_irish.c',
+  'libstemmer/stem_ISO_8859_1_italian.c',
+  'libstemmer/stem_ISO_8859_1_norwegian.c',
+  'libstemmer/stem_ISO_8859_1_porter.c',
+  'libstemmer/stem_ISO_8859_1_portuguese.c',
+  'libstemmer/stem_ISO_8859_1_spanish.c',
+  'libstemmer/stem_ISO_8859_1_swedish.c',
+  'libstemmer/stem_ISO_8859_2_hungarian.c',
+  'libstemmer/stem_ISO_8859_2_romanian.c',
+  'libstemmer/stem_KOI8_R_russian.c',
+  'libstemmer/stem_UTF_8_arabic.c',
+  'libstemmer/stem_UTF_8_armenian.c',
+  'libstemmer/stem_UTF_8_basque.c',
+  'libstemmer/stem_UTF_8_catalan.c',
+  'libstemmer/stem_UTF_8_danish.c',
+  'libstemmer/stem_UTF_8_dutch.c',
+  'libstemmer/stem_UTF_8_english.c',
+  'libstemmer/stem_UTF_8_finnish.c',
+  'libstemmer/stem_UTF_8_french.c',
+  'libstemmer/stem_UTF_8_german.c',
+  'libstemmer/stem_UTF_8_greek.c',
+  'libstemmer/stem_UTF_8_hindi.c',
+  'libstemmer/stem_UTF_8_hungarian.c',
+  'libstemmer/stem_UTF_8_indonesian.c',
+  'libstemmer/stem_UTF_8_irish.c',
+  'libstemmer/stem_UTF_8_italian.c',
+  'libstemmer/stem_UTF_8_lithuanian.c',
+  'libstemmer/stem_UTF_8_nepali.c',
+  'libstemmer/stem_UTF_8_norwegian.c',
+  'libstemmer/stem_UTF_8_porter.c',
+  'libstemmer/stem_UTF_8_portuguese.c',
+  'libstemmer/stem_UTF_8_romanian.c',
+  'libstemmer/stem_UTF_8_russian.c',
+  'libstemmer/stem_UTF_8_serbian.c',
+  'libstemmer/stem_UTF_8_spanish.c',
+  'libstemmer/stem_UTF_8_swedish.c',
+  'libstemmer/stem_UTF_8_tamil.c',
+  'libstemmer/stem_UTF_8_turkish.c',
+  'libstemmer/stem_UTF_8_yiddish.c',
+)
+
+# see comment in src/include/snowball/header.h
+stemmer_inc = include_directories('../../include/snowball')
+
+dict_snowball = shared_module('dict_snowball',
+  dict_snowball_sources,
+  c_pch: pch_postgres_h,
+  kwargs: pg_mod_args + {
+    'include_directories': [stemmer_inc],
+  }
+)
+
+snowball_create = custom_target('snowball_create',
+  input: ['snowball_create.pl'],
+  output: ['snowball_create.sql'],
+  depfile: 'snowball_create.dep',
+  command: [perl, '@INPUT0@', '--depfile', '--input', '@CURRENT_SOURCE_DIR@', '--outdir', '@OUTDIR@'],
+  install: true,
+  install_dir: dir_data,
+)
+
+install_subdir('stopwords',
+  install_dir: dir_data / 'tsearch_data',
+  strip_directory: true,
+)
+
+backend_targets += dict_snowball
+backend_targets += snowball_create
diff --git a/src/backend/statistics/meson.build b/src/backend/statistics/meson.build
new file mode 100644
index 00000000000..8530c55f73c
--- /dev/null
+++ b/src/backend/statistics/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'dependencies.c',
+  'extended_stats.c',
+  'mcv.c',
+  'mvdistinct.c',
+)
diff --git a/src/backend/storage/buffer/meson.build b/src/backend/storage/buffer/meson.build
new file mode 100644
index 00000000000..56a59b52484
--- /dev/null
+++ b/src/backend/storage/buffer/meson.build
@@ -0,0 +1,7 @@
+backend_sources += files(
+  'buf_init.c',
+  'buf_table.c',
+  'bufmgr.c',
+  'freelist.c',
+  'localbuf.c',
+)
diff --git a/src/backend/storage/file/meson.build b/src/backend/storage/file/meson.build
new file mode 100644
index 00000000000..e1d5047d4aa
--- /dev/null
+++ b/src/backend/storage/file/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'buffile.c',
+  'copydir.c',
+  'fd.c',
+  'fileset.c',
+  'reinit.c',
+  'sharedfileset.c',
+)
diff --git a/src/backend/storage/freespace/meson.build b/src/backend/storage/freespace/meson.build
new file mode 100644
index 00000000000..e4200ea6527
--- /dev/null
+++ b/src/backend/storage/freespace/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'freespace.c',
+  'fsmpage.c',
+  'indexfsm.c',
+)
diff --git a/src/backend/storage/ipc/meson.build b/src/backend/storage/ipc/meson.build
new file mode 100644
index 00000000000..516bc1d0193
--- /dev/null
+++ b/src/backend/storage/ipc/meson.build
@@ -0,0 +1,20 @@
+backend_sources += files(
+  'barrier.c',
+  'dsm.c',
+  'dsm_impl.c',
+  'ipc.c',
+  'ipci.c',
+  'latch.c',
+  'pmsignal.c',
+  'procarray.c',
+  'procsignal.c',
+  'shm_mq.c',
+  'shm_toc.c',
+  'shmem.c',
+  'shmqueue.c',
+  'signalfuncs.c',
+  'sinval.c',
+  'sinvaladt.c',
+  'standby.c',
+
+)
diff --git a/src/backend/storage/large_object/meson.build b/src/backend/storage/large_object/meson.build
new file mode 100644
index 00000000000..8a181ab9b34
--- /dev/null
+++ b/src/backend/storage/large_object/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'inv_api.c',
+)
diff --git a/src/backend/storage/lmgr/meson.build b/src/backend/storage/lmgr/meson.build
new file mode 100644
index 00000000000..938e7f89894
--- /dev/null
+++ b/src/backend/storage/lmgr/meson.build
@@ -0,0 +1,18 @@
+backend_sources += files(
+  'condition_variable.c',
+  'deadlock.c',
+  'lmgr.c',
+  'lock.c',
+  'lwlock.c',
+  'predicate.c',
+  'proc.c',
+  's_lock.c',
+  'spin.c',
+)
+
+lwlocknames_backend = custom_target('lwlocknames',
+  input : files('lwlocknames.txt'),
+  output : ['lwlocknames.c', 'lwlocknames.h'],
+  command : [perl, files('generate-lwlocknames.pl'), '-o', '@OUTDIR@', '@INPUT@']
+)
+generated_backend_sources += lwlocknames_backend[0]
diff --git a/src/backend/storage/meson.build b/src/backend/storage/meson.build
new file mode 100644
index 00000000000..daad628d74c
--- /dev/null
+++ b/src/backend/storage/meson.build
@@ -0,0 +1,9 @@
+subdir('buffer')
+subdir('file')
+subdir('freespace')
+subdir('ipc')
+subdir('large_object')
+subdir('lmgr')
+subdir('page')
+subdir('smgr')
+subdir('sync')
diff --git a/src/backend/storage/page/meson.build b/src/backend/storage/page/meson.build
new file mode 100644
index 00000000000..2ecd16c952c
--- /dev/null
+++ b/src/backend/storage/page/meson.build
@@ -0,0 +1,5 @@
+backend_sources += files(
+  'bufpage.c',
+  'checksum.c',
+  'itemptr.c',
+)
diff --git a/src/backend/storage/smgr/meson.build b/src/backend/storage/smgr/meson.build
new file mode 100644
index 00000000000..fdeb1223b32
--- /dev/null
+++ b/src/backend/storage/smgr/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'md.c',
+  'smgr.c',
+)
diff --git a/src/backend/storage/sync/meson.build b/src/backend/storage/sync/meson.build
new file mode 100644
index 00000000000..05148b91a8e
--- /dev/null
+++ b/src/backend/storage/sync/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'sync.c',
+
+)
diff --git a/src/backend/tcop/meson.build b/src/backend/tcop/meson.build
new file mode 100644
index 00000000000..fb54aae8122
--- /dev/null
+++ b/src/backend/tcop/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'cmdtag.c',
+  'dest.c',
+  'fastpath.c',
+  'postgres.c',
+  'pquery.c',
+  'utility.c',
+)
diff --git a/src/backend/tsearch/meson.build b/src/backend/tsearch/meson.build
new file mode 100644
index 00000000000..4144e9befc5
--- /dev/null
+++ b/src/backend/tsearch/meson.build
@@ -0,0 +1,21 @@
+backend_sources += files(
+  'dict.c',
+  'dict_ispell.c',
+  'dict_simple.c',
+  'dict_synonym.c',
+  'dict_thesaurus.c',
+  'regis.c',
+  'spell.c',
+  'to_tsany.c',
+  'ts_locale.c',
+  'ts_parse.c',
+  'ts_selfuncs.c',
+  'ts_typanalyze.c',
+  'ts_utils.c',
+  'wparser.c',
+  'wparser_def.c',
+)
+
+install_subdir('dicts',
+  install_dir: dir_data / 'tsearch_data',
+  strip_directory: true)
diff --git a/src/backend/utils/activity/meson.build b/src/backend/utils/activity/meson.build
new file mode 100644
index 00000000000..5b3b558a67d
--- /dev/null
+++ b/src/backend/utils/activity/meson.build
@@ -0,0 +1,18 @@
+backend_sources += files(
+  'backend_progress.c',
+  'backend_status.c',
+  'pgstat.c',
+  'pgstat_archiver.c',
+  'pgstat_bgwriter.c',
+  'pgstat_checkpointer.c',
+  'pgstat_database.c',
+  'pgstat_function.c',
+  'pgstat_relation.c',
+  'pgstat_replslot.c',
+  'pgstat_shmem.c',
+  'pgstat_slru.c',
+  'pgstat_subscription.c',
+  'pgstat_wal.c',
+  'pgstat_xact.c',
+  'wait_event.c',
+)
diff --git a/src/backend/utils/adt/meson.build b/src/backend/utils/adt/meson.build
new file mode 100644
index 00000000000..43d122e0b1e
--- /dev/null
+++ b/src/backend/utils/adt/meson.build
@@ -0,0 +1,119 @@
+backend_sources += files(
+  'acl.c',
+  'amutils.c',
+  'array_expanded.c',
+  'array_selfuncs.c',
+  'array_typanalyze.c',
+  'array_userfuncs.c',
+  'arrayfuncs.c',
+  'arraysubs.c',
+  'arrayutils.c',
+  'ascii.c',
+  'bool.c',
+  'cash.c',
+  'char.c',
+  'cryptohashfuncs.c',
+  'date.c',
+  'datetime.c',
+  'datum.c',
+  'dbsize.c',
+  'domains.c',
+  'encode.c',
+  'enum.c',
+  'expandeddatum.c',
+  'expandedrecord.c',
+  'float.c',
+  'format_type.c',
+  'formatting.c',
+  'genfile.c',
+  'geo_ops.c',
+  'geo_selfuncs.c',
+  'geo_spgist.c',
+  'hbafuncs.c',
+  'inet_cidr_ntop.c',
+  'inet_net_pton.c',
+  'int.c',
+  'int8.c',
+  'json.c',
+  'jsonb.c',
+  'jsonb_gin.c',
+  'jsonb_op.c',
+  'jsonb_util.c',
+  'jsonfuncs.c',
+  'jsonbsubs.c',
+  'jsonpath.c',
+  'jsonpath_exec.c',
+  'like.c',
+  'like_support.c',
+  'lockfuncs.c',
+  'mac.c',
+  'mac8.c',
+  'mcxtfuncs.c',
+  'misc.c',
+  'multirangetypes.c',
+  'multirangetypes_selfuncs.c',
+  'name.c',
+  'network.c',
+  'network_gist.c',
+  'network_selfuncs.c',
+  'network_spgist.c',
+  'numeric.c',
+  'numutils.c',
+  'oid.c',
+  'oracle_compat.c',
+  'orderedsetaggs.c',
+  'partitionfuncs.c',
+  'pg_locale.c',
+  'pg_lsn.c',
+  'pg_upgrade_support.c',
+  'pgstatfuncs.c',
+  'pseudotypes.c',
+  'quote.c',
+  'rangetypes.c',
+  'rangetypes_gist.c',
+  'rangetypes_selfuncs.c',
+  'rangetypes_spgist.c',
+  'rangetypes_typanalyze.c',
+  'regexp.c',
+  'regproc.c',
+  'ri_triggers.c',
+  'rowtypes.c',
+  'ruleutils.c',
+  'selfuncs.c',
+  'tid.c',
+  'timestamp.c',
+  'trigfuncs.c',
+  'tsginidx.c',
+  'tsgistidx.c',
+  'tsquery.c',
+  'tsquery_cleanup.c',
+  'tsquery_gist.c',
+  'tsquery_op.c',
+  'tsquery_rewrite.c',
+  'tsquery_util.c',
+  'tsrank.c',
+  'tsvector.c',
+  'tsvector_op.c',
+  'tsvector_parser.c',
+  'uuid.c',
+  'varbit.c',
+  'varchar.c',
+  'varlena.c',
+  'version.c',
+  'windowfuncs.c',
+  'xid.c',
+  'xid8funcs.c',
+  'xml.c',
+)
+
+
+jsonpath_scan = custom_target('jsonpath_scan',
+  input: ['jsonpath_scan.l'],
+  output: ['jsonpath_scan.c'],
+  command: [flex_cmd, flex_backup, '-CF', '-p', '-p', '@INPUT@'],)
+
+# jsonpath_scan is compiled as part of jsonpath_gram
+generated_backend_sources += custom_target('jsonpath_parse',
+  input: ['jsonpath_gram.y', jsonpath_scan[0]],
+  output: ['jsonpath_gram.c'],
+  command: [bison_cmd, '@INPUT0@'],)
diff --git a/src/backend/utils/cache/meson.build b/src/backend/utils/cache/meson.build
new file mode 100644
index 00000000000..4fe6db6bda6
--- /dev/null
+++ b/src/backend/utils/cache/meson.build
@@ -0,0 +1,16 @@
+backend_sources += files(
+  'attoptcache.c',
+  'catcache.c',
+  'evtcache.c',
+  'inval.c',
+  'lsyscache.c',
+  'partcache.c',
+  'plancache.c',
+  'relcache.c',
+  'relfilenumbermap.c',
+  'relmapper.c',
+  'spccache.c',
+  'syscache.c',
+  'ts_cache.c',
+  'typcache.c',
+)
diff --git a/src/backend/utils/error/meson.build b/src/backend/utils/error/meson.build
new file mode 100644
index 00000000000..325446c8f93
--- /dev/null
+++ b/src/backend/utils/error/meson.build
@@ -0,0 +1,6 @@
+backend_sources += files(
+  'assert.c',
+  'csvlog.c',
+  'elog.c',
+  'jsonlog.c',
+)
diff --git a/src/backend/utils/fmgr/meson.build b/src/backend/utils/fmgr/meson.build
new file mode 100644
index 00000000000..e545b424fd2
--- /dev/null
+++ b/src/backend/utils/fmgr/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'dfmgr.c',
+  'fmgr.c',
+  'funcapi.c',
+)
+
+# fmgrtab.c
+generated_backend_sources += fmgrtab_target[2]
diff --git a/src/backend/utils/hash/meson.build b/src/backend/utils/hash/meson.build
new file mode 100644
index 00000000000..242e2f0ecdf
--- /dev/null
+++ b/src/backend/utils/hash/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'dynahash.c',
+  'pg_crc.c'
+)
diff --git a/src/backend/utils/init/meson.build b/src/backend/utils/init/meson.build
new file mode 100644
index 00000000000..ec9d72c3df1
--- /dev/null
+++ b/src/backend/utils/init/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'globals.c',
+  'miscinit.c',
+  'postinit.c')
diff --git a/src/backend/utils/mb/conversion_procs/meson.build b/src/backend/utils/mb/conversion_procs/meson.build
new file mode 100644
index 00000000000..b84a78b6318
--- /dev/null
+++ b/src/backend/utils/mb/conversion_procs/meson.build
@@ -0,0 +1,38 @@
+encodings = {
+  'cyrillic_and_mic': ['cyrillic_and_mic/cyrillic_and_mic.c'],
+  'euc2004_sjis2004': ['euc2004_sjis2004/euc2004_sjis2004.c'],
+  'euc_cn_and_mic': ['euc_cn_and_mic/euc_cn_and_mic.c'],
+  'euc_jp_and_sjis': ['euc_jp_and_sjis/euc_jp_and_sjis.c'],
+  'euc_kr_and_mic': ['euc_kr_and_mic/euc_kr_and_mic.c'],
+  'euc_tw_and_big5': [
+    'euc_tw_and_big5/euc_tw_and_big5.c',
+    'euc_tw_and_big5/big5.c',
+  ],
+  'latin2_and_win1250': ['latin2_and_win1250/latin2_and_win1250.c'],
+  'latin_and_mic': ['latin_and_mic/latin_and_mic.c'],
+  'utf8_and_big5': ['utf8_and_big5/utf8_and_big5.c'],
+  'utf8_and_cyrillic': ['utf8_and_cyrillic/utf8_and_cyrillic.c'],
+  'utf8_and_euc2004': ['utf8_and_euc2004/utf8_and_euc2004.c'],
+  'utf8_and_euc_cn': ['utf8_and_euc_cn/utf8_and_euc_cn.c'],
+  'utf8_and_euc_jp': ['utf8_and_euc_jp/utf8_and_euc_jp.c'],
+  'utf8_and_euc_kr': ['utf8_and_euc_kr/utf8_and_euc_kr.c'],
+  'utf8_and_euc_tw': ['utf8_and_euc_tw/utf8_and_euc_tw.c'],
+  'utf8_and_gb18030': ['utf8_and_gb18030/utf8_and_gb18030.c'],
+  'utf8_and_gbk': ['utf8_and_gbk/utf8_and_gbk.c'],
+  'utf8_and_iso8859': ['utf8_and_iso8859/utf8_and_iso8859.c'],
+  'utf8_and_iso8859_1': ['utf8_and_iso8859_1/utf8_and_iso8859_1.c'],
+  'utf8_and_johab': ['utf8_and_johab/utf8_and_johab.c'],
+  'utf8_and_sjis': ['utf8_and_sjis/utf8_and_sjis.c'],
+  'utf8_and_sjis2004': ['utf8_and_sjis2004/utf8_and_sjis2004.c'],
+  'utf8_and_uhc': ['utf8_and_uhc/utf8_and_uhc.c'],
+  'utf8_and_win': ['utf8_and_win/utf8_and_win.c'],
+}
+
+foreach encoding, sources : encodings
+  backend_targets += shared_module(encoding,
+    sources,
+    kwargs: pg_mod_args + {
+    }
+  )
+
+endforeach
diff --git a/src/backend/utils/mb/meson.build b/src/backend/utils/mb/meson.build
new file mode 100644
index 00000000000..39e45638db0
--- /dev/null
+++ b/src/backend/utils/mb/meson.build
@@ -0,0 +1,9 @@
+backend_sources += files(
+  'conv.c',
+  'mbutils.c',
+  'stringinfo_mb.c',
+  'wstrcmp.c',
+  'wstrncmp.c',
+)
+
+# Note we only enter conversion_procs once the backend build is defined
diff --git a/src/backend/utils/meson.build b/src/backend/utils/meson.build
new file mode 100644
index 00000000000..3a916320bb3
--- /dev/null
+++ b/src/backend/utils/meson.build
@@ -0,0 +1,17 @@
+install_data('errcodes.txt',
+  install_dir: dir_data,
+)
+
+subdir('activity')
+subdir('adt')
+subdir('cache')
+subdir('error')
+subdir('fmgr')
+subdir('hash')
+subdir('init')
+subdir('mb')
+subdir('misc')
+subdir('mmgr')
+subdir('resowner')
+subdir('sort')
+subdir('time')
diff --git a/src/backend/utils/misc/meson.build b/src/backend/utils/misc/meson.build
new file mode 100644
index 00000000000..2f886e407d5
--- /dev/null
+++ b/src/backend/utils/misc/meson.build
@@ -0,0 +1,32 @@
+backend_sources += files(
+  'guc.c',
+  'help_config.c',
+  'pg_config.c',
+  'pg_controldata.c',
+  'pg_rusage.c',
+  'ps_status.c',
+  'queryenvironment.c',
+  'queryjumble.c',
+  'rls.c',
+  'sampling.c',
+  'superuser.c',
+  'timeout.c',
+  'tzparser.c',
+)
+
+# guc-file.c is compiled as part of guc.c, generate guc-file.c.h so it can be
+# added as a dependency for the executable. Not pretty, but there's no
+# obviously better solution right now
+guc_scan = custom_target('guc_scan',
+  input: ['guc-file.l'],
+  output: ['guc-file.c', 'guc-file.c.h'],
+  command: [flex_cmd, '@INPUT@', '--stamp_header', '@OUTPUT1@'])
+
+backend_build_deps += declare_dependency(
+  sources: guc_scan[1],
+  include_directories: include_directories('.'))
+generated_backend_headers += guc_scan[1]
+
+install_data('postgresql.conf.sample',
+  install_dir: dir_data,
+)
diff --git a/src/backend/utils/mmgr/meson.build b/src/backend/utils/mmgr/meson.build
new file mode 100644
index 00000000000..641bb181ba1
--- /dev/null
+++ b/src/backend/utils/mmgr/meson.build
@@ -0,0 +1,10 @@
+backend_sources += files(
+  'aset.c',
+  'dsa.c',
+  'freepage.c',
+  'generation.c',
+  'mcxt.c',
+  'memdebug.c',
+  'portalmem.c',
+  'slab.c',
+)
diff --git a/src/backend/utils/resowner/meson.build b/src/backend/utils/resowner/meson.build
new file mode 100644
index 00000000000..d30891ca027
--- /dev/null
+++ b/src/backend/utils/resowner/meson.build
@@ -0,0 +1,3 @@
+backend_sources += files(
+  'resowner.c'
+)
diff --git a/src/backend/utils/sort/meson.build b/src/backend/utils/sort/meson.build
new file mode 100644
index 00000000000..5d5e5ba1194
--- /dev/null
+++ b/src/backend/utils/sort/meson.build
@@ -0,0 +1,8 @@
+backend_sources += files(
+  'logtape.c',
+  'sharedtuplestore.c',
+  'sortsupport.c',
+  'tuplesort.c',
+  'tuplestore.c',
+  'qsort_interruptible.c',
+)
diff --git a/src/backend/utils/time/meson.build b/src/backend/utils/time/meson.build
new file mode 100644
index 00000000000..6fff8792bb0
--- /dev/null
+++ b/src/backend/utils/time/meson.build
@@ -0,0 +1,4 @@
+backend_sources += files(
+  'combocid.c',
+  'snapmgr.c',
+)
diff --git a/src/fe_utils/meson.build b/src/fe_utils/meson.build
new file mode 100644
index 00000000000..01f060bb0da
--- /dev/null
+++ b/src/fe_utils/meson.build
@@ -0,0 +1,28 @@
+fe_utils_sources = files(
+  'archive.c',
+  'cancel.c',
+  'conditional.c',
+  'connect_utils.c',
+  'mbprint.c',
+  'option_utils.c',
+  'parallel_slot.c',
+  'print.c',
+  'query_utils.c',
+  'recovery_gen.c',
+  'simple_list.c',
+  'string_utils.c',
+)
+
+fe_utils_sources += custom_target('psqlscan',
+  input: ['psqlscan.l'],
+  output: ['psqlscan.c'],
+  command: [flex_cmd, flex_backup, flex_fix_warning, '-Cfe', '-p', '-p', '@INPUT@'],
+)
+
+fe_utils = static_library('pgfeutils',
+  fe_utils_sources + generated_headers,
+  c_pch: pch_c_h,
+  include_directories :  [postgres_inc, libpq_inc],
+  c_args: ['-DFRONTEND'],
+  kwargs: default_lib_args,
+)
diff --git a/src/bin/initdb/meson.build b/src/bin/initdb/meson.build
new file mode 100644
index 00000000000..131c416064f
--- /dev/null
+++ b/src/bin/initdb/meson.build
@@ -0,0 +1,39 @@
+initdb_sources = files(
+  'findtimezone.c',
+  'initdb.c'
+)
+
+initdb_sources += timezone_localtime_source
+
+#fixme: reimplement libpq_pgport logic
+
+if host_system == 'win32'
+  initdb_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'initdb - initialize a new database cluster',
+        '--NAME', 'initdb',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+executable('initdb',
+  initdb_sources,
+  include_directories: [timezone_inc],
+  dependencies: [frontend_code, libpq, icu, icu_i18n],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'initdb',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env' : {'with_icu': icu.found() ? 'yes' : 'no'},
+    'tests': [
+      't/001_initdb.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/initdb/po/meson.build b/src/bin/initdb/po/meson.build
new file mode 100644
index 00000000000..8b8a9fd2ce1
--- /dev/null
+++ b/src/bin/initdb/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('initdb-' + pg_version_major.to_string())
diff --git a/src/bin/meson.build b/src/bin/meson.build
new file mode 100644
index 00000000000..5fd5a9d2f98
--- /dev/null
+++ b/src/bin/meson.build
@@ -0,0 +1,20 @@
+subdir('initdb')
+subdir('pg_amcheck')
+subdir('pg_archivecleanup')
+subdir('pg_basebackup')
+subdir('pg_checksums')
+subdir('pg_config')
+subdir('pg_controldata')
+subdir('pg_ctl')
+subdir('pg_dump')
+subdir('pg_resetwal')
+subdir('pg_rewind')
+subdir('pg_test_fsync')
+subdir('pg_test_timing')
+subdir('pg_upgrade')
+subdir('pg_verifybackup')
+subdir('pg_waldump')
+subdir('pgbench')
+subdir('pgevent')
+subdir('psql')
+subdir('scripts')
diff --git a/src/bin/pg_amcheck/meson.build b/src/bin/pg_amcheck/meson.build
new file mode 100644
index 00000000000..3d130097615
--- /dev/null
+++ b/src/bin/pg_amcheck/meson.build
@@ -0,0 +1,26 @@
+pg_amcheck_sources = files(
+  'pg_amcheck.c'
+)
+
+pg_amcheck = executable('pg_amcheck',
+  pg_amcheck_sources,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_amcheck',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_nonesuch.pl',
+      't/003_check.pl',
+      't/004_verify_heapam.pl',
+      't/005_opclass_damage.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_amcheck/po/meson.build b/src/bin/pg_amcheck/po/meson.build
new file mode 100644
index 00000000000..b255f552c94
--- /dev/null
+++ b/src/bin/pg_amcheck/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_amcheck-' + pg_version_major.to_string())
diff --git a/src/bin/pg_archivecleanup/meson.build b/src/bin/pg_archivecleanup/meson.build
new file mode 100644
index 00000000000..b5d393b3b32
--- /dev/null
+++ b/src/bin/pg_archivecleanup/meson.build
@@ -0,0 +1,18 @@
+pg_archivecleanup = executable('pg_archivecleanup',
+  ['pg_archivecleanup.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_archivecleanup',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/010_pg_archivecleanup.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_archivecleanup/po/meson.build b/src/bin/pg_archivecleanup/po/meson.build
new file mode 100644
index 00000000000..37935fcabc4
--- /dev/null
+++ b/src/bin/pg_archivecleanup/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_archivecleanup-' + pg_version_major.to_string())
diff --git a/src/bin/pg_basebackup/meson.build b/src/bin/pg_basebackup/meson.build
new file mode 100644
index 00000000000..857e2b77d23
--- /dev/null
+++ b/src/bin/pg_basebackup/meson.build
@@ -0,0 +1,58 @@
+common_sources = files(
+  'bbstreamer_file.c',
+  'bbstreamer_gzip.c',
+  'bbstreamer_inject.c',
+  'bbstreamer_lz4.c',
+  'bbstreamer_tar.c',
+  'bbstreamer_zstd.c',
+  'receivelog.c',
+  'streamutil.c',
+  'walmethods.c',
+)
+
+pg_basebackup_deps = [frontend_code, libpq, lz4, zlib, zstd]
+pg_basebackup_common = static_library('libpg_basebackup_common',
+  common_sources,
+  dependencies: pg_basebackup_deps,
+  kwargs: internal_lib_args,
+)
+
+executable('pg_basebackup',
+  'pg_basebackup.c',
+  link_with: [pg_basebackup_common],
+  dependencies: pg_basebackup_deps,
+  kwargs: default_bin_args,
+)
+
+executable('pg_receivewal',
+  'pg_receivewal.c',
+  link_with: [pg_basebackup_common],
+  dependencies: pg_basebackup_deps,
+  kwargs: default_bin_args,
+)
+
+executable('pg_recvlogical',
+  'pg_recvlogical.c',
+  link_with: [pg_basebackup_common],
+  dependencies: pg_basebackup_deps,
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name' : 'pg_basebackup',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'GZIP_PROGRAM': gzip.path(),
+            'TAR': tar.path(),
+            'LZ4': program_lz4.found() ? program_lz4.path() : '',
+            'ZSTD': program_zstd.found() ? program_zstd.path() : ''},
+    'tests': [
+      't/010_pg_basebackup.pl',
+      't/020_pg_receivewal.pl',
+      't/030_pg_recvlogical.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_basebackup/po/meson.build b/src/bin/pg_basebackup/po/meson.build
new file mode 100644
index 00000000000..cab021153fe
--- /dev/null
+++ b/src/bin/pg_basebackup/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_basebackup-' + pg_version_major.to_string())
diff --git a/src/bin/pg_checksums/meson.build b/src/bin/pg_checksums/meson.build
new file mode 100644
index 00000000000..c58bcca2f97
--- /dev/null
+++ b/src/bin/pg_checksums/meson.build
@@ -0,0 +1,20 @@
+executable('pg_checksums',
+  ['pg_checksums.c'],
+  include_directories: [timezone_inc],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_checksums',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_actions.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_checksums/po/meson.build b/src/bin/pg_checksums/po/meson.build
new file mode 100644
index 00000000000..2c47c2338f6
--- /dev/null
+++ b/src/bin/pg_checksums/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_checksums-' + pg_version_major.to_string())
diff --git a/src/bin/pg_config/meson.build b/src/bin/pg_config/meson.build
new file mode 100644
index 00000000000..90664bb3bc3
--- /dev/null
+++ b/src/bin/pg_config/meson.build
@@ -0,0 +1,18 @@
+executable('pg_config',
+  ['pg_config.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_config',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_pg_config.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_config/po/meson.build b/src/bin/pg_config/po/meson.build
new file mode 100644
index 00000000000..b6fb6db9213
--- /dev/null
+++ b/src/bin/pg_config/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_config-' + pg_version_major.to_string())
diff --git a/src/bin/pg_controldata/meson.build b/src/bin/pg_controldata/meson.build
new file mode 100644
index 00000000000..969eed2888e
--- /dev/null
+++ b/src/bin/pg_controldata/meson.build
@@ -0,0 +1,18 @@
+executable('pg_controldata',
+  ['pg_controldata.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_controldata',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_pg_controldata.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_controldata/po/meson.build b/src/bin/pg_controldata/po/meson.build
new file mode 100644
index 00000000000..31b486d002c
--- /dev/null
+++ b/src/bin/pg_controldata/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_controldata-' + pg_version_major.to_string())
diff --git a/src/bin/pg_ctl/meson.build b/src/bin/pg_ctl/meson.build
new file mode 100644
index 00000000000..bbb30198d96
--- /dev/null
+++ b/src/bin/pg_ctl/meson.build
@@ -0,0 +1,21 @@
+executable('pg_ctl',
+  ['pg_ctl.c'],
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_ctl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_start_stop.pl',
+      't/002_status.pl',
+      't/003_promote.pl',
+      't/004_logrotate.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_ctl/po/meson.build b/src/bin/pg_ctl/po/meson.build
new file mode 100644
index 00000000000..947b5108423
--- /dev/null
+++ b/src/bin/pg_ctl/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_ctl-' + pg_version_major.to_string())
diff --git a/src/bin/pg_dump/meson.build b/src/bin/pg_dump/meson.build
new file mode 100644
index 00000000000..9dab205cbe9
--- /dev/null
+++ b/src/bin/pg_dump/meson.build
@@ -0,0 +1,84 @@
+pg_dump_common_sources = files(
+  'compress_io.c',
+  'dumputils.c',
+  'parallel.c',
+  'pg_backup_archiver.c',
+  'pg_backup_custom.c',
+  'pg_backup_db.c',
+  'pg_backup_directory.c',
+  'pg_backup_null.c',
+  'pg_backup_tar.c',
+  'pg_backup_utils.c',
+)
+
+if host_system == 'win32'
+  pg_dump_common_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'pg_dump/pg_restore/pg_dumpall - backup and restore PostgreSQL databases',
+        '--NAME', 'pg_dump',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+pg_dump_common = static_library('libpgdump_common',
+  pg_dump_common_sources,
+  c_pch: pch_c_h,
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: internal_lib_args,
+)
+
+
+pg_dump_sources = files(
+  'pg_dump.c',
+  'common.c',
+  'pg_dump_sort.c',
+)
+
+executable('pg_dump',
+  pg_dump_sources,
+  link_with: [pg_dump_common],
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: default_bin_args,
+)
+
+
+pg_dumpall_sources = files(
+  'pg_dumpall.c',
+)
+
+executable('pg_dumpall',
+  pg_dumpall_sources,
+  link_with: [pg_dump_common],
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: default_bin_args,
+)
+
+
+pg_restore_sources = files(
+  'pg_restore.c',
+)
+
+executable('pg_restore',
+  pg_restore_sources,
+  link_with: [pg_dump_common],
+  dependencies: [frontend_code, libpq, zlib],
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pg_dump',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_pg_dump.pl',
+      't/003_pg_dump_with_server.pl',
+      't/010_dump_connstr.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_dump/po/meson.build b/src/bin/pg_dump/po/meson.build
new file mode 100644
index 00000000000..82e5e537ff4
--- /dev/null
+++ b/src/bin/pg_dump/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_dump-' + pg_version_major.to_string())
diff --git a/src/bin/pg_resetwal/meson.build b/src/bin/pg_resetwal/meson.build
new file mode 100644
index 00000000000..dd889188b6d
--- /dev/null
+++ b/src/bin/pg_resetwal/meson.build
@@ -0,0 +1,19 @@
+executable('pg_resetwal',
+  files('pg_resetwal.c'),
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_resetwal',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_corrupted.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_resetwal/po/meson.build b/src/bin/pg_resetwal/po/meson.build
new file mode 100644
index 00000000000..d130d3b775f
--- /dev/null
+++ b/src/bin/pg_resetwal/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_resetwal-' + pg_version_major.to_string())
diff --git a/src/bin/pg_rewind/meson.build b/src/bin/pg_rewind/meson.build
new file mode 100644
index 00000000000..40ae593e7c8
--- /dev/null
+++ b/src/bin/pg_rewind/meson.build
@@ -0,0 +1,39 @@
+pg_rewind_sources = files(
+  'datapagemap.c',
+  'file_ops.c',
+  'filemap.c',
+  'libpq_source.c',
+  'local_source.c',
+  'parsexlog.c',
+  'pg_rewind.c',
+  'timeline.c',
+  '../../backend/access/transam/xlogreader.c',
+)
+
+pg_rewind = executable('pg_rewind',
+  pg_rewind_sources,
+  dependencies: [frontend_code, libpq, lz4, zstd],
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pg_rewind',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_databases.pl',
+      't/003_extrafiles.pl',
+      't/004_pg_xlog_symlink.pl',
+      't/005_same_timeline.pl',
+      't/006_options.pl',
+      't/007_standby_source.pl',
+      't/008_min_recovery_point.pl',
+      't/009_growing_files.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_rewind/po/meson.build b/src/bin/pg_rewind/po/meson.build
new file mode 100644
index 00000000000..a105600b348
--- /dev/null
+++ b/src/bin/pg_rewind/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_rewind-' + pg_version_major.to_string())
diff --git a/src/bin/pg_test_fsync/meson.build b/src/bin/pg_test_fsync/meson.build
new file mode 100644
index 00000000000..d51f99902cf
--- /dev/null
+++ b/src/bin/pg_test_fsync/meson.build
@@ -0,0 +1,18 @@
+executable('pg_test_fsync',
+  ['pg_test_fsync.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name' : 'pg_test_fsync',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests' :[
+      't/001_basic.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_test_fsync/po/meson.build b/src/bin/pg_test_fsync/po/meson.build
new file mode 100644
index 00000000000..2ee1125282d
--- /dev/null
+++ b/src/bin/pg_test_fsync/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_test_fsync-' + pg_version_major.to_string())
diff --git a/src/bin/pg_test_timing/meson.build b/src/bin/pg_test_timing/meson.build
new file mode 100644
index 00000000000..409fe242353
--- /dev/null
+++ b/src/bin/pg_test_timing/meson.build
@@ -0,0 +1,18 @@
+pg_test_timing = executable('pg_test_timing',
+  ['pg_test_timing.c'],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_test_timing',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_test_timing/po/meson.build b/src/bin/pg_test_timing/po/meson.build
new file mode 100644
index 00000000000..cda8615165b
--- /dev/null
+++ b/src/bin/pg_test_timing/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_test_timing-' + pg_version_major.to_string())
diff --git a/src/bin/pg_upgrade/meson.build b/src/bin/pg_upgrade/meson.build
new file mode 100644
index 00000000000..fb7eff3055b
--- /dev/null
+++ b/src/bin/pg_upgrade/meson.build
@@ -0,0 +1,40 @@
+pg_upgrade_sources = files(
+  'check.c',
+  'controldata.c',
+  'dump.c',
+  'exec.c',
+  'file.c',
+  'function.c',
+  'info.c',
+  'option.c',
+  'parallel.c',
+  'pg_upgrade.c',
+  'relfilenumber.c',
+  'server.c',
+  'tablespace.c',
+  'util.c',
+  'version.c',
+)
+
+pg_upgrade = executable('pg_upgrade',
+  pg_upgrade_sources,
+  c_pch: pch_c_h,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name': 'pg_upgrade',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_pg_upgrade.pl',
+    ],
+    'test_kwargs': {'priority': 40}, # pg_upgrade tests are slow
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_upgrade/po/meson.build b/src/bin/pg_upgrade/po/meson.build
new file mode 100644
index 00000000000..39301cbede8
--- /dev/null
+++ b/src/bin/pg_upgrade/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_upgrade-' + pg_version_major.to_string())
diff --git a/src/bin/pg_verifybackup/meson.build b/src/bin/pg_verifybackup/meson.build
new file mode 100644
index 00000000000..307ca23ee73
--- /dev/null
+++ b/src/bin/pg_verifybackup/meson.build
@@ -0,0 +1,32 @@
+pg_verifybackup_sources = files(
+  'parse_manifest.c',
+  'pg_verifybackup.c'
+)
+
+pg_verifybackup = executable('pg_verifybackup',
+  pg_verifybackup_sources,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_verifybackup',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+      't/002_algorithm.pl',
+      't/003_corruption.pl',
+      't/004_options.pl',
+      't/005_bad_manifest.pl',
+      't/006_encoding.pl',
+      't/007_wal.pl',
+      't/008_untar.pl',
+      't/009_extract.pl',
+      't/010_client_untar.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_verifybackup/po/meson.build b/src/bin/pg_verifybackup/po/meson.build
new file mode 100644
index 00000000000..b583f1958ba
--- /dev/null
+++ b/src/bin/pg_verifybackup/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_verifybackup-' + pg_version_major.to_string())
diff --git a/src/bin/pg_waldump/meson.build b/src/bin/pg_waldump/meson.build
new file mode 100644
index 00000000000..e4820062640
--- /dev/null
+++ b/src/bin/pg_waldump/meson.build
@@ -0,0 +1,28 @@
+pg_waldump_sources = files(
+  'compat.c',
+  'pg_waldump.c',
+  'rmgrdesc.c',
+)
+
+pg_waldump_sources += rmgr_desc_sources
+pg_waldump_sources += xlogreader_sources
+pg_waldump_sources += files('../../backend/access/transam/xlogstats.c')
+
+pg_waldump = executable('pg_waldump',
+  pg_waldump_sources,
+  dependencies: [frontend_code, lz4, zstd],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name': 'pg_waldump',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_basic.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/pg_waldump/po/meson.build b/src/bin/pg_waldump/po/meson.build
new file mode 100644
index 00000000000..f335aa4b360
--- /dev/null
+++ b/src/bin/pg_waldump/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pg_waldump-' + pg_version_major.to_string())
diff --git a/src/bin/pgbench/meson.build b/src/bin/pgbench/meson.build
new file mode 100644
index 00000000000..f15d3d37700
--- /dev/null
+++ b/src/bin/pgbench/meson.build
@@ -0,0 +1,40 @@
+pgbench_sources = files(
+  'pgbench.c',
+)
+
+# exprscan is compiled as part ofexprparse. The ordering is enforced by making
+# the generation of grammar depend on the scanner generation. That's
+# unnecessarily strict, but overall harmless.
+
+exprscan = custom_target('exprscan',
+  input : files('exprscan.l'),
+  output : ['exprscan.c'],
+  command : [flex_cmd, '@INPUT@']
+)
+
+exprparse = custom_target('exprparse',
+  input: 'exprparse.y',
+  output: 'exprparse.c',
+  depends: exprscan,
+  command: [bison_cmd, '@INPUT@'],)
+pgbench_sources += exprparse
+
+executable('pgbench',
+  pgbench_sources,
+  dependencies: [frontend_code, libpq, thread_dep],
+  include_directories: include_directories('.'),
+  kwargs: default_bin_args,
+)
+
+
+tests += {
+  'name' : 'pgbench',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests' :[
+      't/001_pgbench_with_server.pl',
+      't/002_pgbench_no_server.pl',
+    ],
+  },
+}
diff --git a/src/bin/pgevent/meson.build b/src/bin/pgevent/meson.build
new file mode 100644
index 00000000000..e49a5fa0434
--- /dev/null
+++ b/src/bin/pgevent/meson.build
@@ -0,0 +1,31 @@
+if host_system != 'win32'
+  subdir_done()
+endif
+
+pgevent_sources = files(
+    'pgevent.c',
+)
+
+# built as part of pgmsgevent.rc, via #include
+win32ver_rc = custom_target(
+  'win32ver.rc',
+  kwargs: rcgen_kw,
+  command: rcgen_lib_cmd + [
+    '--FILEDESC', 'Eventlog message formatter',
+    '--NAME', 'pgevent',],
+)
+
+pgevent_sources += windows.compile_resources(
+  'pgmsgevent.rc',
+  depends: win32ver_rc, # included in file
+  kwargs: rccompile_kw,
+)
+
+shared_library('pgevent',
+  pgevent_sources,
+  dependencies: [frontend_code],
+  vs_module_defs: 'pgevent.def',
+  kwargs: default_lib_args + {
+    'name_prefix': '',
+  },
+)
diff --git a/src/bin/psql/meson.build b/src/bin/psql/meson.build
new file mode 100644
index 00000000000..7353d42dce2
--- /dev/null
+++ b/src/bin/psql/meson.build
@@ -0,0 +1,68 @@
+psql_sources = files(
+  'command.c',
+  'common.c',
+  'copy.c',
+  'crosstabview.c',
+  'describe.c',
+  'help.c',
+  'input.c',
+  'large_obj.c',
+  'mainloop.c',
+  'prompt.c',
+  'startup.c',
+  'stringutils.c',
+  'tab-complete.c',
+  'variables.c',
+)
+
+psql_sources += custom_target('psqlscanslash',
+  input: ['psqlscanslash.l'],
+  output: ['psqlscanslash.c'],
+  command: [flex_cmd, flex_backup, flex_fix_warning, '-Cfe', '-p', '-p', '@INPUT@'])
+
+psql_sources += custom_target('psql_help',
+  output: ['sql_help.c', 'sql_help.h'],
+  depfile: 'sql_help.dep',
+  command: [perl, files('create_help.pl'),
+            '--docdir', '@SOURCE_ROOT@/doc/src/sgml/ref',
+            '--depfile', '@DEPFILE@',
+            '--outdir', '@OUTDIR@',
+            '--basename', 'sql_help'])
+
+if host_system == 'win32'
+  psql_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'psql - the PostgreSQL interactive terminal',
+        '--NAME', 'psql',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+executable('psql',
+  psql_sources,
+  c_pch: pch_c_h,
+  include_directories: include_directories('.'),
+  dependencies : [frontend_code, libpq, readline],
+  kwargs: default_bin_args,
+)
+
+install_data('psqlrc.sample',
+  install_dir: dir_data,
+)
+
+tests += {
+  'name': 'psql',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env': {'with_readline': readline.found() ? 'yes' : 'no'},
+    'tests': [
+      't/001_basic.pl',
+      't/010_tab_completion.pl',
+      't/020_cancel.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/psql/po/meson.build b/src/bin/psql/po/meson.build
new file mode 100644
index 00000000000..45fe425298d
--- /dev/null
+++ b/src/bin/psql/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('psql-' + pg_version_major.to_string())
diff --git a/src/bin/scripts/meson.build b/src/bin/scripts/meson.build
new file mode 100644
index 00000000000..d6826817f3d
--- /dev/null
+++ b/src/bin/scripts/meson.build
@@ -0,0 +1,50 @@
+scripts_common = static_library('libscripts_common',
+  files('common.c'),
+  dependencies: [frontend_code, libpq],
+  kwargs: internal_lib_args,
+)
+
+binaries = [
+  'createdb',
+  'dropdb',
+  'createuser',
+  'dropuser',
+  'clusterdb',
+  'vacuumdb',
+  'reindexdb',
+  'pg_isready',
+]
+
+foreach binary : binaries
+  executable(binary,
+    files(binary + '.c'),
+    link_with: [scripts_common],
+    dependencies: [frontend_code, libpq],
+    kwargs: default_bin_args,
+  )
+endforeach
+
+tests += {
+  'name': 'scripts',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/010_clusterdb.pl',
+      't/011_clusterdb_all.pl',
+      't/020_createdb.pl',
+      't/040_createuser.pl',
+      't/050_dropdb.pl',
+      't/070_dropuser.pl',
+      't/080_pg_isready.pl',
+      't/090_reindexdb.pl',
+      't/091_reindexdb_all.pl',
+      't/100_vacuumdb.pl',
+      't/101_vacuumdb_all.pl',
+      't/102_vacuumdb_stages.pl',
+      't/200_connstr.pl',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/bin/scripts/po/meson.build b/src/bin/scripts/po/meson.build
new file mode 100644
index 00000000000..3c531459c2d
--- /dev/null
+++ b/src/bin/scripts/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pgscripts-' + pg_version_major.to_string())
diff --git a/src/interfaces/libpq/meson.build b/src/interfaces/libpq/meson.build
new file mode 100644
index 00000000000..e726584db3c
--- /dev/null
+++ b/src/interfaces/libpq/meson.build
@@ -0,0 +1,141 @@
+# test/ is entered via top-level meson.build, that way it can use the default
+# args for executables (which depend on libpq).
+
+libpq_sources = files(
+  'fe-auth-scram.c',
+  'fe-connect.c',
+  'fe-exec.c',
+  'fe-lobj.c',
+  'fe-misc.c',
+  'fe-print.c',
+  'fe-protocol3.c',
+  'fe-secure.c',
+  'fe-trace.c',
+  'legacy-pqsignal.c',
+  'libpq-events.c',
+  'pqexpbuffer.c',
+  'fe-auth.c',
+)
+
+if host_system == 'win32'
+  libpq_sources += files('win32.c', 'pthread-win32.c')
+endif
+
+if ssl.found()
+  libpq_sources += files('fe-secure-common.c')
+  libpq_sources += files('fe-secure-openssl.c')
+endif
+
+if gssapi.found()
+  libpq_sources += files(
+    'fe-secure-gssapi.c',
+    'fe-gssapi-common.c'
+  )
+endif
+
+export_file = custom_target('libpq_exports.list',
+  input: [files('exports.txt')],
+  output: ['@BASENAME@.list'],
+  command: [perl, files('../../tools/gen_versioning_script.pl'),
+    export_file_format,
+    '@INPUT0@', '@OUTPUT0@'],
+  build_by_default: false,
+  install: false,
+)
+
+libpq_def = custom_target('libpq.def',
+  command: [perl, files('../../tools/msvc/export2def.pl'), '@OUTPUT@', '@INPUT0@', 'libpq'],
+  input: files('exports.txt'),
+  output: 'libpq.def',
+  build_by_default: false,
+  install: false,
+)
+
+# port needs to be in include path due to pthread-win32.h
+libpq_inc = include_directories('.', '../../port')
+libpq_link_depends = []
+
+libpq_kwargs = default_lib_args + {
+  'version': '5.'+pg_version_major.to_string(),
+}
+
+
+if host_system == 'aix'
+  libpq_kwargs = libpq_kwargs + {
+    'link_args': ['-Wl,-bE:' + export_file.full_path()],
+    'link_depends': export_file,
+    'soversion': '5',
+  }
+elif host_system == 'darwin'
+  libpq_kwargs = libpq_kwargs + {
+    'link_args': ['-exported_symbols_list', export_file.full_path()],
+    'link_depends': export_file,
+    'soversion': '5',
+  }
+elif host_system == 'win32'
+  libpq_deps += cc.find_library('secur32', required: true)
+
+  libpq_kwargs = libpq_kwargs + {
+    'vs_module_defs': libpq_def,
+    'soversion': '',
+  }
+else
+  libpq_kwargs = libpq_kwargs + {
+    'link_args': '-Wl,--version-script=' + export_file.full_path(),
+    'link_depends': export_file,
+    'soversion': '5',
+  }
+endif
+
+libpq_both = both_libraries('libpq',
+  libpq_sources,
+  include_directories : [libpq_inc, postgres_inc],
+  c_args: ['-DFRONTEND'],
+  dependencies: libpq_deps,
+  kwargs: libpq_kwargs,
+)
+
+libpq_so = libpq_both.get_shared_lib()
+
+libpq = declare_dependency(
+  link_with: [libpq_so],
+  include_directories: [include_directories('.')]
+)
+
+pkgconfig.generate(
+  libpq_so,
+  name: 'libpq',
+  description: 'PostgreSQL libpq library',
+  url: pg_url,
+)
+
+install_headers(
+  'libpq-fe.h',
+  'libpq-events.h',
+)
+
+install_headers(
+  'libpq-int.h',
+  'pqexpbuffer.h',
+  'fe-auth-sasl.h',
+  install_dir: dir_include_internal,
+)
+install_data('pg_service.conf.sample',
+  install_dir: dir_data,
+)
+
+
+tests += {
+  'name': 'libpq',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_uri.pl',
+      't/002_api.pl',
+    ],
+    'env' : {'with_ssl': get_option('ssl')},
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/interfaces/libpq/po/meson.build b/src/interfaces/libpq/po/meson.build
new file mode 100644
index 00000000000..eed91110fd6
--- /dev/null
+++ b/src/interfaces/libpq/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('libpq' + '5' + '-' + pg_version_major.to_string())
diff --git a/src/interfaces/libpq/test/meson.build b/src/interfaces/libpq/test/meson.build
new file mode 100644
index 00000000000..16f94c1ed8b
--- /dev/null
+++ b/src/interfaces/libpq/test/meson.build
@@ -0,0 +1,15 @@
+executable('libpq_uri_regress',
+  files('libpq_uri_regress.c'),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install': false,
+  }
+)
+
+executable('libpq_testclient',
+  files('libpq_testclient.c'),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install': false,
+  }
+)
diff --git a/src/pl/meson.build b/src/pl/meson.build
new file mode 100644
index 00000000000..d9a57465441
--- /dev/null
+++ b/src/pl/meson.build
@@ -0,0 +1,5 @@
+subdir('plpgsql')
+
+subdir('plperl')
+subdir('plpython')
+subdir('tcl')
diff --git a/src/pl/plperl/meson.build b/src/pl/plperl/meson.build
new file mode 100644
index 00000000000..4b14c556c24
--- /dev/null
+++ b/src/pl/plperl/meson.build
@@ -0,0 +1,92 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+plperl_sources = files(
+  'plperl.c',
+)
+
+subppdir = run_command(perl, '-e', 'use List::Util qw(first); print first { -r "$_/ExtUtils/xsubpp" } @INC',
+  check: true).stdout()
+xsubpp = '@0@/ExtUtils/xsubpp'.format(subppdir)
+typemap = '@0@/ExtUtils/typemap'.format(privlibexp)
+
+plperl_sources += custom_target('perlchunks.h',
+  input: files('plc_perlboot.pl', 'plc_trusted.pl'),
+  output: 'perlchunks.h',
+  capture: true,
+  command: [perl, files('text2macro.pl'), '--strip=^(\#.*|\s*)$', '@INPUT@']
+)
+
+plperl_sources += custom_target('plperl_opmask.h',
+  input: files('plperl_opmask.pl'),
+  output: 'plperl_opmask.h',
+  command: [perl, '@INPUT@', '@OUTPUT@']
+)
+
+foreach n : ['SPI', 'Util']
+  xs = files(n+'.xs')
+  xs_c_name = n+'.c'
+
+  # FIXME: -output option is only available in perl 5.9.3 - but that's
+  # probably a fine minimum requirement?
+  xs_c = custom_target(xs_c_name,
+    input: xs,
+    output: xs_c_name,
+    command: [perl, xsubpp, '-typemap', typemap, '-output', '@OUTPUT@', '@INPUT@']
+  )
+  plperl_sources += xs_c
+endforeach
+
+plperl_inc = include_directories('.')
+shared_module('plperl',
+  plperl_sources,
+  c_pch: pch_postgres_h,
+  include_directories: [plperl_inc, postgres_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [perl_dep, pg_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'plperl.control',
+  'plperl--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_data(
+  'plperlu.control',
+  'plperlu--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_headers(
+  'plperl.h',
+  'plperl_helpers.h',
+  'ppport.h',
+  install_dir: dir_include_server,
+)
+
+tests += {
+  'name': 'plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'plperl_setup',
+      'plperl',
+      'plperl_lc',
+      'plperl_trigger',
+      'plperl_shared',
+      'plperl_elog',
+      'plperl_util',
+      'plperl_init',
+      'plperlu',
+      'plperl_array',
+      'plperl_call',
+      'plperl_transaction',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/plperl/po/meson.build b/src/pl/plperl/po/meson.build
new file mode 100644
index 00000000000..fe0a715bdf0
--- /dev/null
+++ b/src/pl/plperl/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('plperl-' + pg_version_major.to_string())
diff --git a/src/pl/plpgsql/meson.build b/src/pl/plpgsql/meson.build
new file mode 100644
index 00000000000..9537275d67c
--- /dev/null
+++ b/src/pl/plpgsql/meson.build
@@ -0,0 +1 @@
+subdir('src')
diff --git a/src/pl/plpgsql/src/meson.build b/src/pl/plpgsql/src/meson.build
new file mode 100644
index 00000000000..7c0e29cac67
--- /dev/null
+++ b/src/pl/plpgsql/src/meson.build
@@ -0,0 +1,75 @@
+plpgsql_sources = files(
+  'pl_comp.c',
+  'pl_exec.c',
+  'pl_funcs.c',
+  'pl_handler.c',
+  'pl_scanner.c',
+)
+
+plpgsql_sources += custom_target('gram',
+  input: ['pl_gram.y'],
+  output: ['pl_gram.c', 'pl_gram.h'],
+  command: [bison_cmd, '-d', '@INPUT@'])
+
+gen_plerrcodes = files('generate-plerrcodes.pl')
+plpgsql_sources += custom_target('plerrcodes',
+  input: ['../../../../src/backend/utils/errcodes.txt'],
+  output: ['plerrcodes.h'],
+  command: [perl, gen_plerrcodes, '@INPUT0@'],
+  capture: true)
+
+gen_keywordlist = files('../../../../src/tools/gen_keywordlist.pl')
+plpgsql_sources += custom_target('pl_reserved_kwlist',
+  input: ['pl_reserved_kwlist.h'],
+  output: ['pl_reserved_kwlist_d.h'],
+  command: [perl, '-I', '@SOURCE_ROOT@/src/tools', gen_keywordlist, '--output', '@OUTDIR@', '--varname', 'ReservedPLKeywords', '@INPUT@']
+)
+
+plpgsql_sources += custom_target('pl_unreserved_kwlist',
+  input: ['pl_unreserved_kwlist.h'],
+  output: ['pl_unreserved_kwlist_d.h'],
+  command: [perl, '-I', '@SOURCE_ROOT@/src/tools', gen_keywordlist, '--output', '@OUTDIR@', '--varname', 'UnreservedPLKeywords', '@INPUT@']
+)
+
+shared_module('plpgsql',
+  plpgsql_sources,
+  c_pch: pch_postgres_h,
+  include_directories: include_directories('.'),
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'plpgsql.control',
+  'plpgsql--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_headers(
+  'plpgsql.h',
+  install_dir: dir_include_server
+)
+
+
+tests += {
+  'name': 'plpgsql',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'plpgsql_array',
+      'plpgsql_call',
+      'plpgsql_control',
+      'plpgsql_copy',
+      'plpgsql_domain',
+      'plpgsql_record',
+      'plpgsql_cache',
+      'plpgsql_simple',
+      'plpgsql_transaction',
+      'plpgsql_trap',
+      'plpgsql_trigger',
+      'plpgsql_varprops',
+    ],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/plpgsql/src/po/meson.build b/src/pl/plpgsql/src/po/meson.build
new file mode 100644
index 00000000000..29e0b74488f
--- /dev/null
+++ b/src/pl/plpgsql/src/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('plpgsql-' + pg_version_major.to_string())
diff --git a/src/pl/plpython/meson.build b/src/pl/plpython/meson.build
new file mode 100644
index 00000000000..449654914d0
--- /dev/null
+++ b/src/pl/plpython/meson.build
@@ -0,0 +1,99 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+plpython_sources = files(
+  'plpy_cursorobject.c',
+  'plpy_elog.c',
+  'plpy_exec.c',
+  'plpy_main.c',
+  'plpy_planobject.c',
+  'plpy_plpymodule.c',
+  'plpy_procedure.c',
+  'plpy_resultobject.c',
+  'plpy_spi.c',
+  'plpy_subxactobject.c',
+  'plpy_typeio.c',
+  'plpy_util.c',
+)
+
+plpython_sources += custom_target('spiexceptions.h',
+    input: files('../../backend/utils/errcodes.txt'),
+    output: 'spiexceptions.h',
+    command: [perl, files('generate-spiexceptions.pl'), '@INPUT@'],
+    capture: true
+  )
+
+
+# FIXME: need to duplicate import library ugliness?
+plpython_inc = include_directories('.')
+
+shared_module('plpython3',
+  plpython_sources,
+  c_pch: pch_postgres_h,
+  include_directories: [plpython_inc, postgres_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [python3_dep, pg_mod_args['dependencies']],
+  },
+)
+
+# FIXME: Only install the relevant versions
+install_data(
+  'plpython3u.control',
+  'plpython3u--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+install_headers(
+  'plpy_cursorobject.h',
+  'plpy_elog.h',
+  'plpy_exec.h',
+  'plpy_main.h',
+  'plpy_planobject.h',
+  'plpy_plpymodule.h',
+  'plpy_procedure.h',
+  'plpy_resultobject.h',
+  'plpy_spi.h',
+  'plpy_subxactobject.h',
+  'plpy_typeio.h',
+  'plpy_util.h',
+  'plpython.h',
+  install_dir: dir_include_server,
+)
+
+plpython_regress = [
+  'plpython_schema',
+  'plpython_populate',
+  'plpython_test',
+  'plpython_do',
+  'plpython_global',
+  'plpython_import',
+  'plpython_spi',
+  'plpython_newline',
+  'plpython_void',
+  'plpython_call',
+  'plpython_params',
+  'plpython_setof',
+  'plpython_record',
+  'plpython_trigger',
+  'plpython_types',
+  'plpython_error',
+  'plpython_ereport',
+  'plpython_unicode',
+  'plpython_quote',
+  'plpython_composite',
+  'plpython_subtransaction',
+  'plpython_transaction',
+  'plpython_drop',
+]
+
+tests += {
+  'name': 'plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': plpython_regress,
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/plpython/po/meson.build b/src/pl/plpython/po/meson.build
new file mode 100644
index 00000000000..542e27fbe1f
--- /dev/null
+++ b/src/pl/plpython/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('plpython-' + pg_version_major.to_string())
diff --git a/src/pl/tcl/meson.build b/src/pl/tcl/meson.build
new file mode 100644
index 00000000000..16bfd7806b4
--- /dev/null
+++ b/src/pl/tcl/meson.build
@@ -0,0 +1,55 @@
+if not tcl_dep.found()
+  subdir_done()
+endif
+
+pltcl_sources = files(
+  'pltcl.c',
+)
+
+gen_pltclerrcodes = files('generate-pltclerrcodes.pl')
+pltcl_sources += custom_target('pltclerrcodes.h',
+  input: files('../../backend/utils/errcodes.txt'),
+  output: 'pltclerrcodes.h',
+  capture: true,
+  command: [perl, gen_pltclerrcodes, '@INPUT@']
+)
+
+shared_module('pltcl',
+  pltcl_sources,
+  c_pch: pch_postgres_h,
+  include_directories: [include_directories('.'), postgres_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [tcl_dep, pg_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'pltcl.control',
+  'pltcl--1.0.sql',
+  'pltclu.control',
+  'pltclu--1.0.sql',
+  install_dir: dir_data_extension,
+)
+
+pltcl_regress = [
+  'pltcl_setup',
+  'pltcl_queries',
+  'pltcl_trigger',
+  'pltcl_call',
+  'pltcl_start_proc',
+  'pltcl_subxact',
+  'pltcl_unicode',
+  'pltcl_transaction',
+]
+
+tests += {
+  'name': 'pltcl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': pltcl_regress,
+    'regress_args': ['--load-extension=pltcl'],
+  },
+}
+
+subdir('po', if_found: libintl)
diff --git a/src/pl/tcl/po/meson.build b/src/pl/tcl/po/meson.build
new file mode 100644
index 00000000000..cc23ef1eb3b
--- /dev/null
+++ b/src/pl/tcl/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('pltcl-' + pg_version_major.to_string())
diff --git a/contrib/adminpack/meson.build b/contrib/adminpack/meson.build
new file mode 100644
index 00000000000..c522738a3b7
--- /dev/null
+++ b/contrib/adminpack/meson.build
@@ -0,0 +1,22 @@
+autoinc = shared_module('adminpack',
+  ['adminpack.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'adminpack.control',
+  'adminpack--1.0.sql',
+  'adminpack--1.0--1.1.sql',
+  'adminpack--1.1--2.0.sql',
+  'adminpack--2.0--2.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'adminpack',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': ['adminpack'],
+  },
+}
diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
new file mode 100644
index 00000000000..d75d8c91c4b
--- /dev/null
+++ b/contrib/amcheck/meson.build
@@ -0,0 +1,36 @@
+amcheck = shared_module('amcheck', [
+    'verify_heapam.c',
+    'verify_nbtree.c',
+  ],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'amcheck.control',
+  'amcheck--1.0.sql',
+  'amcheck--1.0--1.1.sql',
+  'amcheck--1.1--1.2.sql',
+  'amcheck--1.2--1.3.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'amcheck',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'check',
+      'check_btree',
+      'check_heap',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_verify_heapam.pl',
+      't/002_cic.pl',
+      't/003_cic_2pc.pl',
+    ],
+  },
+}
+
diff --git a/contrib/auth_delay/meson.build b/contrib/auth_delay/meson.build
new file mode 100644
index 00000000000..941bb6f39a4
--- /dev/null
+++ b/contrib/auth_delay/meson.build
@@ -0,0 +1,4 @@
+autoinc = shared_module('auth_delay',
+  ['auth_delay.c'],
+  kwargs: contrib_mod_args,
+)
diff --git a/contrib/auto_explain/meson.build b/contrib/auto_explain/meson.build
new file mode 100644
index 00000000000..9456d569fc2
--- /dev/null
+++ b/contrib/auto_explain/meson.build
@@ -0,0 +1,15 @@
+auto_explain = shared_module('auto_explain',
+  files('auto_explain.c'),
+  kwargs: contrib_mod_args,
+)
+
+tests += {
+  'name': 'auto_explain',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_auto_explain.pl',
+    ],
+  },
+}
diff --git a/contrib/basebackup_to_shell/meson.build b/contrib/basebackup_to_shell/meson.build
new file mode 100644
index 00000000000..9d465cb50f3
--- /dev/null
+++ b/contrib/basebackup_to_shell/meson.build
@@ -0,0 +1,22 @@
+basebackup_to_shell_sources = files(
+  'basebackup_to_shell.c',
+)
+
+basebackup_to_shell = shared_module('basebackup_to_shell',
+  basebackup_to_shell_sources,
+  kwargs: contrib_mod_args,
+)
+
+
+tests += {
+  'name': 'basebackup_to_shell',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap' : {
+    'tests': [
+      't/001_basic.pl',
+    ],
+    'env': {'GZIP_PROGRAM': gzip.path(),
+            'TAR': tar.path()},
+  },
+}
diff --git a/contrib/basic_archive/meson.build b/contrib/basic_archive/meson.build
new file mode 100644
index 00000000000..b81582c7c0f
--- /dev/null
+++ b/contrib/basic_archive/meson.build
@@ -0,0 +1,23 @@
+basic_archive_sources = files(
+  'basic_archive.c',
+)
+
+basic_archive = shared_module('basic_archive',
+  basic_archive_sources,
+  kwargs: contrib_mod_args,
+)
+
+
+tests += {
+  'name': 'basic_archive',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'basic_archive',
+    ],
+    'regress_args': [
+      '--temp-config', files('basic_archive.conf'),
+    ],
+  },
+}
diff --git a/contrib/bloom/meson.build b/contrib/bloom/meson.build
new file mode 100644
index 00000000000..71a2263a773
--- /dev/null
+++ b/contrib/bloom/meson.build
@@ -0,0 +1,36 @@
+bloom_sources = files(
+  'blcost.c',
+  'blinsert.c',
+  'blscan.c',
+  'blutils.c',
+  'blvacuum.c',
+  'blvalidate.c',
+)
+
+bloom = shared_module('bloom',
+  bloom_sources,
+  c_pch: pch_c_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'bloom.control',
+  'bloom--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'bloom',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'bloom',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_wal.pl',
+    ],
+  },
+}
diff --git a/contrib/bool_plperl/meson.build b/contrib/bool_plperl/meson.build
new file mode 100644
index 00000000000..c7e75278739
--- /dev/null
+++ b/contrib/bool_plperl/meson.build
@@ -0,0 +1,39 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+bool_plperl_sources = files(
+  'bool_plperl.c',
+)
+
+bool_plperl = shared_module('bool_plperl',
+  bool_plperl_sources,
+  include_directories: [plperl_inc, include_directories('.')],
+  kwargs: pg_mod_args + {
+    'dependencies': [perl_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'bool_plperl.control',
+  'bool_plperl--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'bool_plperlu.control',
+  'bool_plperlu--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'bool_plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'bool_plperl',
+      'bool_plperlu',
+    ],
+  },
+}
diff --git a/contrib/btree_gin/meson.build b/contrib/btree_gin/meson.build
new file mode 100644
index 00000000000..356dbe84f10
--- /dev/null
+++ b/contrib/btree_gin/meson.build
@@ -0,0 +1,53 @@
+btree_gin = shared_module('btree_gin',
+  files('btree_gin.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'btree_gin.control',
+  'btree_gin--1.0.sql',
+  'btree_gin--1.0--1.1.sql',
+  'btree_gin--1.1--1.2.sql',
+  'btree_gin--1.2--1.3.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'btree_gin',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'install_btree_gin',
+      'int2',
+      'int4',
+      'int8',
+      'float4',
+      'float8',
+      'money',
+      'oid',
+      'timestamp',
+      'timestamptz',
+      'time',
+      'timetz',
+      'date',
+      'interval',
+      'macaddr',
+      'macaddr8',
+      'inet',
+      'cidr',
+      'text',
+      'varchar',
+      'char',
+      'bytea',
+      'bit',
+      'varbit',
+      'numeric',
+      'enum',
+      'uuid',
+      'name',
+      'bool',
+      'bpchar',
+    ],
+  },
+}
diff --git a/contrib/btree_gist/meson.build b/contrib/btree_gist/meson.build
new file mode 100644
index 00000000000..40b6ccc3b50
--- /dev/null
+++ b/contrib/btree_gist/meson.build
@@ -0,0 +1,84 @@
+btree_gist_sources = files(
+  'btree_bit.c',
+  'btree_bool.c',
+  'btree_bytea.c',
+  'btree_cash.c',
+  'btree_date.c',
+  'btree_enum.c',
+  'btree_float4.c',
+  'btree_float8.c',
+  'btree_gist.c',
+  'btree_inet.c',
+  'btree_int2.c',
+  'btree_int4.c',
+  'btree_int8.c',
+  'btree_interval.c',
+  'btree_macaddr.c',
+  'btree_macaddr8.c',
+  'btree_numeric.c',
+  'btree_oid.c',
+  'btree_text.c',
+  'btree_time.c',
+  'btree_ts.c',
+  'btree_utils_num.c',
+  'btree_utils_var.c',
+  'btree_uuid.c',
+)
+
+btree_gist = shared_module('btree_gist',
+  btree_gist_sources,
+  c_pch: pch_c_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'btree_gist.control',
+  'btree_gist--1.0--1.1.sql',
+  'btree_gist--1.1--1.2.sql',
+  'btree_gist--1.2.sql',
+  'btree_gist--1.2--1.3.sql',
+  'btree_gist--1.3--1.4.sql',
+  'btree_gist--1.4--1.5.sql',
+  'btree_gist--1.5--1.6.sql',
+  'btree_gist--1.6--1.7.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'btree_gist',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'init',
+      'int2',
+      'int4',
+      'int8',
+      'float4',
+      'float8',
+      'cash',
+      'oid',
+      'timestamp',
+      'timestamptz',
+      'time',
+      'timetz',
+      'date',
+      'interval',
+      'macaddr',
+      'macaddr8',
+      'inet',
+      'cidr',
+      'text',
+      'varchar',
+      'char',
+      'bytea',
+      'bit',
+      'varbit',
+      'numeric',
+      'uuid',
+      'not_equal',
+      'enum',
+      'bool',
+    ],
+  },
+}
diff --git a/contrib/citext/meson.build b/contrib/citext/meson.build
new file mode 100644
index 00000000000..507745ba747
--- /dev/null
+++ b/contrib/citext/meson.build
@@ -0,0 +1,33 @@
+citext_sources = files(
+  'citext.c',
+)
+
+citext = shared_module('citext',
+  citext_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'citext.control',
+  'citext--1.0--1.1.sql',
+  'citext--1.1--1.2.sql',
+  'citext--1.2--1.3.sql',
+  'citext--1.3--1.4.sql',
+  'citext--1.4.sql',
+  'citext--1.4--1.5.sql',
+  'citext--1.5--1.6.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'citext',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'create_index_acl',
+      'citext',
+      'citext_utf8',
+    ],
+  },
+}
diff --git a/contrib/cube/meson.build b/contrib/cube/meson.build
new file mode 100644
index 00000000000..6963348b923
--- /dev/null
+++ b/contrib/cube/meson.build
@@ -0,0 +1,49 @@
+cube_sources = files(
+  'cube.c',
+)
+
+# cubescan is compiled as part of cubeparse
+cubescan = custom_target('cubescan',
+  input: ['cubescan.l'],
+  output: ['cubescan.c'],
+  command: [flex_cmd, '@INPUT@'],)
+
+cube_sources += custom_target('cubeparse',
+  input: 'cubeparse.y',
+  output: 'cubeparse.c',
+  depends: cubescan,
+  command: [bison_cmd, '@INPUT@'],)
+
+cube = shared_module('cube',
+  cube_sources,
+  include_directories: include_directories('.'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'cube.control',
+  'cube--1.0--1.1.sql',
+  'cube--1.1--1.2.sql',
+  'cube--1.2.sql',
+  'cube--1.2--1.3.sql',
+  'cube--1.3--1.4.sql',
+  'cube--1.4--1.5.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'cubedata.h',
+  install_dir: dir_include_extension / 'cube',
+)
+
+tests += {
+  'name': 'cube',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'cube',
+      'cube_sci',
+    ],
+  },
+}
diff --git a/contrib/dblink/meson.build b/contrib/dblink/meson.build
new file mode 100644
index 00000000000..9161f737726
--- /dev/null
+++ b/contrib/dblink/meson.build
@@ -0,0 +1,30 @@
+dblink_sources = files(
+  'dblink.c',
+)
+
+dblink = shared_module('dblink',
+  dblink_sources,
+  kwargs: contrib_mod_args + {
+      'dependencies': pg_mod_args['dependencies'] + [libpq],
+  },
+)
+
+install_data(
+  'dblink.control',
+  'dblink--1.0--1.1.sql',
+  'dblink--1.1--1.2.sql',
+  'dblink--1.2.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dblink',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dblink',
+    ],
+    'regress_args': ['--dlpath', meson.build_root() / 'src/test/regress'],
+  },
+}
diff --git a/contrib/dict_int/meson.build b/contrib/dict_int/meson.build
new file mode 100644
index 00000000000..2c937a3df5e
--- /dev/null
+++ b/contrib/dict_int/meson.build
@@ -0,0 +1,21 @@
+dict_int = shared_module('dict_int',
+  files('dict_int.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'dict_int.control',
+  'dict_int--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dict_int',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dict_int',
+    ],
+  },
+}
diff --git a/contrib/dict_xsyn/meson.build b/contrib/dict_xsyn/meson.build
new file mode 100644
index 00000000000..ec6e175733d
--- /dev/null
+++ b/contrib/dict_xsyn/meson.build
@@ -0,0 +1,28 @@
+dict_xsyn = shared_module('dict_xsyn',
+  files('dict_xsyn.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'dict_xsyn.control',
+  'dict_xsyn--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'xsyn_sample.rules',
+  kwargs: contrib_data_args + {
+    'install_dir': dir_data / 'tsearch_data'
+  }
+)
+
+tests += {
+  'name': 'dict_xsyn',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dict_xsyn',
+    ],
+  },
+}
diff --git a/contrib/earthdistance/meson.build b/contrib/earthdistance/meson.build
new file mode 100644
index 00000000000..35b448870b8
--- /dev/null
+++ b/contrib/earthdistance/meson.build
@@ -0,0 +1,22 @@
+earthdistance = shared_module('earthdistance',
+  files('earthdistance.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'earthdistance.control',
+  'earthdistance--1.0--1.1.sql',
+  'earthdistance--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'earthdistance',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'earthdistance',
+    ],
+  },
+}
diff --git a/contrib/file_fdw/meson.build b/contrib/file_fdw/meson.build
new file mode 100644
index 00000000000..26d26d1e0c4
--- /dev/null
+++ b/contrib/file_fdw/meson.build
@@ -0,0 +1,21 @@
+file_fdw = shared_module('file_fdw',
+  files('file_fdw.c'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'file_fdw.control',
+  'file_fdw--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'file_fdw',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'file_fdw',
+    ],
+  },
+}
diff --git a/contrib/fuzzystrmatch/meson.build b/contrib/fuzzystrmatch/meson.build
new file mode 100644
index 00000000000..73d88e92cfe
--- /dev/null
+++ b/contrib/fuzzystrmatch/meson.build
@@ -0,0 +1,25 @@
+fuzzystrmatch = shared_module('fuzzystrmatch',
+  files(
+    'fuzzystrmatch.c',
+    'dmetaphone.c'
+  ),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'fuzzystrmatch.control',
+  'fuzzystrmatch--1.0--1.1.sql',
+  'fuzzystrmatch--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'fuzzystrmatch',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'fuzzystrmatch',
+    ],
+  },
+}
diff --git a/contrib/hstore/meson.build b/contrib/hstore/meson.build
new file mode 100644
index 00000000000..3aed37ce8e1
--- /dev/null
+++ b/contrib/hstore/meson.build
@@ -0,0 +1,44 @@
+# .. so that includes of hstore/hstore.h work
+hstore_inc = include_directories('.', '../')
+
+hstore = shared_module('hstore',
+  files(
+    'hstore_compat.c',
+    'hstore_gin.c',
+    'hstore_gist.c',
+    'hstore_io.c',
+    'hstore_op.c',
+    'hstore_subs.c',
+  ),
+  c_pch: pch_c_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'hstore.control',
+  'hstore--1.1--1.2.sql',
+  'hstore--1.2--1.3.sql',
+  'hstore--1.3--1.4.sql',
+  'hstore--1.4.sql',
+  'hstore--1.4--1.5.sql',
+  'hstore--1.5--1.6.sql',
+  'hstore--1.6--1.7.sql',
+  'hstore--1.7--1.8.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'hstore.h',
+  install_dir: dir_include_extension / 'hstore',
+)
+
+tests += {
+  'name': 'hstore',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'hstore',
+    ],
+  },
+}
diff --git a/contrib/hstore_plperl/meson.build b/contrib/hstore_plperl/meson.build
new file mode 100644
index 00000000000..66eaf3f6cab
--- /dev/null
+++ b/contrib/hstore_plperl/meson.build
@@ -0,0 +1,40 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+hstore_plperl_sources = files(
+  'hstore_plperl.c',
+)
+
+hstore_plperl = shared_module('hstore_plperl',
+  hstore_plperl_sources,
+  include_directories: [plperl_inc, hstore_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [perl_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'hstore_plperl.control',
+  'hstore_plperl--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'hstore_plperlu.control',
+  'hstore_plperlu--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'hstore_plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'hstore_plperl',
+      'hstore_plperlu',
+      'create_transform',
+    ],
+  },
+}
diff --git a/contrib/hstore_plpython/meson.build b/contrib/hstore_plpython/meson.build
new file mode 100644
index 00000000000..ba53c888e13
--- /dev/null
+++ b/contrib/hstore_plpython/meson.build
@@ -0,0 +1,36 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+hstore_plpython_sources = files(
+  'hstore_plpython.c',
+)
+
+hstore_plpython = shared_module('hstore_plpython3',
+  hstore_plpython_sources,
+  include_directories: [plpython_inc, hstore_inc, ],
+  kwargs: pg_mod_args + {
+    'c_args': ['-DPLPYTHON_LIBNAME="plpython3"'] + contrib_mod_args['c_args'],
+    'dependencies': [python3_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'hstore_plpython3u--1.0.sql',
+  'hstore_plpython3u.control',
+  kwargs: contrib_data_args,
+)
+
+hstore_plpython_regress = [
+  'hstore_plpython'
+]
+
+tests += {
+  'name': 'hstore_plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': hstore_plpython_regress,
+    'regress_args': ['--load-extension=hstore'],
+  },
+}
diff --git a/contrib/intagg/meson.build b/contrib/intagg/meson.build
new file mode 100644
index 00000000000..a0f39366f47
--- /dev/null
+++ b/contrib/intagg/meson.build
@@ -0,0 +1,6 @@
+install_data(
+  'intagg.control',
+  'intagg--1.0--1.1.sql',
+  'intagg--1.1.sql',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/intarray/meson.build b/contrib/intarray/meson.build
new file mode 100644
index 00000000000..dfbfbc9fa6a
--- /dev/null
+++ b/contrib/intarray/meson.build
@@ -0,0 +1,36 @@
+intarray_sources = files(
+  '_int_bool.c',
+  '_int_gin.c',
+  '_int_gist.c',
+  '_int_op.c',
+  '_int_selfuncs.c',
+  '_int_tool.c',
+  '_intbig_gist.c',
+)
+
+intarray = shared_module('_int',
+  intarray_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'intarray.control',
+  'intarray--1.0--1.1.sql',
+  'intarray--1.1--1.2.sql',
+  'intarray--1.2.sql',
+  'intarray--1.2--1.3.sql',
+  'intarray--1.3--1.4.sql',
+  'intarray--1.4--1.5.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'intarray',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      '_int',
+    ],
+  },
+}
diff --git a/contrib/isn/meson.build b/contrib/isn/meson.build
new file mode 100644
index 00000000000..508e2dfa080
--- /dev/null
+++ b/contrib/isn/meson.build
@@ -0,0 +1,32 @@
+isn_sources = files(
+  'isn.c',
+)
+
+isn = shared_module('isn',
+  isn_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'isn.control',
+  'isn--1.0--1.1.sql',
+  'isn--1.1--1.2.sql',
+  'isn--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'isn.h',
+  install_dir: dir_include_extension / 'isn',
+)
+
+tests += {
+  'name': 'isn',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'isn',
+    ],
+  },
+}
diff --git a/contrib/jsonb_plperl/meson.build b/contrib/jsonb_plperl/meson.build
new file mode 100644
index 00000000000..7fd4652fcfb
--- /dev/null
+++ b/contrib/jsonb_plperl/meson.build
@@ -0,0 +1,40 @@
+if not perl_dep.found()
+  subdir_done()
+endif
+
+jsonb_plperl_sources = files(
+  'jsonb_plperl.c',
+)
+
+jsonb_plperl = shared_module('jsonb_plperl',
+  jsonb_plperl_sources,
+  include_directories: [plperl_inc],
+  kwargs: pg_mod_args + {
+    'dependencies': [perl_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'jsonb_plperl.control',
+  'jsonb_plperl--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'jsonb_plperlu.control',
+  'jsonb_plperlu--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'jsonb_plperl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'jsonb_plperl',
+      'jsonb_plperlu',
+    ],
+  },
+}
diff --git a/contrib/jsonb_plpython/meson.build b/contrib/jsonb_plpython/meson.build
new file mode 100644
index 00000000000..95b3b3aeef4
--- /dev/null
+++ b/contrib/jsonb_plpython/meson.build
@@ -0,0 +1,35 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+jsonb_plpython_sources = files(
+  'jsonb_plpython.c',
+)
+
+jsonb_plpython = shared_module('jsonb_plpython3',
+  jsonb_plpython_sources,
+  include_directories: [plpython_inc],
+  kwargs: pg_mod_args + {
+    'c_args': ['-DPLPYTHON_LIBNAME="plpython3"'] + contrib_mod_args['c_args'],
+    'dependencies': [python3_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'jsonb_plpython3u.control',
+  'jsonb_plpython3u--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+jsonb_plpython_regress = [
+  'jsonb_plpython'
+]
+
+tests += {
+  'name': 'jsonb_plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': jsonb_plpython_regress,
+  },
+}
diff --git a/contrib/lo/meson.build b/contrib/lo/meson.build
new file mode 100644
index 00000000000..224a2562017
--- /dev/null
+++ b/contrib/lo/meson.build
@@ -0,0 +1,26 @@
+lo_sources = files(
+  'lo.c',
+)
+
+lo = shared_module('lo',
+  lo_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'lo.control',
+  'lo--1.0--1.1.sql',
+  'lo--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'lo',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'lo',
+    ],
+  },
+}
diff --git a/contrib/ltree/meson.build b/contrib/ltree/meson.build
new file mode 100644
index 00000000000..222c64bb35d
--- /dev/null
+++ b/contrib/ltree/meson.build
@@ -0,0 +1,43 @@
+ltree_sources = files(
+  '_ltree_gist.c',
+  '_ltree_op.c',
+  'crc32.c',
+  'lquery_op.c',
+  'ltree_gist.c',
+  'ltree_io.c',
+  'ltree_op.c',
+  'ltxtquery_io.c',
+  'ltxtquery_op.c',
+)
+
+# .. so that includes of ltree/ltree.h work
+ltree_inc = include_directories('.', '../')
+
+ltree = shared_module('ltree',
+  ltree_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'ltree.control',
+  'ltree--1.0--1.1.sql',
+  'ltree--1.1--1.2.sql',
+  'ltree--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'ltree.h',
+  install_dir: dir_include_extension / 'ltree',
+)
+
+tests += {
+  'name': 'ltree',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'ltree',
+    ],
+  },
+}
diff --git a/contrib/ltree_plpython/meson.build b/contrib/ltree_plpython/meson.build
new file mode 100644
index 00000000000..52ab66e46ca
--- /dev/null
+++ b/contrib/ltree_plpython/meson.build
@@ -0,0 +1,36 @@
+if not python3_dep.found()
+  subdir_done()
+endif
+
+ltree_plpython_sources = files(
+  'ltree_plpython.c',
+)
+
+ltree_plpython = shared_module('ltree_plpython3',
+  ltree_plpython_sources,
+  include_directories: [plpython_inc, ltree_inc],
+  kwargs: pg_mod_args + {
+    'c_args': ['-DPLPYTHON_LIBNAME="plpython3"'] + contrib_mod_args['c_args'],
+    'dependencies': [python3_dep, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'ltree_plpython3u--1.0.sql',
+  'ltree_plpython3u.control',
+  kwargs: contrib_data_args,
+)
+
+ltree_plpython_regress = [
+  'ltree_plpython'
+]
+
+tests += {
+  'name': 'ltree_plpython',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': ltree_plpython_regress,
+    'regress_args': ['--load-extension=ltree'],
+  },
+}
diff --git a/contrib/meson.build b/contrib/meson.build
new file mode 100644
index 00000000000..84752d4bd0f
--- /dev/null
+++ b/contrib/meson.build
@@ -0,0 +1,66 @@
+contrib_mod_args = pg_mod_args
+
+contrib_data_dir = dir_data_extension
+contrib_data_args = {
+  'install_dir': contrib_data_dir,
+}
+
+subdir('adminpack')
+subdir('amcheck')
+subdir('auth_delay')
+subdir('auto_explain')
+subdir('basic_archive')
+subdir('bloom')
+subdir('basebackup_to_shell')
+subdir('bool_plperl')
+subdir('btree_gin')
+subdir('btree_gist')
+subdir('citext')
+subdir('cube')
+subdir('dblink')
+subdir('dict_int')
+subdir('dict_xsyn')
+subdir('earthdistance')
+subdir('file_fdw')
+subdir('fuzzystrmatch')
+subdir('hstore')
+subdir('hstore_plperl')
+subdir('hstore_plpython')
+subdir('intagg')
+subdir('intarray')
+subdir('isn')
+subdir('jsonb_plperl')
+subdir('jsonb_plpython')
+subdir('lo')
+subdir('ltree')
+subdir('ltree_plpython')
+subdir('oid2name')
+subdir('old_snapshot')
+subdir('pageinspect')
+subdir('passwordcheck')
+subdir('pg_buffercache')
+subdir('pgcrypto')
+subdir('pg_freespacemap')
+subdir('pg_prewarm')
+subdir('pgrowlocks')
+subdir('pg_stat_statements')
+subdir('pgstattuple')
+subdir('pg_surgery')
+subdir('pg_trgm')
+subdir('pg_visibility')
+subdir('pg_walinspect')
+subdir('postgres_fdw')
+subdir('seg')
+subdir('sepgsql')
+subdir('spi')
+subdir('sslinfo')
+# start-scripts doesn't contain build products
+subdir('tablefunc')
+subdir('tcn')
+subdir('test_decoding')
+subdir('tsm_system_rows')
+subdir('tsm_system_time')
+subdir('unaccent')
+subdir('uuid-ossp')
+subdir('vacuumlo')
+subdir('xml2')
diff --git a/contrib/oid2name/meson.build b/contrib/oid2name/meson.build
new file mode 100644
index 00000000000..b3139971140
--- /dev/null
+++ b/contrib/oid2name/meson.build
@@ -0,0 +1,16 @@
+executable('oid2name',
+  ['oid2name.c'],
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name' : 'oid2name',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests' :[
+      't/001_basic.pl',
+    ],
+  },
+}
diff --git a/contrib/old_snapshot/meson.build b/contrib/old_snapshot/meson.build
new file mode 100644
index 00000000000..5785c29e9f8
--- /dev/null
+++ b/contrib/old_snapshot/meson.build
@@ -0,0 +1,14 @@
+old_snapshot_sources = files(
+  'time_mapping.c',
+)
+
+old_snapshot = shared_module('old_snapshot',
+  old_snapshot_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'old_snapshot.control',
+  'old_snapshot--1.0.sql',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/pageinspect/meson.build b/contrib/pageinspect/meson.build
new file mode 100644
index 00000000000..5cacb9b323b
--- /dev/null
+++ b/contrib/pageinspect/meson.build
@@ -0,0 +1,59 @@
+pageinspect_sources = files(
+  'brinfuncs.c',
+  'btreefuncs.c',
+  'fsmfuncs.c',
+  'ginfuncs.c',
+  'gistfuncs.c',
+  'hashfuncs.c',
+  'heapfuncs.c',
+  'rawpage.c',
+)
+
+if host_system == 'win32'
+  pageinspect_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_lib_cmd + [
+        '--FILEDESC', 'pageinspect - functions to inspect contents of database pages',
+        '--NAME', 'pageinspect',]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+pageinspect = shared_module('pageinspect',
+  pageinspect_sources,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pageinspect--1.0--1.1.sql',
+  'pageinspect--1.1--1.2.sql',
+  'pageinspect--1.2--1.3.sql',
+  'pageinspect--1.3--1.4.sql',
+  'pageinspect--1.4--1.5.sql',
+  'pageinspect--1.5--1.6.sql',
+  'pageinspect--1.5.sql',
+  'pageinspect--1.6--1.7.sql',
+  'pageinspect--1.7--1.8.sql',
+  'pageinspect--1.8--1.9.sql',
+  'pageinspect--1.9--1.10.sql',
+  'pageinspect.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pageinspect',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'page',
+      'btree',
+      'brin',
+      'gin',
+      'gist',
+      'hash',
+      'checksum',
+      'oldextversions',
+    ],
+  },
+}
diff --git a/contrib/passwordcheck/meson.build b/contrib/passwordcheck/meson.build
new file mode 100644
index 00000000000..80667d8a9f0
--- /dev/null
+++ b/contrib/passwordcheck/meson.build
@@ -0,0 +1,29 @@
+passwordcheck_sources = files(
+  'passwordcheck.c',
+)
+
+passwordcheck_c_args = []
+passwordcheck_deps = []
+
+# uncomment the following two lines to enable cracklib support
+# passwordcheck_c_args += ['-DUSE_CRACKLIB', '-DCRACKLIB_DICTPATH="/usr/lib/cracklib_dict"']
+# passwordcheck_deps += [cc.find_library('crack')]
+
+passwordcheck = shared_module('passwordcheck',
+  passwordcheck_sources,
+  kwargs: contrib_mod_args + {
+    'c_args': contrib_mod_args.get('c_args') + passwordcheck_c_args,
+    'dependencies': contrib_mod_args.get('dependencies') + passwordcheck_deps,
+  }
+)
+
+tests += {
+  'name': 'passwordcheck',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'passwordcheck',
+    ],
+  },
+}
diff --git a/contrib/pg_buffercache/meson.build b/contrib/pg_buffercache/meson.build
new file mode 100644
index 00000000000..ffd98a9bf90
--- /dev/null
+++ b/contrib/pg_buffercache/meson.build
@@ -0,0 +1,16 @@
+pg_buffercache = shared_module('pg_buffercache',
+  files(
+    'pg_buffercache_pages.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_buffercache--1.0--1.1.sql',
+  'pg_buffercache--1.1--1.2.sql',
+  'pg_buffercache--1.2--1.3.sql',
+  'pg_buffercache--1.2.sql',
+  'pg_buffercache.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/pg_freespacemap/meson.build b/contrib/pg_freespacemap/meson.build
new file mode 100644
index 00000000000..03e781b7bab
--- /dev/null
+++ b/contrib/pg_freespacemap/meson.build
@@ -0,0 +1,29 @@
+pg_freespacemap = shared_module('pg_freespacemap',
+  files(
+    'pg_freespacemap.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_freespacemap--1.0--1.1.sql',
+  'pg_freespacemap--1.1--1.2.sql',
+  'pg_freespacemap--1.1.sql',
+  'pg_freespacemap.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_freespacemap',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_freespacemap',
+    ],
+    'regress_args': [
+      '--temp-config', files('pg_freespacemap.conf')
+    ],
+  },
+}
diff --git a/contrib/pg_prewarm/meson.build b/contrib/pg_prewarm/meson.build
new file mode 100644
index 00000000000..78e132e7831
--- /dev/null
+++ b/contrib/pg_prewarm/meson.build
@@ -0,0 +1,16 @@
+pg_prewarm = shared_module('pg_prewarm',
+  files(
+    'autoprewarm.c',
+    'pg_prewarm.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_prewarm--1.0--1.1.sql',
+  'pg_prewarm--1.1--1.2.sql',
+  'pg_prewarm--1.1.sql',
+  'pg_prewarm.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/pg_stat_statements/meson.build b/contrib/pg_stat_statements/meson.build
new file mode 100644
index 00000000000..1c76bf9cfbc
--- /dev/null
+++ b/contrib/pg_stat_statements/meson.build
@@ -0,0 +1,34 @@
+pg_stat_statements = shared_module('pg_stat_statements',
+  files('pg_stat_statements.c'),
+  kwargs: contrib_mod_args + {
+      'dependencies': contrib_mod_args['dependencies'],
+  },
+)
+
+install_data(
+  'pg_stat_statements.control',
+  'pg_stat_statements--1.4.sql',
+  'pg_stat_statements--1.9--1.10.sql',
+  'pg_stat_statements--1.8--1.9.sql',
+  'pg_stat_statements--1.7--1.8.sql',
+  'pg_stat_statements--1.6--1.7.sql',
+  'pg_stat_statements--1.5--1.6.sql',
+  'pg_stat_statements--1.4--1.5.sql',
+  'pg_stat_statements--1.3--1.4.sql',
+  'pg_stat_statements--1.2--1.3.sql',
+  'pg_stat_statements--1.1--1.2.sql',
+  'pg_stat_statements--1.0--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_stat_statements',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_stat_statements',
+    ],
+    'regress_args': ['--temp-config', files('pg_stat_statements.conf')],
+  },
+}
diff --git a/contrib/pg_surgery/meson.build b/contrib/pg_surgery/meson.build
new file mode 100644
index 00000000000..70ae62fccef
--- /dev/null
+++ b/contrib/pg_surgery/meson.build
@@ -0,0 +1,25 @@
+pg_surgery = shared_module('pg_surgery',
+  files(
+    'heap_surgery.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_surgery--1.0.sql',
+  'pg_surgery.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pg_surgery',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'heap_surgery',
+    ],
+  },
+}
diff --git a/contrib/pg_trgm/meson.build b/contrib/pg_trgm/meson.build
new file mode 100644
index 00000000000..6818cddc63f
--- /dev/null
+++ b/contrib/pg_trgm/meson.build
@@ -0,0 +1,35 @@
+pg_trgm = shared_module('pg_trgm',
+  files(
+    'trgm_gin.c',
+    'trgm_gist.c',
+    'trgm_op.c',
+    'trgm_regexp.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_trgm--1.0--1.1.sql',
+  'pg_trgm--1.1--1.2.sql',
+  'pg_trgm--1.2--1.3.sql',
+  'pg_trgm--1.3--1.4.sql',
+  'pg_trgm--1.3.sql',
+  'pg_trgm--1.4--1.5.sql',
+  'pg_trgm--1.5--1.6.sql',
+  'pg_trgm.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_trgm',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_trgm',
+      'pg_word_trgm',
+      'pg_strict_word_trgm',
+    ],
+  },
+}
diff --git a/contrib/pg_visibility/meson.build b/contrib/pg_visibility/meson.build
new file mode 100644
index 00000000000..7eacc25f968
--- /dev/null
+++ b/contrib/pg_visibility/meson.build
@@ -0,0 +1,27 @@
+pg_visibility = shared_module('pg_visibility',
+  files(
+    'pg_visibility.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pg_visibility--1.0--1.1.sql',
+  'pg_visibility--1.1--1.2.sql',
+  'pg_visibility--1.1.sql',
+  'pg_visibility.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pg_visibility',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_visibility',
+    ],
+  },
+}
diff --git a/contrib/pg_walinspect/meson.build b/contrib/pg_walinspect/meson.build
new file mode 100644
index 00000000000..bdd817bba10
--- /dev/null
+++ b/contrib/pg_walinspect/meson.build
@@ -0,0 +1,37 @@
+pg_walinspect_sources = files('pg_walinspect.c')
+
+if host_system == 'win32'
+  pg_walinspect_sources += windows.compile_resources(
+    custom_target('win32ver.rc', kwargs: rcgen_kw,
+      command: rcgen_bin_cmd + [
+        '--FILEDESC', 'pg_walinspect - functions to inspect contents of PostgreSQL Write-Ahead Log',
+        '--NAME', 'pg_walinspect',
+      ]),
+    kwargs: rccompile_kw,
+  )
+endif
+
+pg_walinspect = shared_module('pg_walinspect',
+  pg_walinspect_sources,
+  kwargs: contrib_mod_args + {
+      'dependencies': contrib_mod_args['dependencies'],
+  },
+)
+
+install_data(
+  'pg_walinspect.control',
+  'pg_walinspect--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_walinspect',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_walinspect',
+    ],
+    'regress_args': ['--temp-config', files('walinspect.conf')],
+  },
+}
diff --git a/contrib/pgcrypto/meson.build b/contrib/pgcrypto/meson.build
new file mode 100644
index 00000000000..54ba2e7f13b
--- /dev/null
+++ b/contrib/pgcrypto/meson.build
@@ -0,0 +1,100 @@
+if not ssl.found()
+  subdir_done()
+endif
+
+pgcrypto_sources = files(
+  'crypt-blowfish.c',
+  'crypt-des.c',
+  'crypt-gensalt.c',
+  'crypt-md5.c',
+  'mbuf.c',
+  'pgcrypto.c',
+  'pgp-armor.c',
+  'pgp-cfb.c',
+  'pgp-compress.c',
+  'pgp-decrypt.c',
+  'pgp-encrypt.c',
+  'pgp-info.c',
+  'pgp-mpi.c',
+  'pgp-pgsql.c',
+  'pgp-pubdec.c',
+  'pgp-pubenc.c',
+  'pgp-pubkey.c',
+  'pgp-s2k.c',
+  'pgp.c',
+  'px-crypt.c',
+  'px-hmac.c',
+  'px.c',
+)
+
+pgcrypto_regress = [
+  'init',
+  'md5',
+  'sha1',
+  'hmac-md5',
+  'hmac-sha1',
+  'blowfish',
+  'rijndael',
+  'sha2',
+  'des',
+  '3des',
+  'cast5',
+  'crypt-des',
+  'crypt-md5',
+  'crypt-blowfish',
+  'crypt-xdes',
+  'pgp-armor',
+  'pgp-decrypt',
+  'pgp-encrypt',
+  'pgp-pubkey-decrypt',
+  'pgp-pubkey-encrypt',
+  'pgp-info',
+]
+
+pgcrypto_openssl_sources = files(
+  'openssl.c',
+  'pgp-mpi-openssl.c',
+)
+
+pgcrypto_deps = []
+pgcrypto_link_with = []
+
+pgcrypto_deps += ssl
+pgcrypto_sources += pgcrypto_openssl_sources
+
+if zlib.found()
+  pgcrypto_deps += zlib
+  pgcrypto_regress += 'pgp-compression'
+else
+  pgcrypto_regress += 'pgp-zlib-DISABLED'
+endif
+
+pgcrypto = shared_module('pgcrypto',
+  pgcrypto_sources,
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args + {
+    'link_with': [pgcrypto_link_with, contrib_mod_args.get('link_with', [])],
+    'dependencies': [pgcrypto_deps, contrib_mod_args['dependencies']]
+  },
+)
+
+install_data(
+  'pgcrypto--1.0--1.1.sql',
+  'pgcrypto--1.1--1.2.sql',
+  'pgcrypto--1.2--1.3.sql',
+  'pgcrypto--1.3.sql',
+  'pgcrypto.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pgcrypto',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      pgcrypto_regress,
+    ],
+  },
+}
diff --git a/contrib/pgrowlocks/meson.build b/contrib/pgrowlocks/meson.build
new file mode 100644
index 00000000000..358d23cf2ee
--- /dev/null
+++ b/contrib/pgrowlocks/meson.build
@@ -0,0 +1,15 @@
+pgrowlocks = shared_module('pgrowlocks',
+  files(
+    'pgrowlocks.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pgrowlocks--1.0--1.1.sql',
+  'pgrowlocks--1.1--1.2.sql',
+  'pgrowlocks--1.2.sql',
+  'pgrowlocks.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/pgstattuple/meson.build b/contrib/pgstattuple/meson.build
new file mode 100644
index 00000000000..8e765fc997a
--- /dev/null
+++ b/contrib/pgstattuple/meson.build
@@ -0,0 +1,32 @@
+pgstattuple = shared_module('pgstattuple',
+  files(
+    'pgstatapprox.c',
+    'pgstatindex.c',
+    'pgstattuple.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'pgstattuple--1.0--1.1.sql',
+  'pgstattuple--1.1--1.2.sql',
+  'pgstattuple--1.2--1.3.sql',
+  'pgstattuple--1.3--1.4.sql',
+  'pgstattuple--1.4--1.5.sql',
+  'pgstattuple--1.4.sql',
+  'pgstattuple.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'pgstattuple',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pgstattuple',
+    ],
+  },
+}
diff --git a/contrib/postgres_fdw/meson.build b/contrib/postgres_fdw/meson.build
new file mode 100644
index 00000000000..9be84a6b67f
--- /dev/null
+++ b/contrib/postgres_fdw/meson.build
@@ -0,0 +1,33 @@
+postgres_fdw_sources = files(
+  'connection.c',
+  'deparse.c',
+  'option.c',
+  'postgres_fdw.c',
+  'shippable.c',
+)
+
+postgres_fdw = shared_module('postgres_fdw',
+  postgres_fdw_sources,
+  kwargs: contrib_mod_args + {
+      'dependencies': pg_mod_args['dependencies'] + [libpq],
+  },
+)
+
+install_data(
+  'postgres_fdw.control',
+  'postgres_fdw--1.0.sql',
+  'postgres_fdw--1.0--1.1.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'postgres_fdw',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'postgres_fdw',
+    ],
+    'regress_args': ['--dlpath', meson.build_root() / 'src/test/regress'],
+  },
+}
diff --git a/contrib/seg/meson.build b/contrib/seg/meson.build
new file mode 100644
index 00000000000..41596a9f653
--- /dev/null
+++ b/contrib/seg/meson.build
@@ -0,0 +1,47 @@
+seg_sources = files(
+  'seg.c',
+)
+
+# segscan is compiled as part of segparse
+segscan = custom_target('segscan',
+  input: ['segscan.l'],
+  output: ['segscan.c'],
+  command: [flex_cmd, '@INPUT@'],)
+
+seg_sources += custom_target('segparse',
+  input: 'segparse.y',
+  output: 'segparse.c',
+  depends: segscan,
+  command: [bison_cmd, '@INPUT@'],)
+
+seg = shared_module('seg',
+  seg_sources,
+  include_directories: include_directories('.'),
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'seg.control',
+  'seg--1.0--1.1.sql',
+  'seg--1.1--1.2.sql',
+  'seg--1.1.sql',
+  'seg--1.2--1.3.sql',
+  'seg--1.3--1.4.sql',
+  kwargs: contrib_data_args,
+)
+
+install_headers(
+  'segdata.h',
+  install_dir: dir_include_extension / 'seg',
+)
+
+tests += {
+  'name': 'seg',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'seg',
+    ],
+  },
+}
diff --git a/contrib/sepgsql/meson.build b/contrib/sepgsql/meson.build
new file mode 100644
index 00000000000..9fa6013c91f
--- /dev/null
+++ b/contrib/sepgsql/meson.build
@@ -0,0 +1,34 @@
+if not selinux.found()
+  subdir_done()
+endif
+
+sepgsql_sources = files(
+  'database.c',
+  'dml.c',
+  'hooks.c',
+  'label.c',
+  'proc.c',
+  'relation.c',
+  'schema.c',
+  'selinux.c',
+  'uavc.c',
+)
+
+sepgsql = shared_module('sepgsql',
+  sepgsql_sources,
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args + {
+    'dependencies': [selinux, pg_mod_args['dependencies']],
+  }
+)
+
+custom_target('sepgsql.sql',
+  input: 'sepgsql.sql.in',
+  output: 'sepgsql.sql',
+  command: [sed, '-e', 's,MODULE_PATHNAME,$libdir/sepgsql,g', '@INPUT@'],
+  capture: true,
+  install: true,
+  install_dir: contrib_data_args['install_dir'],
+)
+
+# TODO: implement sepgsql tests
diff --git a/contrib/spi/meson.build b/contrib/spi/meson.build
new file mode 100644
index 00000000000..4c26242595a
--- /dev/null
+++ b/contrib/spi/meson.build
@@ -0,0 +1,47 @@
+autoinc = shared_module('autoinc',
+  ['autoinc.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data('autoinc.control', 'autoinc--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+
+insert_username = shared_module('insert_username',
+  ['insert_username.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'insert_username.control',
+  'insert_username--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+
+moddatetime = shared_module('moddatetime',
+  ['moddatetime.c'],
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'moddatetime.control',
+  'moddatetime--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+# this is needed for the regression tests;
+# comment out if you want a quieter refint package for other uses
+refint_cflags = ['-DREFINT_VERBOSE']
+
+refint = shared_module('refint',
+  ['refint.c'],
+  kwargs: contrib_mod_args + {
+    'c_args': refint_cflags + contrib_mod_args['c_args'],
+  },
+)
+
+install_data('refint.control', 'refint--1.0.sql',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/sslinfo/meson.build b/contrib/sslinfo/meson.build
new file mode 100644
index 00000000000..dfa51a0934c
--- /dev/null
+++ b/contrib/sslinfo/meson.build
@@ -0,0 +1,21 @@
+if not ssl.found()
+  subdir_done()
+endif
+
+sslinfo = shared_module('sslinfo',
+  files(
+    'sslinfo.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args + {
+    'dependencies': [ssl, pg_mod_args['dependencies']],
+  }
+)
+
+install_data(
+  'sslinfo--1.0--1.1.sql',
+  'sslinfo--1.1--1.2.sql',
+  'sslinfo--1.2.sql',
+  'sslinfo.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/tablefunc/meson.build b/contrib/tablefunc/meson.build
new file mode 100644
index 00000000000..e94d9d7de44
--- /dev/null
+++ b/contrib/tablefunc/meson.build
@@ -0,0 +1,25 @@
+tablefunc = shared_module('tablefunc',
+  files(
+    'tablefunc.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tablefunc--1.0.sql',
+  'tablefunc.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'tablefunc',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'tablefunc',
+    ],
+  },
+}
diff --git a/contrib/tcn/meson.build b/contrib/tcn/meson.build
new file mode 100644
index 00000000000..c4f8207b25e
--- /dev/null
+++ b/contrib/tcn/meson.build
@@ -0,0 +1,13 @@
+tcn = shared_module('tcn',
+  files(
+    'tcn.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tcn--1.0.sql',
+  'tcn.control',
+  kwargs: contrib_data_args,
+)
diff --git a/contrib/test_decoding/meson.build b/contrib/test_decoding/meson.build
new file mode 100644
index 00000000000..0719350a0dd
--- /dev/null
+++ b/contrib/test_decoding/meson.build
@@ -0,0 +1,62 @@
+test_decoding_sources = files(
+  'test_decoding.c',
+)
+
+test_decoding = shared_module('test_decoding',
+  test_decoding_sources,
+  kwargs: contrib_mod_args,
+)
+
+tests += {
+  'name': 'test_decoding',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'ddl',
+      'xact',
+      'rewrite',
+      'toast',
+      'permissions',
+      'decoding_in_xact',
+      'decoding_into_rel',
+      'binary',
+      'prepared',
+      'replorigin',
+      'time',
+      'messages',
+      'spill',
+      'slot',
+      'truncate',
+      'stream',
+      'stats',
+      'twophase',
+      'twophase_stream',
+    ],
+    'regress_args': [
+      '--temp-config', files('logical.conf'),
+    ],
+  },
+  'isolation': {
+    'specs': [
+      'mxact',
+      'delayed_startup',
+      'ondisk_startup',
+      'concurrent_ddl_dml',
+      'oldest_xmin',
+      'snapshot_transfer',
+      'subxact_without_top',
+      'concurrent_stream',
+      'twophase_snapshot',
+      'slot_creation_error',
+    ],
+    'regress_args': [
+      '--temp-config', files('logical.conf'),
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_repl_stats.pl',
+    ],
+  },
+}
diff --git a/contrib/tsm_system_rows/meson.build b/contrib/tsm_system_rows/meson.build
new file mode 100644
index 00000000000..577482d18f2
--- /dev/null
+++ b/contrib/tsm_system_rows/meson.build
@@ -0,0 +1,24 @@
+tsm_system_rows = shared_module('tsm_system_rows',
+  files(
+    'tsm_system_rows.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tsm_system_rows--1.0.sql',
+  'tsm_system_rows.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'tsm_system_rows',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'tsm_system_rows',
+    ],
+  },
+}
diff --git a/contrib/tsm_system_time/meson.build b/contrib/tsm_system_time/meson.build
new file mode 100644
index 00000000000..ce5fd138501
--- /dev/null
+++ b/contrib/tsm_system_time/meson.build
@@ -0,0 +1,24 @@
+tsm_system_time = shared_module('tsm_system_time',
+  files(
+    'tsm_system_time.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'tsm_system_time--1.0.sql',
+  'tsm_system_time.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'tsm_system_time',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'tsm_system_time',
+    ],
+  },
+}
diff --git a/contrib/unaccent/meson.build b/contrib/unaccent/meson.build
new file mode 100644
index 00000000000..e99bbe5bdf9
--- /dev/null
+++ b/contrib/unaccent/meson.build
@@ -0,0 +1,32 @@
+unaccent = shared_module('unaccent',
+  files(
+    'unaccent.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args,
+)
+
+install_data(
+  'unaccent--1.0--1.1.sql',
+  'unaccent--1.1.sql',
+  'unaccent.control',
+  kwargs: contrib_data_args,
+)
+
+install_data(
+  'unaccent.rules',
+  install_dir: dir_data / 'tsearch_data'
+)
+
+# XXX: Implement downlo
+tests += {
+  'name': 'unaccent',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'unaccent',
+    ],
+    'regress_args': ['--encoding=UTF8'],
+  },
+}
diff --git a/contrib/uuid-ossp/meson.build b/contrib/uuid-ossp/meson.build
new file mode 100644
index 00000000000..dac73feae4e
--- /dev/null
+++ b/contrib/uuid-ossp/meson.build
@@ -0,0 +1,33 @@
+if not uuid.found()
+  subdir_done()
+endif
+
+uuid_ossp = shared_module('uuid-ossp',
+  files(
+    'uuid-ossp.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args + {
+    'dependencies': [uuid, pg_mod_args['dependencies']],
+  },
+
+)
+
+install_data(
+  'uuid-ossp--1.0--1.1.sql',
+  'uuid-ossp--1.1.sql',
+  'uuid-ossp.control',
+  kwargs: contrib_data_args,
+)
+
+
+tests += {
+  'name': 'uuid-ossp',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'uuid_ossp',
+    ],
+  },
+}
diff --git a/contrib/vacuumlo/meson.build b/contrib/vacuumlo/meson.build
new file mode 100644
index 00000000000..ed0740212f6
--- /dev/null
+++ b/contrib/vacuumlo/meson.build
@@ -0,0 +1,16 @@
+executable('vacuumlo',
+  ['vacuumlo.c'],
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args,
+)
+
+tests += {
+  'name' : 'vacuumlo',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests' :[
+      't/001_basic.pl',
+    ],
+  },
+}
diff --git a/contrib/xml2/meson.build b/contrib/xml2/meson.build
new file mode 100644
index 00000000000..d25549a1fb3
--- /dev/null
+++ b/contrib/xml2/meson.build
@@ -0,0 +1,32 @@
+if not libxml.found()
+  subdir_done()
+endif
+
+xml2 = shared_module('pgxml',
+  files(
+    'xpath.c',
+    'xslt_proc.c',
+  ),
+  c_pch: pch_postgres_h,
+  kwargs: contrib_mod_args + {
+    'dependencies': [libxml, libxslt, contrib_mod_args['dependencies']],
+  },
+)
+
+install_data(
+  'xml2--1.0--1.1.sql',
+  'xml2--1.1.sql',
+  'xml2.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'xml2',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'xml2',
+    ],
+  },
+}
diff --git a/src/interfaces/ecpg/compatlib/meson.build b/src/interfaces/ecpg/compatlib/meson.build
new file mode 100644
index 00000000000..5dbb8d8ca32
--- /dev/null
+++ b/src/interfaces/ecpg/compatlib/meson.build
@@ -0,0 +1,15 @@
+ecpg_compat = both_libraries('libecpg_compat',
+   'informix.c',
+   include_directories : ['.', ecpg_inc, postgres_inc, libpq_inc],
+   dependencies: [frontend_shlib_code, thread_dep],
+   link_with: [ecpglib, ecpg_pgtypes],
+   soversion: 3,
+   version: '3.'+pg_version_major.to_string(),
+   kwargs: default_lib_args,
+)
+
+pkgconfig.generate(
+  ecpg_compat.get_shared_lib(),
+  description: 'PostgreSQL libecpg_compat library',
+  url: pg_url,
+)
diff --git a/src/interfaces/ecpg/ecpglib/meson.build b/src/interfaces/ecpg/ecpglib/meson.build
new file mode 100644
index 00000000000..3c40a4283f1
--- /dev/null
+++ b/src/interfaces/ecpg/ecpglib/meson.build
@@ -0,0 +1,30 @@
+ecpglib_sources = files(
+  'connect.c',
+  'data.c',
+  'descriptor.c',
+  'error.c',
+  'execute.c',
+  'memory.c',
+  'misc.c',
+  'prepare.c',
+  'sqlda.c',
+  'typename.c',
+)
+
+ecpglib = both_libraries('libecpg',
+  ecpglib_sources,
+  include_directories : ['.', ecpg_inc, postgres_inc],
+  dependencies: [frontend_shlib_code, libpq, thread_dep],
+  link_with: [ecpg_pgtypes],
+  soversion: 6,
+  version: '6.'+pg_version_major.to_string(),
+  kwargs: default_lib_args,
+)
+
+pkgconfig.generate(
+  ecpglib.get_shared_lib(),
+  description: 'PostgreSQL libecpg library',
+  url: pg_url,
+)
+
+subdir('po', if_found: libintl)
diff --git a/src/interfaces/ecpg/ecpglib/po/meson.build b/src/interfaces/ecpg/ecpglib/po/meson.build
new file mode 100644
index 00000000000..246e399ebd3
--- /dev/null
+++ b/src/interfaces/ecpg/ecpglib/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('ecpglib' + '6' + '-' + pg_version_major.to_string())
diff --git a/src/interfaces/ecpg/include/meson.build b/src/interfaces/ecpg/include/meson.build
new file mode 100644
index 00000000000..bd4b66d870c
--- /dev/null
+++ b/src/interfaces/ecpg/include/meson.build
@@ -0,0 +1,48 @@
+ecpg_inc = include_directories('.')
+
+ecpg_conf_keys = [
+  'ENABLE_THREAD_SAFETY',
+  'HAVE_INT64',
+  'HAVE_LONG_INT_64',
+  'HAVE_LONG_LONG_INT_64',
+  'PG_USE_STDBOOL',
+]
+
+ecpg_conf_data = configuration_data()
+
+foreach key : ecpg_conf_keys
+  if cdata.has(key)
+    ecpg_conf_data.set(key, cdata.get(key))
+  endif
+endforeach
+
+configure_file(
+  output: 'ecpg_config.h',
+  configuration: ecpg_conf_data,
+  install_dir: dir_include,
+)
+
+install_headers(
+  'ecpg_informix.h',
+  'ecpgerrno.h',
+  'ecpglib.h',
+  'ecpgtype.h',
+  'pgtypes.h',
+  'pgtypes_date.h',
+  'pgtypes_error.h',
+  'pgtypes_interval.h',
+  'pgtypes_numeric.h',
+  'pgtypes_timestamp.h',
+  'sql3types.h',
+  'sqlca.h',
+  'sqlda.h',
+  'sqlda-compat.h',
+  'sqlda-native.h',
+)
+
+install_headers(
+  'datetime.h',
+  'decimal.h',
+  'sqltypes.h',
+  install_dir: dir_include_pkg / 'informix' / 'esql',
+)
diff --git a/src/interfaces/ecpg/meson.build b/src/interfaces/ecpg/meson.build
new file mode 100644
index 00000000000..2ef24f2966b
--- /dev/null
+++ b/src/interfaces/ecpg/meson.build
@@ -0,0 +1,10 @@
+# TODO: missing handling for exports.txt breaks at least windows
+if host_system == 'win32'
+  subdir_done()
+endif
+
+subdir('include')
+subdir('pgtypeslib')
+subdir('ecpglib')
+subdir('compatlib')
+subdir('preproc')
diff --git a/src/interfaces/ecpg/pgtypeslib/meson.build b/src/interfaces/ecpg/pgtypeslib/meson.build
new file mode 100644
index 00000000000..a58efffbf17
--- /dev/null
+++ b/src/interfaces/ecpg/pgtypeslib/meson.build
@@ -0,0 +1,23 @@
+ecpg_pgtypes_sources = files(
+  'common.c',
+  'datetime.c',
+  'dt_common.c',
+  'interval.c',
+  'numeric.c',
+  'timestamp.c',
+)
+
+ecpg_pgtypes = both_libraries('libpgtypes',
+  ecpg_pgtypes_sources,
+  include_directories : ['.', ecpg_inc, postgres_inc],
+  dependencies: [frontend_shlib_code],
+  version: '3.'+pg_version_major.to_string(),
+  soversion: 3,
+  kwargs: default_lib_args,
+)
+
+pkgconfig.generate(
+  ecpg_pgtypes.get_shared_lib(),
+  description: 'PostgreSQL libpgtypes library',
+  url: pg_url,
+)
diff --git a/src/interfaces/ecpg/preproc/meson.build b/src/interfaces/ecpg/preproc/meson.build
new file mode 100644
index 00000000000..778ba05d2f0
--- /dev/null
+++ b/src/interfaces/ecpg/preproc/meson.build
@@ -0,0 +1,95 @@
+ecpg_sources = files(
+  'c_keywords.c',
+  'descriptor.c',
+  'ecpg.c',
+  'ecpg_keywords.c',
+  'keywords.c',
+  'output.c',
+  'parser.c',
+  'type.c',
+  '../ecpglib/typename.c',
+  'variable.c',
+)
+
+ecpg_sources += custom_target('pgc.c',
+  input: ['pgc.l'],
+  output: ['pgc.c'],
+  command: [flex_cmd, '@INPUT@'],
+)
+
+ecpg_files = [
+    'ecpg.addons',
+    'ecpg.header',
+    'ecpg.tokens',
+    'ecpg.trailer',
+    'ecpg.type',
+]
+
+preproc_y = custom_target('preproc.y',
+  input: [
+    '../../../backend/parser/gram.y',
+    ecpg_files,
+  ],
+  output: ['preproc.y'],
+  command: [
+    perl, files('parse.pl'),
+    '--srcdir', '@CURRENT_SOURCE_DIR@',
+    '--parser', '@INPUT0@',
+    '--output', '@OUTPUT0@',
+  ],
+)
+
+check_rules = custom_target('preproc.y.check_rules',
+  input: [
+    '../../../backend/parser/gram.y',
+    ecpg_files,
+  ],
+  output: 'preproc.y.check_rules',
+  command: [
+    perl, files('check_rules.pl'),
+    '--srcdir', '@CURRENT_SOURCE_DIR@',
+    '--parser', '@INPUT0@',
+    '--stamp', '@OUTPUT0@',
+  ],
+)
+
+ecpg_sources += custom_target('preproc.c',
+  input: [preproc_y],
+  output: ['preproc.c', 'preproc.h'],
+  depends: check_rules,
+  command: [bison_cmd, '-d', '@INPUT@'],
+)
+
+ecpg_sources += custom_target('c_kwlist_d.h',
+  input: ['c_kwlist.h'],
+  output: ['c_kwlist_d.h'],
+  command: [
+    perl,
+    '-I', '@SOURCE_ROOT@/src/tools',
+    '@SOURCE_ROOT@/src/tools/gen_keywordlist.pl',
+    '--output', '@OUTDIR@',
+    '--varname', 'ScanCKeywords',
+    '--no-case-fold', '@INPUT0@'
+  ],
+)
+
+ecpg_sources += custom_target('ecpg_kwlist_d.h',
+  input: ['ecpg_kwlist.h'],
+  output: ['ecpg_kwlist_d.h'],
+  command: [
+    perl, '-I',
+    '@SOURCE_ROOT@/src/tools',
+    '@SOURCE_ROOT@/src/tools/gen_keywordlist.pl',
+    '--output', '@OUTDIR@',
+    '--varname', 'ScanECPGKeywords', '@INPUT0@',
+  ]
+)
+
+ecpg_exe = executable('ecpg',
+  ecpg_sources,
+  include_directories : ['.', ecpg_inc, postgres_inc],
+  dependencies: [frontend_shlib_code, libpq],
+  kwargs: default_bin_args,
+)
+
+subdir('po', if_found: libintl)
diff --git a/src/interfaces/ecpg/preproc/po/meson.build b/src/interfaces/ecpg/preproc/po/meson.build
new file mode 100644
index 00000000000..d73b05afd5e
--- /dev/null
+++ b/src/interfaces/ecpg/preproc/po/meson.build
@@ -0,0 +1 @@
+i18n.gettext('ecpg-' + pg_version_major.to_string())
diff --git a/src/interfaces/ecpg/test/compat_informix/meson.build b/src/interfaces/ecpg/test/compat_informix/meson.build
new file mode 100644
index 00000000000..17f12f1f36f
--- /dev/null
+++ b/src/interfaces/ecpg/test/compat_informix/meson.build
@@ -0,0 +1,31 @@
+pgc_files = [
+  'charfuncs',
+  'dec_test',
+  'describe',
+  'rfmtdate',
+  'rfmtlong',
+  'rnull',
+  'sqlda',
+  'test_informix',
+  'test_informix2',
+]
+
+pgc_extra_flags = {
+  'rnull': ['-r', 'no_indicator',],
+}
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start +
+      ['-C', 'INFORMIX',] +
+      pgc_extra_flags.get(pgc_file, []) +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/compat_oracle/meson.build b/src/interfaces/ecpg/test/compat_oracle/meson.build
new file mode 100644
index 00000000000..16830c041e2
--- /dev/null
+++ b/src/interfaces/ecpg/test/compat_oracle/meson.build
@@ -0,0 +1,18 @@
+pgc_files = [
+  'char_array',
+]
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start + 
+      ['-C', 'ORACLE',] +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/connect/meson.build b/src/interfaces/ecpg/test/connect/meson.build
new file mode 100644
index 00000000000..1ada499e1ff
--- /dev/null
+++ b/src/interfaces/ecpg/test/connect/meson.build
@@ -0,0 +1,22 @@
+
+pgc_files = [
+  'test1',
+  'test2',
+  'test3',
+  'test4',
+  'test5',
+]
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/meson.build b/src/interfaces/ecpg/test/meson.build
new file mode 100644
index 00000000000..3477c7a57ee
--- /dev/null
+++ b/src/interfaces/ecpg/test/meson.build
@@ -0,0 +1,75 @@
+# TODO: ECPG is not enabled for windows yet
+if host_system == 'win32'
+  subdir_done()
+endif
+
+pg_regress_ecpg_sources = pg_regress_c + files(
+  'pg_regress_ecpg.c',
+)
+
+pg_regress_ecpg = executable('pg_regress_ecpg',
+  pg_regress_ecpg_sources,
+  c_args: pg_regress_cflags,
+  include_directories: [pg_regress_inc, include_directories('.')],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args + {
+    'install': false
+  },
+)
+
+# create .c files and executables from .pgc files
+ecpg_test_exec_kw = {
+  'dependencies': [frontend_code, libpq],
+  'include_directories': [ecpg_inc],
+  'link_with': [ecpglib, ecpg_compat, ecpg_pgtypes],
+  'build_by_default': false,
+}
+
+ecpg_preproc_test_command_start = [
+  ecpg_exe, 
+  '--regression',
+  '-I@CURRENT_SOURCE_DIR@',
+  '-I@SOURCE_ROOT@' + '/src/interfaces/ecpg/include/',
+]
+ecpg_preproc_test_command_end = [
+  '-o', '@OUTPUT@', '@INPUT@'
+]
+
+ecpg_test_dependencies = []
+
+subdir('connect')
+subdir('sql')
+subdir('pgtypeslib')
+subdir('preproc')
+subdir('compat_informix')
+subdir('compat_oracle')
+subdir('thread')
+
+ecpg_test_files = files(
+  'ecpg_schedule',
+)
+
+ecpg_regress_args = [
+  '--dbname=ecpg1_regression,ecpg2_regression',
+  '--create-role=regress_ecpg_user1,regress_ecpg_user2',
+  '--encoding=SQL_ASCII',
+]
+
+tests += {
+  'name': 'ecpg',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'test_runner': pg_regress_ecpg,
+    'expecteddir': meson.current_source_dir(),
+    'inputdir': meson.current_build_dir(),
+    'schedule': ecpg_test_files,
+    'sql': [
+      'sql/twophase',
+    ],
+    'test_kwargs': {
+      'depends': ecpg_test_dependencies,
+      },
+    'regress_args': ecpg_regress_args,
+  },
+}
diff --git a/src/interfaces/ecpg/test/pgtypeslib/meson.build b/src/interfaces/ecpg/test/pgtypeslib/meson.build
new file mode 100644
index 00000000000..8f6120ca280
--- /dev/null
+++ b/src/interfaces/ecpg/test/pgtypeslib/meson.build
@@ -0,0 +1,21 @@
+pgc_files = [
+  'dt_test',
+  'dt_test2',
+  'num_test',
+  'num_test2',
+  'nan_test',
+]
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/preproc/meson.build b/src/interfaces/ecpg/test/preproc/meson.build
new file mode 100644
index 00000000000..7f912f50925
--- /dev/null
+++ b/src/interfaces/ecpg/test/preproc/meson.build
@@ -0,0 +1,38 @@
+
+pgc_files = [
+  'array_of_struct',
+  'autoprep',
+  'comment',
+  'cursor',
+  'define',
+  'init',
+  'outofscope',
+  'pointer_to_struct',
+  'strings',
+  'type',
+  'variable',
+  'whenever',
+  'whenever_do_continue',
+]
+
+pgc_extra_flags = {
+  'array_of_struct': ['-c'],
+  'pointer_to_struct' : ['-c'],
+  'autoprep': ['-r', 'prepare'],
+  'strings': ['-i'],
+}
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start +
+      pgc_extra_flags.get(pgc_file, []) +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/sql/meson.build b/src/interfaces/ecpg/test/sql/meson.build
new file mode 100644
index 00000000000..aaa18ddda42
--- /dev/null
+++ b/src/interfaces/ecpg/test/sql/meson.build
@@ -0,0 +1,46 @@
+pgc_files = [
+  'array',
+  'binary',
+  'bytea',
+  'code100',
+  'copystdout',
+  'createtableas',
+  'declare',
+  'define',
+  'desc',
+  'describe',
+  'dynalloc',
+  'dynalloc2',
+  'dyntest',
+  'execute',
+  'fetch',
+  'func',
+  'indicators',
+  'insupd',
+  'oldexec',
+  'parser',
+  'prepareas',
+  'quote',
+  'show',
+  'sqlda',
+  'twophase',
+]
+
+pgc_extra_flags = {
+  'oldexec': ['-r', 'questionmarks'],
+}
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start + 
+      pgc_extra_flags.get(pgc_file, []) +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw,
+  )
+endforeach
diff --git a/src/interfaces/ecpg/test/thread/meson.build b/src/interfaces/ecpg/test/thread/meson.build
new file mode 100644
index 00000000000..5e8c7cdf53c
--- /dev/null
+++ b/src/interfaces/ecpg/test/thread/meson.build
@@ -0,0 +1,21 @@
+pgc_files = [
+  'thread_implicit',
+  'thread',
+  'prep',
+  'descriptor',
+  'alloc',
+]
+
+foreach pgc_file: pgc_files
+  exe_input = custom_target(pgc_file,
+    input: '@0@.pgc'.format(pgc_file),
+    output: '@BASENAME@.c',
+    command: ecpg_preproc_test_command_start +
+      ecpg_preproc_test_command_end
+  )
+
+  ecpg_test_dependencies += executable(pgc_file,
+    exe_input,
+    kwargs: ecpg_test_exec_kw + {'dependencies': [frontend_code, libpq, thread_dep,]},
+  )
+endforeach
diff --git a/src/interfaces/meson.build b/src/interfaces/meson.build
new file mode 100644
index 00000000000..73fffbee394
--- /dev/null
+++ b/src/interfaces/meson.build
@@ -0,0 +1,2 @@
+# NB: libpq is entered directly from the toplevel meson file
+subdir('ecpg')
diff --git a/doc/src/sgml/meson.build b/doc/src/sgml/meson.build
new file mode 100644
index 00000000000..6cbdf95600b
--- /dev/null
+++ b/doc/src/sgml/meson.build
@@ -0,0 +1,242 @@
+alldocs = []
+doc_generated = []
+
+xmllint = find_program('xmllint', native: true, required: false)
+pandoc = find_program('pandoc', native: true, required: false)
+xsltproc = find_program('xsltproc', native: true, required: false)
+fop = find_program('fop', native: true, required: false)
+
+
+configure_file(
+  input: 'version.sgml.in',
+  output: 'version.sgml',
+  configuration: cdata,
+)
+
+doc_generated += custom_target('features-supported.sgml',
+  input: files(
+    '../../../src/backend/catalog/sql_feature_packages.txt',
+    '../../../src/backend/catalog/sql_features.txt'),
+  output: 'features-supported.sgml',
+  command: [perl, files('mk_feature_tables.pl'), 'YES', '@INPUT@'],
+  build_by_default: false,
+  install: false,
+  capture: true)
+
+doc_generated += custom_target('features-unsupported.sgml',
+  input: files(
+    '../../../src/backend/catalog/sql_feature_packages.txt',
+    '../../../src/backend/catalog/sql_features.txt'),
+  output: 'features-unsupported.sgml',
+  command: [perl, files('mk_feature_tables.pl'), 'NO', '@INPUT@'],
+  build_by_default: false,
+  install: false,
+  capture: true)
+
+doc_generated += custom_target('errcodes-table.sgml',
+  input: files(
+    '../../../src/backend/utils/errcodes.txt'),
+  output: 'errcodes-table.sgml',
+  command: [perl, files('generate-errcodes-table.pl'), '@INPUT@'],
+  build_by_default: false,
+  install: false,
+  capture: true)
+
+# FIXME: this actually has further inputs, adding depfile support to
+# generate-keywords-table.pl is probably the best way to address that
+# robustly.
+doc_generated += custom_target('keywords-table.sgml',
+  input: files(
+    '../../../src/include/parser/kwlist.h'),
+  output: 'keywords-table.sgml',
+  command: [perl, files('generate-keywords-table.pl'), '@CURRENT_SOURCE_DIR@'],
+  build_by_default: false,
+  install: false,
+  capture: true)
+
+# For everything else we need at least xmllint
+if not xmllint.found()
+  subdir_done()
+endif
+
+# Compute validity just once
+postgres_sgml_valid = custom_target('postgres.sgml.valid',
+  input: 'postgres.sgml',
+  output: 'postgres.sgml.valid',
+  command: [xmllint, '--noout', '--valid', '--path', '@OUTDIR@', '@INPUT@'],
+  depends: doc_generated,
+  build_by_default: true,
+  capture: true,
+)
+alldocs += postgres_sgml_valid
+
+
+#
+# Full documentation as html, text
+#
+if xsltproc.found()
+  xsltproc_flags = [
+    '--stringparam', 'pg.version', pg_version,
+    '--param', 'website.stylesheet', '1'
+  ]
+
+
+  # FIXME: Should use a wrapper around xsltproc --load-trace to compute a
+  # depfile
+  html = custom_target('html',
+    input: ['stylesheet.xsl', 'postgres.sgml'],
+    output: 'html',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTDIR@/', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += html
+
+
+  html_help = custom_target('html_help',
+    input: ['stylesheet-hh.xsl', 'postgres.sgml'],
+    output: 'htmlhelp',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTDIR@/', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += html_help
+
+
+  # single-page HTML
+  postgres_html = custom_target('postgres.html',
+    input: ['stylesheet-html-nochunk.xsl', 'postgres.sgml'],
+    output: 'postgres.html',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTPUT@', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += postgres_html
+
+  # single-page text
+  if pandoc.found()
+    postgres_txt = custom_target('postgres.txt',
+      input: [postgres_html],
+      output: 'postgres.txt',
+      depends: doc_generated + [postgres_sgml_valid],
+      command: [pandoc, '-t', 'plain', '-o', '@OUTPUT@', '@INPUT@'],
+      build_by_default: false,
+    )
+    alldocs += postgres_txt
+  endif
+endif
+
+
+#
+# INSTALL in html, text
+#
+if xsltproc.found()
+  install_xml = custom_target('INSTALL.xml',
+    input: ['standalone-profile.xsl', 'standalone-install.xml'],
+    output: 'INSTALL.xml',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTPUT@', xsltproc_flags, '--xinclude', '@INPUT@'],
+    build_by_default: false,
+  )
+  install_html = custom_target('INSTALL.html',
+    input: ['stylesheet-text.xsl', install_xml],
+    output: 'INSTALL.html',
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTPUT@', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += install_html
+
+  if pandoc.found()
+    # XXX: Makefile does an iconv translit here, but unclear why?
+    install = custom_target('INSTALL',
+      input: [install_html],
+      output: 'INSTALL',
+      depends: doc_generated + [postgres_sgml_valid],
+      command: [pandoc, '-t', 'plain', '-o', '@OUTPUT@', '@INPUT@'],
+      build_by_default: false,
+    )
+    alldocs += postgres_txt
+  endif
+
+endif
+
+
+#
+# Man pages
+#
+if xsltproc.found()
+  # FIXME: implement / consider sqlmansectnum logic
+  man = custom_target('man',
+    input: ['stylesheet-man.xsl', 'postgres.sgml'],
+    output: ['man1', 'man3', 'man7'],
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@', '-o', '@OUTDIR@', xsltproc_flags, '@INPUT@'],
+    build_by_default: false,
+  )
+endif
+
+
+#
+# Full documentation as PDF
+#
+if fop.found() and xsltproc.found()
+  xsltproc_fo_flags = xsltproc_flags + ['--stringparam', 'img.src.path', meson.current_source_dir() + '/']
+
+  foreach format, detail: {'A4': 'A4', 'US': 'USletter'}
+    postgres_x_fo_f = 'postgres-@0@.fo'.format(format)
+    postgres_x_pdf_f = 'postgres-@0@.pdf'.format(format)
+
+    postgres_x_fo = custom_target(postgres_x_fo_f,
+      input: ['stylesheet-fo.xsl', 'postgres.sgml'],
+      output: [postgres_x_fo_f],
+      depends: doc_generated + [postgres_sgml_valid],
+      command: [xsltproc, '--path', '@OUTDIR@/', xsltproc_fo_flags,
+                '--stringparam', 'paper.type', detail,
+                '-o', '@OUTPUT@', '@INPUT@'],
+      build_by_default: false,
+    )
+
+    postgres_x_pdf = custom_target(postgres_x_pdf_f,
+      input: [postgres_x_fo],
+      output: [postgres_x_pdf_f],
+      command: [fop, '-fo', '@INPUT@', '-pdf', '@OUTPUT@'],
+      build_by_default: false,
+    )
+    alldocs += postgres_x_pdf
+  endforeach
+endif
+
+
+#
+# epub
+#
+
+# This was previously implemented using dbtoepub - but that doesn't seem to
+# support running in build != source directory (i.e. VPATH builds already
+# weren't supported).
+if pandoc.found() and xsltproc.found()
+  # XXX: Wasn't able to make pandoc successfully resolve entities
+  # XXX: Perhaps we should just make all targets use this, to avoid repeatedly
+  # building whole thing? It's comparatively fast though.
+  postgres_full_xml = custom_target('postgres-full.xml',
+    input: ['resolv.xsl', 'postgres.sgml'],
+    output: ['postgres-full.xml'],
+    depends: doc_generated + [postgres_sgml_valid],
+    command: [xsltproc, '--path', '@OUTDIR@/', xsltproc_flags,
+              '-o', '@OUTPUT@', '@INPUT@'],
+    build_by_default: false,
+  )
+
+  postgres_epub = custom_target('postgres.epub',
+    input: [postgres_full_xml],
+    output: 'postgres.epub',
+    command: [pandoc, '-f', 'docbook', '-t', 'epub', '-o', '@OUTPUT@', '--resource-path=@CURRENT_SOURCE_DIR@',
+              '@INPUT@'],
+    build_by_default: false,
+  )
+  alldocs += postgres_epub
+endif
+
+
+alias_target('alldocs', alldocs)
diff --git a/doc/src/sgml/resolv.xsl b/doc/src/sgml/resolv.xsl
new file mode 100644
index 00000000000..c69ba714dab
--- /dev/null
+++ b/doc/src/sgml/resolv.xsl
@@ -0,0 +1,7 @@
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:template match="@*|node()">
+    <xsl:copy>
+      <xsl:apply-templates select="@*|node()"/>
+    </xsl:copy>
+  </xsl:template>
+</xsl:stylesheet>
diff --git a/doc/src/sgml/version.sgml.in b/doc/src/sgml/version.sgml.in
new file mode 100644
index 00000000000..fa5ff343f40
--- /dev/null
+++ b/doc/src/sgml/version.sgml.in
@@ -0,0 +1,2 @@
+<!ENTITY version @PG_VERSION@>
+<!ENTITY majorversion @PG_MAJORVERSION@>
diff --git a/src/test/authentication/meson.build b/src/test/authentication/meson.build
new file mode 100644
index 00000000000..2374028cbda
--- /dev/null
+++ b/src/test/authentication/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'authentication',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_password.pl',
+      't/002_saslprep.pl',
+    ],
+  },
+}
diff --git a/src/test/icu/meson.build b/src/test/icu/meson.build
new file mode 100644
index 00000000000..c78e71801fe
--- /dev/null
+++ b/src/test/icu/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'icu',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/010_database.pl',
+    ],
+    'env' : {'with_icu': icu.found() ? 'yes' : 'no'},
+  },
+}
diff --git a/src/test/isolation/meson.build b/src/test/isolation/meson.build
new file mode 100644
index 00000000000..d33f7a8f3d0
--- /dev/null
+++ b/src/test/isolation/meson.build
@@ -0,0 +1,51 @@
+# pg_regress_c helpfully provided by regress/meson.build
+
+isolation_sources = pg_regress_c + files(
+  'isolation_main.c',
+)
+
+# see src/backend/replication/meson.build for depend logic
+spec_scanner = custom_target('specscanner',
+  input : files('specscanner.l'),
+  output : ['specscanner.c'],
+  command : [flex_cmd, '@INPUT@'],
+)
+
+isolationtester_sources = files('isolationtester.c')
+isolationtester_sources += custom_target('specparse',
+  input: 'specparse.y',
+  output: 'specparse.c',
+  depends: spec_scanner,
+  command: [bison_cmd, '@INPUT@'],)
+
+pg_isolation_regress = executable('pg_isolation_regress',
+  isolation_sources,
+  c_args: pg_regress_cflags,
+  include_directories: [pg_regress_inc],
+  dependencies: [frontend_code],
+  kwargs: default_bin_args + {
+    'install_dir': dir_pgxs / 'src/test/isolation',
+  },
+)
+
+isolationtester = executable('isolationtester',
+  isolationtester_sources,
+  include_directories: include_directories('.'),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install_dir': dir_pgxs / 'src/test/isolation',
+  },
+)
+
+tests += {
+  'name': 'main',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'schedule': files('isolation_schedule'),
+    'test_kwargs': {
+      'priority': 40,
+      'timeout': 1000,
+    },
+  },
+}
diff --git a/src/test/kerberos/meson.build b/src/test/kerberos/meson.build
new file mode 100644
index 00000000000..572e387a0be
--- /dev/null
+++ b/src/test/kerberos/meson.build
@@ -0,0 +1,15 @@
+tests += {
+  'name': 'kerberos',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'test_kwargs': {'priority': 40}, # kerberos tests are slow, start early
+    'tests': [
+      't/001_auth.pl',
+    ],
+    'env' : {
+      'with_gssapi': gssapi.found() ? 'yes' : 'no',
+      'with_krb_srvnam': 'postgres',
+    },
+  },
+}
diff --git a/src/test/ldap/meson.build b/src/test/ldap/meson.build
new file mode 100644
index 00000000000..8a05b48147b
--- /dev/null
+++ b/src/test/ldap/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'ldap',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_auth.pl',
+    ],
+    'env' : {'with_ldap': ldap.found() ? 'yes' : 'no'},
+  },
+}
diff --git a/src/test/meson.build b/src/test/meson.build
new file mode 100644
index 00000000000..c620df338e0
--- /dev/null
+++ b/src/test/meson.build
@@ -0,0 +1,23 @@
+subdir('regress')
+subdir('isolation')
+
+subdir('authentication')
+subdir('recovery')
+subdir('subscription')
+subdir('modules')
+
+if ssl.found()
+   subdir('ssl')
+endif
+
+if ldap.found()
+   subdir('ldap')
+endif
+
+if gssapi.found()
+   subdir('kerberos')
+endif
+
+if icu.found()
+  subdir('icu')
+endif
diff --git a/src/test/modules/brin/meson.build b/src/test/modules/brin/meson.build
new file mode 100644
index 00000000000..fd402715aee
--- /dev/null
+++ b/src/test/modules/brin/meson.build
@@ -0,0 +1,15 @@
+tests += {
+  'name': 'brin',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'specs': [
+      'summarization-and-inprogress-insertion',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/01_workitems.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/commit_ts/meson.build b/src/test/modules/commit_ts/meson.build
new file mode 100644
index 00000000000..60cb12164d2
--- /dev/null
+++ b/src/test/modules/commit_ts/meson.build
@@ -0,0 +1,18 @@
+tests += {
+  'name': 'commit_ts',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'commit_timestamp',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_base.pl',
+      't/002_standby.pl',
+      't/003_standby_2.pl',
+      't/004_restart.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/delay_execution/meson.build b/src/test/modules/delay_execution/meson.build
new file mode 100644
index 00000000000..3ce0ee2e2f6
--- /dev/null
+++ b/src/test/modules/delay_execution/meson.build
@@ -0,0 +1,17 @@
+# FIXME: prevent install during main install, but not during test :/
+delay_execution = shared_module('delay_execution',
+  ['delay_execution.c'],
+  kwargs: pg_mod_args,
+)
+
+tests += {
+  'name': 'delay_execution',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'specs': [
+      'partition-addition',
+      'partition-removal-1',
+    ],
+  },
+}
diff --git a/src/test/modules/dummy_index_am/meson.build b/src/test/modules/dummy_index_am/meson.build
new file mode 100644
index 00000000000..77a4377dc21
--- /dev/null
+++ b/src/test/modules/dummy_index_am/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+dummy_index_am = shared_module('dummy_index_am',
+  ['dummy_index_am.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'dummy_index_am.control',
+  'dummy_index_am--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dummy_index_am',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'reloptions',
+    ],
+  },
+}
diff --git a/src/test/modules/dummy_seclabel/meson.build b/src/test/modules/dummy_seclabel/meson.build
new file mode 100644
index 00000000000..7d320eb7935
--- /dev/null
+++ b/src/test/modules/dummy_seclabel/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+dummy_seclabel = shared_module('dummy_seclabel',
+  ['dummy_seclabel.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'dummy_seclabel.control',
+  'dummy_seclabel--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'dummy_seclabel',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'dummy_seclabel',
+    ],
+  },
+}
diff --git a/src/test/modules/libpq_pipeline/meson.build b/src/test/modules/libpq_pipeline/meson.build
new file mode 100644
index 00000000000..fc07f77faf2
--- /dev/null
+++ b/src/test/modules/libpq_pipeline/meson.build
@@ -0,0 +1,20 @@
+libpq_pipeline = executable('libpq_pipeline',
+  files(
+    'libpq_pipeline.c',
+  ),
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install': false,
+  },
+)
+
+tests += {
+  'name': 'libpq_pipeline',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_libpq_pipeline.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/meson.build b/src/test/modules/meson.build
new file mode 100644
index 00000000000..eae91199487
--- /dev/null
+++ b/src/test/modules/meson.build
@@ -0,0 +1,26 @@
+subdir('brin')
+subdir('commit_ts')
+subdir('delay_execution')
+subdir('dummy_index_am')
+subdir('dummy_seclabel')
+subdir('libpq_pipeline')
+subdir('plsample')
+subdir('snapshot_too_old')
+subdir('spgist_name_ops')
+subdir('ssl_passphrase_callback')
+subdir('test_bloomfilter')
+subdir('test_ddl_deparse')
+subdir('test_extensions')
+subdir('test_ginpostinglist')
+subdir('test_integerset')
+subdir('test_misc')
+subdir('test_oat_hooks')
+subdir('test_parser')
+subdir('test_pg_dump')
+subdir('test_predtest')
+subdir('test_rbtree')
+subdir('test_regex')
+subdir('test_rls_hooks')
+subdir('test_shm_mq')
+subdir('unsafe_tests')
+subdir('worker_spi')
diff --git a/src/test/modules/plsample/meson.build b/src/test/modules/plsample/meson.build
new file mode 100644
index 00000000000..323427858f0
--- /dev/null
+++ b/src/test/modules/plsample/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+plsample = shared_module('plsample',
+  ['plsample.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'plsample.control',
+  'plsample--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'plsample',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'plsample',
+    ],
+  },
+}
diff --git a/src/test/modules/snapshot_too_old/meson.build b/src/test/modules/snapshot_too_old/meson.build
new file mode 100644
index 00000000000..efd3f1f113b
--- /dev/null
+++ b/src/test/modules/snapshot_too_old/meson.build
@@ -0,0 +1,14 @@
+tests += {
+  'name': 'snapshot_too_old',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'isolation': {
+    'test_kwargs': {'priority': 40}, # sto tests are slow, start early
+    'specs': [
+      'sto_using_cursor',
+      'sto_using_select',
+      'sto_using_hash_index',
+    ],
+    'regress_args': ['--temp-config', files('sto.conf')],
+  },
+}
diff --git a/src/test/modules/spgist_name_ops/meson.build b/src/test/modules/spgist_name_ops/meson.build
new file mode 100644
index 00000000000..676f2a258cb
--- /dev/null
+++ b/src/test/modules/spgist_name_ops/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+spgist_name_ops = shared_module('spgist_name_ops',
+  ['spgist_name_ops.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'spgist_name_ops.control',
+  'spgist_name_ops--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'spgist_name_ops',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'spgist_name_ops',
+    ],
+  },
+}
diff --git a/src/test/modules/ssl_passphrase_callback/meson.build b/src/test/modules/ssl_passphrase_callback/meson.build
new file mode 100644
index 00000000000..f5eba869980
--- /dev/null
+++ b/src/test/modules/ssl_passphrase_callback/meson.build
@@ -0,0 +1,47 @@
+if not ssl.found()
+  subdir_done()
+endif
+
+# FIXME: prevent install during main install, but not during test :/
+ssl_passphrase_callback = shared_module('ssl_passphrase_func',
+  ['ssl_passphrase_func.c'],
+  kwargs: pg_mod_args + {
+    'dependencies': [ssl, pg_mod_args['dependencies']],
+  }
+)
+
+# Targets to generate or remove the ssl certificate and key. Need to be copied
+# to the source afterwards. Normally not needed.
+
+openssl = find_program('openssl', native: true, required: false)
+
+if openssl.found()
+  cert = custom_target('server.crt',
+    output: ['server.crt', 'server.ckey'],
+    command: [openssl, 'req', '-new', '-x509', '-days', '10000', '-nodes', '-out', '@OUTPUT0@',
+      '-keyout', '@OUTPUT1@', '-subj', '/CN=localhost'],
+    build_by_default: false,
+    install: false,
+  )
+
+  # needs to agree with what's in the test script
+  pass = 'FooBaR1'
+
+  enccert = custom_target('server.key',
+    input: [cert[1]],
+    output: ['server.key'],
+    command: [openssl, 'rsa', '-aes256', '-in', '@INPUT0@', '-out', '@OUTPUT0@', '-passout', 'pass:@0@'.format(pass)]
+  )
+endif
+
+tests += {
+  'name': 'ssl_passphrase_callback',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_testfunc.pl',
+    ],
+    'env': {'with_ssl': 'openssl'},
+  },
+}
diff --git a/src/test/modules/test_bloomfilter/meson.build b/src/test/modules/test_bloomfilter/meson.build
new file mode 100644
index 00000000000..6861ae38116
--- /dev/null
+++ b/src/test/modules/test_bloomfilter/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_bloomfilter = shared_module('test_bloomfilter',
+  ['test_bloomfilter.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_bloomfilter.control',
+  'test_bloomfilter--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_bloomfilter',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_bloomfilter',
+    ],
+  },
+}
diff --git a/src/test/modules/test_ddl_deparse/meson.build b/src/test/modules/test_ddl_deparse/meson.build
new file mode 100644
index 00000000000..367730e95db
--- /dev/null
+++ b/src/test/modules/test_ddl_deparse/meson.build
@@ -0,0 +1,42 @@
+# FIXME: prevent install during main install, but not during test :/
+test_ddl_deparse = shared_module('test_ddl_deparse',
+  ['test_ddl_deparse.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_ddl_deparse.control',
+  'test_ddl_deparse--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_ddl_deparse',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_ddl_deparse',
+      'create_extension',
+      'create_schema',
+      'create_type',
+      'create_conversion',
+      'create_domain',
+      'create_sequence_1',
+      'create_table',
+      'create_transform',
+      'alter_table',
+      'create_view',
+      'create_trigger',
+      'create_rule',
+      'comment_on',
+      'alter_function',
+      'alter_sequence',
+      'alter_ts_config',
+      'alter_type_enum',
+      'opfamily',
+      'defprivs',
+      'matviews',
+    ],
+  },
+}
diff --git a/src/test/modules/test_extensions/meson.build b/src/test/modules/test_extensions/meson.build
new file mode 100644
index 00000000000..93d75a64b64
--- /dev/null
+++ b/src/test/modules/test_extensions/meson.build
@@ -0,0 +1,40 @@
+# FIXME: prevent install during main install, but not during test :/
+install_data(
+  'test_ext1--1.0.sql',
+  'test_ext1.control',
+  'test_ext2--1.0.sql',
+  'test_ext2.control',
+  'test_ext3--1.0.sql',
+  'test_ext3.control',
+  'test_ext4--1.0.sql',
+  'test_ext4.control',
+  'test_ext5--1.0.sql',
+  'test_ext5.control',
+  'test_ext6--1.0.sql',
+  'test_ext6.control',
+  'test_ext7--1.0--2.0.sql',
+  'test_ext7--1.0.sql',
+  'test_ext7.control',
+  'test_ext8--1.0.sql',
+  'test_ext8.control',
+  'test_ext_cyclic1--1.0.sql',
+  'test_ext_cyclic1.control',
+  'test_ext_cyclic2--1.0.sql',
+  'test_ext_cyclic2.control',
+  'test_ext_evttrig--1.0--2.0.sql',
+  'test_ext_evttrig--1.0.sql',
+  'test_ext_evttrig.control',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_extensions',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_extensions',
+      'test_extdepend',
+    ],
+  },
+}
diff --git a/src/test/modules/test_ginpostinglist/meson.build b/src/test/modules/test_ginpostinglist/meson.build
new file mode 100644
index 00000000000..193c28a3da9
--- /dev/null
+++ b/src/test/modules/test_ginpostinglist/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_ginpostinglist = shared_module('test_ginpostinglist',
+  ['test_ginpostinglist.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_ginpostinglist.control',
+  'test_ginpostinglist--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_ginpostinglist',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_ginpostinglist',
+    ],
+  },
+}
diff --git a/src/test/modules/test_integerset/meson.build b/src/test/modules/test_integerset/meson.build
new file mode 100644
index 00000000000..b599dfc09e2
--- /dev/null
+++ b/src/test/modules/test_integerset/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_integerset = shared_module('test_integerset',
+  ['test_integerset.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_integerset.control',
+  'test_integerset--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_integerset',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_integerset',
+    ],
+  },
+}
diff --git a/src/test/modules/test_misc/meson.build b/src/test/modules/test_misc/meson.build
new file mode 100644
index 00000000000..cfc830ff399
--- /dev/null
+++ b/src/test/modules/test_misc/meson.build
@@ -0,0 +1,12 @@
+tests += {
+  'name': 'test_misc',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'tests': [
+      't/001_constraint_validation.pl',
+      't/002_tablespace.pl',
+      't/003_check_guc.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/test_oat_hooks/meson.build b/src/test/modules/test_oat_hooks/meson.build
new file mode 100644
index 00000000000..9b20e7c56d4
--- /dev/null
+++ b/src/test/modules/test_oat_hooks/meson.build
@@ -0,0 +1,17 @@
+# FIXME: prevent install during main install, but not during test :/
+test_oat_hooks = shared_module('test_oat_hooks',
+  ['test_oat_hooks.c'],
+  kwargs: pg_mod_args,
+)
+
+tests += {
+  'name': 'test_oat_hooks',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_oat_hooks',
+    ],
+    'regress_args': ['--no-locale', '--encoding=UTF8'],
+  },
+}
diff --git a/src/test/modules/test_parser/meson.build b/src/test/modules/test_parser/meson.build
new file mode 100644
index 00000000000..35ee6ce324b
--- /dev/null
+++ b/src/test/modules/test_parser/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_parser = shared_module('test_parser',
+  ['test_parser.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_parser.control',
+  'test_parser--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_parser',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_parser',
+    ],
+  },
+}
diff --git a/src/test/modules/test_pg_dump/meson.build b/src/test/modules/test_pg_dump/meson.build
new file mode 100644
index 00000000000..41021829f3a
--- /dev/null
+++ b/src/test/modules/test_pg_dump/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+install_data(
+  'test_pg_dump.control',
+  'test_pg_dump--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_pg_dump',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_pg_dump',
+    ],
+  },
+  'tap': {
+    'tests': [
+      't/001_base.pl',
+    ],
+  },
+}
diff --git a/src/test/modules/test_predtest/meson.build b/src/test/modules/test_predtest/meson.build
new file mode 100644
index 00000000000..001c2d848bb
--- /dev/null
+++ b/src/test/modules/test_predtest/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_predtest = shared_module('test_predtest',
+  ['test_predtest.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_predtest.control',
+  'test_predtest--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_predtest',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_predtest',
+    ],
+  },
+}
diff --git a/src/test/modules/test_rbtree/meson.build b/src/test/modules/test_rbtree/meson.build
new file mode 100644
index 00000000000..963a6220a2a
--- /dev/null
+++ b/src/test/modules/test_rbtree/meson.build
@@ -0,0 +1,22 @@
+# FIXME: prevent install during main install, but not during test :/
+test_rbtree = shared_module('test_rbtree',
+  ['test_rbtree.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_rbtree.control',
+  'test_rbtree--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_rbtree',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_rbtree',
+    ],
+  },
+}
diff --git a/src/test/modules/test_regex/meson.build b/src/test/modules/test_regex/meson.build
new file mode 100644
index 00000000000..61217dd2ca4
--- /dev/null
+++ b/src/test/modules/test_regex/meson.build
@@ -0,0 +1,23 @@
+# FIXME: prevent install during main install, but not during test :/
+test_regex = shared_module('test_regex',
+  ['test_regex.c'],
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_regex.control',
+  'test_regex--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_regex',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_regex',
+      'test_regex_utf8',
+    ],
+  },
+}
diff --git a/src/test/modules/test_rls_hooks/meson.build b/src/test/modules/test_rls_hooks/meson.build
new file mode 100644
index 00000000000..3f49b8ff540
--- /dev/null
+++ b/src/test/modules/test_rls_hooks/meson.build
@@ -0,0 +1,16 @@
+# FIXME: prevent install during main install, but not during test :/
+test_rls_hooks = shared_module('test_rls_hooks',
+  ['test_rls_hooks.c'],
+  kwargs: pg_mod_args,
+)
+
+tests += {
+  'name': 'test_rls_hooks',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_rls_hooks',
+    ],
+  },
+}
diff --git a/src/test/modules/test_shm_mq/meson.build b/src/test/modules/test_shm_mq/meson.build
new file mode 100644
index 00000000000..9a0f83917a5
--- /dev/null
+++ b/src/test/modules/test_shm_mq/meson.build
@@ -0,0 +1,26 @@
+# FIXME: prevent install during main install, but not during test :/
+test_shm_mq = shared_module('test_shm_mq',
+  files(
+    'setup.c',
+    'test.c',
+    'worker.c',
+  ),
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'test_shm_mq.control',
+  'test_shm_mq--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'test_shm_mq',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'test_shm_mq',
+    ],
+  },
+}
diff --git a/src/test/modules/unsafe_tests/meson.build b/src/test/modules/unsafe_tests/meson.build
new file mode 100644
index 00000000000..d69b0e7ce44
--- /dev/null
+++ b/src/test/modules/unsafe_tests/meson.build
@@ -0,0 +1,11 @@
+tests += {
+  'name': 'unsafe_tests',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'rolenames',
+      'alter_system_table',
+    ],
+  },
+}
diff --git a/src/test/modules/worker_spi/meson.build b/src/test/modules/worker_spi/meson.build
new file mode 100644
index 00000000000..b729c354827
--- /dev/null
+++ b/src/test/modules/worker_spi/meson.build
@@ -0,0 +1,25 @@
+# FIXME: prevent install during main install, but not during test :/
+test_worker_spi = shared_module('worker_spi',
+  files(
+    'worker_spi.c',
+  ),
+  kwargs: pg_mod_args,
+)
+
+install_data(
+  'worker_spi.control',
+  'worker_spi--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'worker_spi',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'worker_spi',
+    ],
+    'regress_args': ['--temp-config', files('dynamic.conf'), '--dbname=contrib_regression'],
+  },
+}
diff --git a/src/test/recovery/meson.build b/src/test/recovery/meson.build
new file mode 100644
index 00000000000..68f316d994e
--- /dev/null
+++ b/src/test/recovery/meson.build
@@ -0,0 +1,42 @@
+tests += {
+  'name': 'recovery',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'test_kwargs': {'priority': 40}, # recovery tests are slow, start early
+    'tests' : [
+      't/001_stream_rep.pl',
+      't/002_archiving.pl',
+      't/003_recovery_targets.pl',
+      't/004_timeline_switch.pl',
+      't/005_replay_delay.pl',
+      't/006_logical_decoding.pl',
+      't/007_sync_rep.pl',
+      't/008_fsm_truncation.pl',
+      't/009_twophase.pl',
+      't/010_logical_decoding_timelines.pl',
+      't/011_crash_recovery.pl',
+      't/012_subtransactions.pl',
+      't/013_crash_restart.pl',
+      't/014_unlogged_reinit.pl',
+      't/015_promotion_pages.pl',
+      't/016_min_consistency.pl',
+      't/017_shm.pl',
+      't/018_wal_optimize.pl',
+      't/019_replslot_limit.pl',
+      't/020_archive_status.pl',
+      't/021_row_visibility.pl',
+      't/022_crash_temp_files.pl',
+      't/023_pitr_prepared_xact.pl',
+      't/024_archive_recovery.pl',
+      't/025_stuck_on_old_timeline.pl',
+      't/026_overwrite_contrecord.pl',
+      't/027_stream_regress.pl',
+      't/028_pitr_timelines.pl',
+      't/029_stats_restart.pl',
+      't/030_stats_cleanup_replica.pl',
+      't/031_recovery_conflict.pl',
+      't/032_relfilenode_reuse.pl',
+    ],
+  },
+}
diff --git a/src/test/regress/meson.build b/src/test/regress/meson.build
new file mode 100644
index 00000000000..e2ee50504a9
--- /dev/null
+++ b/src/test/regress/meson.build
@@ -0,0 +1,58 @@
+# also used by isolationtester and ecpg tests
+pg_regress_c = files('pg_regress.c')
+pg_regress_inc = include_directories('.')
+
+regress_sources = pg_regress_c + files(
+  'pg_regress_main.c'
+)
+
+pg_regress_cflags = ['-DHOST_TUPLE="frak"', '-DSHELLPROG="/bin/sh"']
+
+pg_regress = executable('pg_regress',
+  regress_sources,
+  c_args: pg_regress_cflags,
+  dependencies: [frontend_code, libpq],
+  kwargs: default_bin_args + {
+    'install_dir': dir_pgxs / 'src/test/regress',
+  },
+)
+
+regress_module = shared_module('regress',
+  ['regress.c'],
+  kwargs: pg_mod_args + {
+    'install': false,
+  },
+)
+
+# Get some extra C modules from contrib/spi but mark them as not to be
+# installed.
+# FIXME: avoid the duplication.
+
+shared_module('autoinc',
+  ['../../../contrib/spi/autoinc.c'],
+  kwargs: pg_mod_args + {
+    'install': false,
+  },
+)
+
+shared_module('refint',
+  ['../../../contrib/spi/refint.c'],
+  kwargs: pg_mod_args + {
+    'c_args': refint_cflags + contrib_mod_args['c_args'],
+    'install': false,
+  },
+)
+
+
+tests += {
+  'name': 'main',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'schedule': files('parallel_schedule'),
+    'test_kwargs': {
+      'priority': 50,
+      'timeout': 1000,
+    },
+  },
+}
diff --git a/src/test/ssl/meson.build b/src/test/ssl/meson.build
new file mode 100644
index 00000000000..7930170f013
--- /dev/null
+++ b/src/test/ssl/meson.build
@@ -0,0 +1,13 @@
+tests += {
+  'name': 'ssl',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env' : {'with_ssl': get_option('ssl')},
+    'tests': [
+      't/001_ssltests.pl',
+      't/002_scram.pl',
+      't/003_sslinfo.pl',
+    ],
+  },
+}
diff --git a/src/test/subscription/meson.build b/src/test/subscription/meson.build
new file mode 100644
index 00000000000..ebd4e48a105
--- /dev/null
+++ b/src/test/subscription/meson.build
@@ -0,0 +1,41 @@
+tests += {
+  'name': 'subscription',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'tap': {
+    'env' : {'with_icu': icu.found() ? 'yes' : 'no'},
+    'tests': [
+      't/001_rep_changes.pl',
+      't/002_types.pl',
+      't/003_constraints.pl',
+      't/004_sync.pl',
+      't/005_encoding.pl',
+      't/006_rewrite.pl',
+      't/007_ddl.pl',
+      't/008_diff_schema.pl',
+      't/009_matviews.pl',
+      't/010_truncate.pl',
+      't/011_generated.pl',
+      't/012_collation.pl',
+      't/013_partition.pl',
+      't/014_binary.pl',
+      't/015_stream.pl',
+      't/016_stream_subxact.pl',
+      't/017_stream_ddl.pl',
+      't/018_stream_subxact_abort.pl',
+      't/019_stream_subxact_ddl_abort.pl',
+      't/020_messages.pl',
+      't/021_twophase.pl',
+      't/022_twophase_cascade.pl',
+      't/023_twophase_stream.pl',
+      't/024_add_drop_pub.pl',
+      't/025_rep_changes_for_schema.pl',
+      't/026_stats.pl',
+      't/027_nosuperuser.pl',
+      't/028_row_filter.pl',
+      't/029_on_error.pl',
+      't/031_column_list.pl',
+      't/100_bugs.pl',
+    ],
+  },
+}
diff --git a/configure b/configure
index ae0aa991407..050d08444d7 100755
--- a/configure
+++ b/configure
@@ -21338,3 +21338,9 @@ if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
 $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
 
+
+# Ensure that any meson build directories would reconfigure and see that
+# there's a conflicting in-tree build and can error out.
+if test "$vpath_build"="no"; then
+  touch meson.build
+fi
diff --git a/configure.ac b/configure.ac
index 459ae04b446..0755afffa0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2588,3 +2588,9 @@ AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
                   [echo >src/interfaces/ecpg/include/stamp-h])
 
 AC_OUTPUT
+
+# Ensure that any meson build directories would reconfigure and see that
+# there's a conflicting in-tree build and can error out.
+if test "$vpath_build"="no"; then
+  touch meson.build
+fi
diff --git a/conversion_helpers.txt b/conversion_helpers.txt
new file mode 100644
index 00000000000..b94ade57309
--- /dev/null
+++ b/conversion_helpers.txt
@@ -0,0 +1,9 @@
+convert list of files to quoted-one-per-line:
+
+	?\b\(\(?:\w\|\d\|_\|-\)+\)\.o ?\(?:\\
+\)? â   '\1.c',
+
+
+# check if all tap tests are known to meson
+m test --list > /tmp/tests.txt
+for f in $(git ls-files|grep 't/.*.pl$'|sort);do t=$(echo $f|sed -E -e 's/^.*\/(.*\/(t|test)\/.*)$/\1/');grep -q -L $t /tmp/tests.txt || echo $f;done
diff --git a/meson.build b/meson.build
new file mode 100644
index 00000000000..9f513de6b62
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,2921 @@
+project('postgresql',
+  ['c'],
+  version: '16devel',
+  license: 'PostgreSQL',
+
+  # We want < 0.56 for python 3.5 compatibility on old platforms. EPEL for
+  # RHEL 7 has 0.55. < 0.54 would require replacing some uses of the fs
+  # module, < 0.53 all uses of fs. So far there's no need to go to >=0.56.
+  meson_version: '>=0.54',
+  default_options: [
+    'warning_level=2',
+    'b_pie=true',
+    'b_pch=false',
+    'buildtype=release',
+  ]
+)
+
+
+
+###############################################################
+# Basic prep
+###############################################################
+
+host_system = host_machine.system() == 'windows' ? 'win32' : host_machine.system()
+build_system = build_machine.system() == 'windows' ? 'win32' : build_machine.system()
+
+host_cpu = host_machine.cpu_family()
+build_cpu = build_machine.cpu_family()
+
+fs = import('fs')
+pkgconfig = import('pkgconfig')
+if host_system == 'win32'
+  windows = import('windows')
+endif
+
+thread_dep = dependency('threads')
+
+
+# It's very easy to get into confusing states when the source directory
+# contains an in-place build. E.g. the wrong pg_config.h will be used. So just
+# refuse to build in that case.
+if fs.exists(meson.current_source_dir() / 'src' / 'include' / 'pg_config.h')
+  error('''
+****
+Non-clean source code directory detected.
+
+To build with meson the source tree may not have an in-place, ./configure
+style, build configured. Use a separate check out for meson based builds, or
+run make distclean in the source tree.
+
+You can have both meson and ./configure style builds for the same source tree
+by building out-of-source / VPATH with configure as well.
+****
+''')
+endif
+
+
+
+###############################################################
+# Version and other metadata
+###############################################################
+
+pg_version = meson.project_version()
+
+if pg_version.endswith('devel')
+  pg_version_arr = [pg_version.split('devel')[0], '0']
+elif pg_version.contains('beta')
+  pg_version_arr = [pg_version.split('beta')[0], '0']
+elif pg_version.contains('rc')
+  pg_version_arr = [pg_version.split('rc')[0], '0']
+else
+  pg_version_arr = pg_version.split('.')
+endif
+
+pg_version_major = pg_version_arr[0].to_int()
+pg_version_minor = pg_version_arr[1].to_int()
+pg_version_num = (pg_version_major*10000)+pg_version_minor
+
+cc = meson.get_compiler('c')
+
+cdata = configuration_data()
+
+pg_url = 'https://www.postgresql.org/'
+
+cdata.set_quoted('PACKAGE_NAME', 'PostgreSQL')
+cdata.set_quoted('PACKAGE_BUGREPORT', 'pgsql-bugs@lists.postgresql.org')
+cdata.set_quoted('PACKAGE_URL', pg_url)
+cdata.set_quoted('PACKAGE_VERSION', pg_version)
+
+pg_version += get_option('extra_version')
+cdata.set_quoted('PG_VERSION', pg_version)
+cdata.set_quoted('PG_VERSION_STR', 'PostgreSQL @0@ on @1@, compiled by @2@-@3@'.format(
+  pg_version, build_cpu, cc.get_id(), cc.version()))
+cdata.set_quoted('PG_MAJORVERSION', pg_version_major.to_string())
+cdata.set('PG_MAJORVERSION_NUM', pg_version_major)
+cdata.set('PG_MINORVERSION_NUM', pg_version_minor)
+cdata.set('PG_VERSION_NUM', pg_version_num)
+cdata.set_quoted('CONFIGURE_ARGS', '')
+
+
+
+###############################################################
+# Search paths
+#
+# NB: Arguments added globally (via the below, or CFLAGS etc) are not taken
+# into account for configuration-time checks (so they are more
+# isolated). Flags that have to be taken into account for configure checks
+# have to be explicitly specified in configure tests.
+###############################################################
+
+g_c_args = []
+g_c_inc = []
+g_l_args = []
+
+if host_system == 'darwin'
+  # XXX, should this be required?
+  xcrun = find_program('xcrun', native: true, required: true)
+
+  sysroot = run_command(xcrun, '--show-sdk-path', check: true).stdout().strip()
+  message('sysroot is >@0@<'.format(sysroot))
+
+  g_c_args += ['-isysroot', sysroot]
+  g_l_args += ['-isysroot', sysroot]
+endif
+
+if host_system == 'linux' or host_system == 'cygwin'
+  g_c_args += '-D_GNU_SOURCE'
+endif
+
+
+g_c_inc += include_directories(get_option('extra_include_dirs'))
+g_c_lib = get_option('extra_lib_dirs')
+
+# cbflags is for compiler flags used for both C and C++
+cbflags = g_c_args
+cflags = []
+cxxflags = []
+ldflags = g_l_args
+
+postgres_inc = [include_directories('src/include')]
+
+# Windows replacement headers - need them to be usable during the feature
+# tests below.
+if host_system == 'win32'
+  win32_inc = include_directories('src/include/port/win32')
+  g_c_inc += win32_inc
+  postgres_inc += win32_inc
+
+  if cc.get_id() == 'msvc'
+    win32_msvc_inc = include_directories('src/include/port/win32_msvc')
+    g_c_inc += win32_msvc_inc
+    postgres_inc += win32_msvc_inc
+  endif
+endif
+
+g_c_inc += postgres_inc
+
+
+
+###############################################################
+# Program paths
+###############################################################
+
+# External programs
+perl = find_program(get_option('PERL'), required: true)
+python = find_program(get_option('PYTHON'), required: true)
+flex = find_program(get_option('FLEX'), native: true)
+bison = find_program(get_option('BISON'), native: true, version: '>= 1.875')
+sed = find_program(get_option('SED'), 'sed', native: true)
+prove = find_program(get_option('PROVE'))
+tar = find_program(get_option('TAR'), native: true)
+gzip = find_program(get_option('GZIP'), native: true)
+program_lz4 = find_program(get_option('LZ4'), native: true, required: false)
+touch = find_program('touch', native: true)
+program_zstd = find_program(get_option('ZSTD'), native: true, required: false)
+dtrace = find_program(get_option('DTRACE'), required: get_option('dtrace'))
+
+# Internal programs
+testwrap = find_program('src/tools/testwrap', native: true)
+
+# used by PGXS
+install_sh = find_program('config/install-sh', native: true)
+
+bison_flags = []
+if bison.found()
+  bison_version_c = run_command(bison, '--version', check: true)
+  # bison version string helpfully is something like
+  # >>bison (GNU bison) 3.8.1<<
+  bison_version = bison_version_c.stdout().split(' ')[3].split('\n')[0]
+  if bison_version.version_compare('>=3.0')
+    bison_flags += ['-Wno-deprecated']
+  endif
+endif
+bison_cmd = [bison, bison_flags, '-o', '@OUTPUT0@']
+
+flex_flags = []
+flex_wrapper = files('src/tools/pgflex')
+flex_cmd = [python, flex_wrapper, '--builddir', meson.build_root(),
+ '--privatedir', '@PRIVATE_DIR@', '--flex', flex, '-o', '@OUTPUT0@']
+
+flex_backup = ['-b']
+flex_fix_warning_script = files('src/tools/fix-old-flex-code.pl')
+flex_fix_warning = ['--perl', perl, '--fix_warning_script', flex_fix_warning_script]
+
+wget = find_program('wget', required: false, native: true)
+wget_flags = ['-O', '@OUTPUT0@', '--no-use-server-timestamps']
+
+
+
+###############################################################
+# Path to meson (for tests etc)
+###############################################################
+
+# FIXME: this should really be part of meson, see
+# https://github.com/mesonbuild/meson/issues/8511
+meson_binpath_r = run_command(python, 'src/tools/find_meson', check: true)
+
+if meson_binpath_r.returncode() != 0 or meson_binpath_r.stdout() == ''
+  error('huh, could not run find_meson.\nerrcode: @0@\nstdout: @1@\nstderr: @2@'.format(
+    meson_binpath_r.returncode(),
+    meson_binpath_r.stdout(),
+    meson_binpath_r.stderr()))
+endif
+
+meson_binpath_s = meson_binpath_r.stdout().split('\n')
+meson_binpath_len = meson_binpath_s.length()
+
+if meson_binpath_len < 1
+  error('unexpected introspect line @0@'.format(meson_binpath_r.stdout()))
+endif
+
+i = 0
+meson_binpath = ''
+meson_args = []
+foreach e : meson_binpath_s
+  if i == 0
+    meson_binpath = e
+  else
+    meson_args += e
+  endif
+  i += 1
+endforeach
+
+meson_bin = find_program(meson_binpath, native: true)
+
+
+
+###############################################################
+# Option Handling
+###############################################################
+
+cdata.set('USE_ASSERT_CHECKING', get_option('cassert') ? 1 : false)
+
+cdata.set('BLCKSZ', 8192, description:
+'''Size of a disk block --- this also limits the size of a tuple. You can set
+   it bigger if you need bigger tuples (although TOAST should reduce the need
+   to have large tuples, since fields can be spread across multiple tuples).
+   BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ is
+   currently 2^15 (32768). This is determined by the 15-bit widths of the
+   lp_off and lp_len fields in ItemIdData (see include/storage/itemid.h).
+   Changing BLCKSZ requires an initdb.''')
+
+cdata.set('XLOG_BLCKSZ', get_option('wal-blocksize') * 1024)
+cdata.set('RELSEG_SIZE', get_option('segsize') * 131072)
+cdata.set('DEF_PGPORT', get_option('pgport'))
+cdata.set_quoted('DEF_PGPORT_STR', get_option('pgport'))
+cdata.set_quoted('PG_KRB_SRVNAM', get_option('krb-srvnam'))
+if get_option('system-tzdata') != ''
+  cdata.set_quoted('SYSTEMTZDIR', get_option('system-tzdata'))
+endif
+
+
+
+###############################################################
+# Directories
+###############################################################
+
+# These are set by the equivalent --xxxdir configure options.  We
+# append "postgresql" to some of them, if the string does not already
+# contain "pgsql" or "postgres", in order to avoid directory clutter.
+
+pkg = 'postgresql'
+
+dir_prefix = get_option('prefix')
+
+dir_bin = get_option('bindir')
+
+dir_data = get_option('datadir')
+if not (dir_data.contains('pgsql') or dir_data.contains('postgres'))
+  dir_data = dir_data / pkg
+endif
+
+dir_sysconf = get_option('sysconfdir')
+if not (dir_sysconf.contains('pgsql') or dir_sysconf.contains('postgres'))
+  dir_sysconf = dir_sysconf / pkg
+endif
+
+dir_lib = get_option('libdir')
+
+dir_lib_pkg = dir_lib
+if not (dir_lib_pkg.contains('pgsql') or dir_lib_pkg.contains('postgres'))
+  dir_lib_pkg = dir_lib_pkg / pkg
+endif
+
+dir_pgxs = dir_lib_pkg / 'pgxs'
+
+dir_include = get_option('includedir')
+
+dir_include_pkg = dir_include
+if not (dir_include_pkg.contains('pgsql') or dir_include_pkg.contains('postgres'))
+  dir_include_pkg = dir_include_pkg / pkg
+endif
+
+dir_man = get_option('mandir')
+
+# FIXME: These used to be separately configurable - worth adding?
+dir_doc = get_option('datadir') / 'doc' / 'postgresql'
+dir_doc_html = dir_doc
+
+dir_locale = get_option('localedir')
+
+
+# Derived values
+dir_bitcode = dir_lib_pkg / 'bitcode'
+dir_include_internal = dir_include_pkg / 'internal'
+dir_include_server = dir_include_pkg / 'server'
+dir_include_extension = dir_include_server / 'extension'
+dir_data_extension = dir_data / 'extension'
+
+
+
+###############################################################
+# Library: bsd-auth
+###############################################################
+
+bsd_authopt = get_option('bsd-auth')
+bsd_auth = dependency('', required: false)
+if cc.check_header('bsd_auth.h', args: g_c_args, required: bsd_authopt)
+  cdata.set('USE_BSD_AUTH', 1)
+  bsd_auth = declare_dependency()
+endif
+
+
+
+###############################################################
+# Library: bonjour
+#
+# For now don't search for DNSServiceRegister in a library - only Apple's
+# Bonjour implementation, which is always linked, works.
+###############################################################
+
+bonjouropt = get_option('bonjour')
+bonjour = dependency('', required : false)
+if cc.check_header('dns_sd.h', args: g_c_args, required: bonjouropt) \
+  and cc.has_function('DNSServiceRegister', args: g_c_args)
+  cdata.set('USE_BONJOUR', 1)
+  bonjour = declare_dependency()
+endif
+
+
+
+###############################################################
+# Library: GSSAPI
+###############################################################
+
+gssapiopt = get_option('gssapi')
+krb_srvtab = ''
+if not gssapiopt.disabled()
+  gssapi = dependency('krb5-gssapi', required: gssapiopt)
+
+  if gssapi.found() and \
+    cc.check_header('gssapi/gssapi.h', args: g_c_args, dependencies: gssapi, required: gssapiopt)
+
+    if cc.has_function('gss_init_sec_context',
+      include_directories: g_c_inc, args: g_c_args, dependencies: gssapi)
+      cdata.set('ENABLE_GSS', 1)
+
+      krb_srvtab = 'FILE:/@0@/krb5.keytab)'.format(get_option('sysconfdir'))
+      cdata.set_quoted('PG_KRB_SRVTAB', krb_srvtab)
+    elif gssapiopt.enabled()
+      error('''could not find function 'gss_init_sec_context' required for GSSAPI''')
+    else
+      gssapi = dependency('', required : false)
+    endif
+  endif
+
+else
+  gssapi = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: ldap
+###############################################################
+
+ldapopt = get_option('ldap')
+if not ldapopt.disabled()
+
+  if host_system == 'win32'
+    ldap = cc.find_library('wldap32')
+    ldap_r = ldap
+  else
+    # macos framework dependency is buggy for ldap (one can argue
+    # whether it's Apple's or meson's fault), leading to an endless
+    # recursion with ldap.h including itself. See
+    # https://github.com/mesonbuild/meson/issues/10002
+    # Luckily we only need pkg-config support, so the workaround isn't
+    # too complicated
+    ldap = dependency('ldap', method: 'pkg-config', required: false)
+
+    # Before 2.5 openldap didn't have a pkg-config file..
+    if ldap.found()
+      ldap_r = ldap
+    else
+      ldap = cc.find_library('ldap', required: ldapopt, dirs: g_c_lib)
+      ldap_r = cc.find_library('ldap_r', required: ldapopt, dirs: g_c_lib)
+
+      # Use ldap_r for FE if available, else assume ldap is thread-safe.
+      # On some platforms ldap_r fails to link without PTHREAD_LIBS.
+      if ldap.found() and not ldap_r.found()
+        ldap_r = ldap
+      endif
+    endif
+
+    if ldap.found() and cc.has_function('ldap_initialize', args: g_c_args, dependencies: [ldap, thread_dep])
+      cdata.set('HAVE_LDAP_INITIALIZE', 1)
+    endif
+
+    # If found via cc.find_library() ensure headers are found when using the
+    # dependency. On meson < 0.57 one cannot do compiler checks using the
+    # dependency returned by declare_dependency(), so we can't do this above.
+    if ldap.found() and ldap.type_name() == 'library'
+      # declare dependency so that the additional include dir it might reside in
+      # is added automatically where necessary
+      ldap = declare_dependency(dependencies: ldap,
+        include_directories: g_c_inc)
+      ldap_r = declare_dependency(dependencies: ldap_r,
+        include_directories: g_c_inc)
+    endif
+  endif
+
+  if ldap.found()
+    cdata.set('USE_LDAP', 1)
+  endif
+
+else
+  ldap = dependency('', required : false)
+  ldap_r = ldap
+endif
+
+
+
+###############################################################
+# Library: LLVM
+###############################################################
+
+llvmopt = get_option('llvm')
+if not llvmopt.disabled()
+  add_languages('cpp', required : true, native: false)
+  llvm = dependency('llvm', version : '>=3.9', method: 'config-tool', required: llvmopt)
+
+  if llvm.found()
+
+    cdata.set('USE_LLVM', 1)
+
+    cpp = meson.get_compiler('cpp')
+
+    llvm_binpath = llvm.get_variable(configtool: 'bindir')
+
+    ccache = find_program('ccache', required: false)
+    clang = find_program(llvm_binpath / 'clang', required: true)
+    llvm_lto = find_program(llvm_binpath / 'llvm-lto', required: true)
+
+    # FIXME: the includes hardcoded here suck
+    llvm_irgen_args = [
+      '-c', '-o', '@OUTPUT@', '@INPUT@',
+      '-flto=thin', '-emit-llvm',
+      '-MD', '-MQ', '@OUTPUT@', '-MF', '@DEPFILE@',
+      '-I@SOURCE_ROOT@/src/include',
+      '-I@BUILD_ROOT@/src/include',
+      '-I@BUILD_ROOT@/src/backend/utils/misc',
+      '-I@CURRENT_SOURCE_DIR@',
+      '-O2',
+      '-Wno-ignored-attributes',
+      '-Wno-empty-body',
+      g_c_args
+    ]
+
+    if ccache.found()
+      llvm_irgen_command = ccache
+      llvm_irgen_args = [clang.path()] + llvm_irgen_args
+    else
+      llvm_irgen_command = clang
+    endif
+
+    llvm_irgen_kw = {
+      'command': [llvm_irgen_command] + llvm_irgen_args,
+      'depfile': '@BASENAME@.c.bc.d',
+    }
+
+    irlink = find_program('src/tools/irlink', native: true)
+
+    llvm_irlink_kw = {
+      'command':[
+        irlink,
+        '--name', 'postgres',
+        '--lto', llvm_lto,
+        '--outdir', '@OUTPUT0@',
+        '--privdir', '@PRIVATE_DIR@',
+        '@INPUT@',
+      ],
+      'install': true,
+      'install_dir': dir_lib_pkg,
+    }
+
+  endif
+else
+  llvm = dependency('', required: false)
+endif
+
+
+
+###############################################################
+# Library: icu
+###############################################################
+
+if not get_option('icu').disabled()
+  icu = dependency('icu-uc', required: get_option('icu').enabled())
+  icu_i18n = dependency('icu-i18n', required: get_option('icu').enabled())
+
+  if icu.found()
+    cdata.set('USE_ICU', 1)
+  endif
+
+else
+  icu = dependency('', required : false)
+  icu_i18n = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: libxml
+###############################################################
+
+libxmlopt = get_option('libxml')
+if not libxmlopt.disabled()
+  libxml = dependency('libxml-2.0', required: libxmlopt, version: '>= 2.6.23')
+
+  if libxml.found()
+    cdata.set('USE_LIBXML', 1)
+  endif
+else
+  libxml = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: libxslt
+###############################################################
+
+libxsltopt = get_option('libxslt')
+if not libxsltopt.disabled()
+  libxslt = dependency('libxslt', required: libxsltopt)
+
+  if libxslt.found()
+    cdata.set('USE_LIBXSLT', 1)
+  endif
+else
+  libxslt = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: lz4
+###############################################################
+
+lz4opt = get_option('lz4')
+if not lz4opt.disabled()
+  lz4 = dependency('liblz4', required: lz4opt)
+
+  if lz4.found()
+    cdata.set('USE_LZ4', 1)
+    cdata.set('HAVE_LIBLZ4', 1)
+  endif
+
+else
+  lz4 = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: Tcl (for pltcl)
+# tclConfig.sh
+#
+# NB: tclConfig.sh is used in autoconf build for getting
+# TCL_SHARED_BUILD, TCL_INCLUDE_SPEC, TCL_LIBS and TCL_LIB_SPEC
+# variables. For now we have not seen a need to copy
+# that behaviour to the meson build.
+###############################################################
+
+tcl_dep = dependency('', required : false)
+tclopt = get_option('pltcl')
+tcl_version = get_option('tcl_version')
+if not tclopt.disabled()
+
+  # via pkg-config
+  tcl_dep = dependency(tcl_version, required: false)
+
+  if not tcl_dep.found()
+    tcl_dep = cc.find_library(tcl_version,
+      required: tclopt,
+      dirs: g_c_lib)
+  endif
+
+  if not cc.has_header('tcl.h', dependencies: tcl_dep, required: tclopt)
+    tcl_dep = dependency('', required: false)
+  endif
+endif
+
+
+
+###############################################################
+# Library: pam
+###############################################################
+
+pamopt = get_option('pam')
+if not pamopt.disabled()
+  pam = dependency('pam', required: false)
+
+  if not pam.found()
+    pam = cc.find_library('pam', required: pamopt, dirs: g_c_lib)
+  endif
+
+  if pam.found()
+    pam_header_found = false
+
+    # header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.
+    if cc.check_header('security/pam_appl.h', args: g_c_args, dependencies: pam, required: false)
+      cdata.set('HAVE_SECURITY_PAM_APPL_H', 1)
+      pam_header_found = true
+    elif cc.check_header('pam/pam_appl.h', args: g_c_args, dependencies: pam, required: pamopt)
+      cdata.set('HAVE_PAM_PAM_APPL_H', 1)
+      pam_header_found = true
+    endif
+
+    if pam_header_found
+      cdata.set('USE_PAM', 1)
+    else
+      pam = dependency('', required : false)
+    endif
+  endif
+else
+  pam = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: Perl (for plperl)
+###############################################################
+
+perlopt = get_option('plperl')
+perl_dep = dependency('', required: false)
+
+if perlopt.disabled()
+  perl_may_work = false
+else
+  perl_may_work = true
+
+  # First verify that perl has the necessary dependencies installed
+  perl_mods = run_command(
+    [perl,
+     '-MConfig', '-MOpcode', '-MExtUtils::Embed', '-MExtUtils::ParseXS',
+     '-e', ''],
+    check: false)
+  if perl_mods.returncode() != 0
+    perl_may_work = false
+    perl_msg = 'perl installation does not have the required modules'
+  endif
+
+  # Then inquire perl about its configuration
+  if perl_may_work
+    # FIXME: include copy-edited comments from perl.m4
+    perl_conf_cmd = [perl, '-MConfig', '-e', 'print $Config{$ARGV[0]}']
+    perlversion = run_command(perl_conf_cmd, 'api_versionstring', check: true).stdout()
+    archlibexp = run_command(perl_conf_cmd, 'archlibexp', check: true).stdout()
+    privlibexp = run_command(perl_conf_cmd, 'privlibexp', check: true).stdout()
+    useshrplib = run_command(perl_conf_cmd, 'useshrplib', check: true).stdout()
+    libperl = run_command(perl_conf_cmd, 'libperl', check: true).stdout()
+
+    perl_inc_dir = '@0@/CORE'.format(archlibexp)
+
+    if useshrplib != 'true'
+      perl_may_work = false
+      perl_msg = 'need a shared perl'
+    endif
+  endif
+
+  # XXX: should we only add directories that exist? Seems a bit annoying with
+  # macos' sysroot stuff...
+  #
+  # NB: For unknown reasons msys' python doesn't see these paths, despite gcc
+  # et al seeing them. So we can't use include_directories(), as that checks
+  # file existence.
+  if perl_may_work
+    # On most platforms, archlibexp is also where the Perl include files live ...
+    perl_ccflags = ['-I@0@'.format(perl_inc_dir)]
+    # ... but on newer macOS versions, we must use -iwithsysroot to look
+    # under sysroot
+    if not fs.is_file('@0@/perl.h'.format(perl_inc_dir)) and \
+       fs.is_file('@0@@1@/perl.h'.format(sysroot, perl_inc_dir))
+      perl_ccflags = ['-iwithsysroot', perl_inc_dir]
+    endif
+  endif
+
+  # check required headers are present
+  if perl_may_work and not \
+    cc.has_header('perl.h', args: g_c_args + perl_ccflags, required: false)
+    perl_may_work = false
+    perl_msg = 'missing perl.h'
+  endif
+
+  # Find perl library. This is made more complicated by the fact that the name
+  # Config.pm returns isn't directly usable (sometimes lib needs to be chopped
+  # off)
+  if perl_may_work
+    foreach p : ['perl', 'libperl', libperl, libperl.strip('lib'), fs.stem(libperl), fs.stem(libperl).strip('lib')]
+      perl_dep_int = cc.find_library(p,
+        dirs: ['@0@/CORE'.format(archlibexp)],
+        required: false)
+      if perl_dep_int.found()
+        break
+      endif
+    endforeach
+
+    if not perl_dep_int.found()
+      perl_may_work = false
+      perl_msg = 'missing libperl'
+    endif
+  endif
+
+  if perl_may_work
+    perl_ccflags_r = run_command(perl_conf_cmd, 'ccflags', check: true).stdout()
+    message('CCFLAGS recommended by Perl: @0@'.format(perl_ccflags_r))
+
+    foreach flag : perl_ccflags_r.split(' ')
+      if flag.startswith('-D') and \
+        (not flag.startswith('-D_') or flag == '_USE_32BIT_TIME_T')
+        perl_ccflags += flag
+      endif
+    endforeach
+
+    if host_system == 'win32'
+      perl_ccflags += ['-DPLPERL_HAVE_UID_GID']
+    endif
+
+    message('CCFLAGS for embedding perl: @0@'.format(' '.join(perl_ccflags)))
+
+    ldopts = run_command(perl, '-MExtUtils::Embed', '-e', 'ldopts', check: true).stdout().strip()
+
+    perl_ldopts = []
+    foreach ldopt : ldopts.split(' ')
+      if ldopt == ''
+        continue
+      # strawberry perl unhelpfully has that in ldopts
+      elif ldopt == '-s'
+        continue
+      # AIX perl has export file in ldopts
+      elif ldopt.startswith('-bE')
+        continue
+      endif
+
+      perl_ldopts += ldopt.strip('"')
+    endforeach
+
+    # FIXME: check if windows handling is necessary
+
+    message('LDFLAGS for embedding perl: "@0@" (ldopts: "@1@")'.format(
+      ' '.join(perl_ldopts), ldopts))
+
+    if perl_dep_int.found()
+      perl_dep = declare_dependency(
+        compile_args: perl_ccflags,
+        link_args: perl_ldopts,
+        version: perlversion,
+      )
+    endif
+  endif # perl_may_work
+
+  if not perl_may_work
+    if perlopt.enabled()
+      error('dependency perl failed: @0@'.format(perl_msg))
+    else
+      message('disabling optional dependency perl: @0@'.format(perl_msg))
+    endif
+  endif
+endif
+
+
+
+###############################################################
+# Library: Python (for plpython)
+###############################################################
+
+pyopt = get_option('plpython')
+if not pyopt.disabled()
+  pm = import('python')
+  python3_inst = pm.find_installation(required: pyopt.enabled())
+  python3_dep = python3_inst.dependency(embed: true, required: pyopt.enabled())
+  if not cc.has_header('Python.h', dependencies: python3_dep, required: pyopt.enabled())
+    python3_dep = dependency('', required: false)
+  endif
+else
+  python3_dep = dependency('', required: false)
+endif
+
+
+
+###############################################################
+# Library: Readline
+###############################################################
+
+if not get_option('readline').disabled()
+  libedit_preferred = get_option('libedit_preferred')
+  # Set the order of readline dependencies
+  check_readline_deps = libedit_preferred ? \
+    ['libedit', 'readline'] : ['readline', 'libedit']
+
+  foreach readline_dep : check_readline_deps
+    readline = dependency(readline_dep, required: false)
+    if not readline.found()
+      readline = cc.find_library(readline_dep,
+        required: get_option('readline').enabled(),
+        dirs: g_c_lib)
+    endif
+    if readline.found()
+      break
+    endif
+  endforeach
+
+  if readline.found()
+    cdata.set('HAVE_LIBREADLINE', 1)
+
+    editline_prefix = {
+      'header_prefix': 'editline/',
+      'flag_prefix': 'EDITLINE_',
+    }
+    readline_prefix = {
+      'header_prefix': 'readline/',
+      'flag_prefix': 'READLINE_',
+    }
+    default_prefix = {
+      'header_prefix': '',
+      'flag_prefix': '',
+    }
+
+    # Set the order of prefixes
+    prefixes = libedit_preferred ? \
+      [editline_prefix, default_prefix, readline_prefix] : \
+      [readline_prefix, default_prefix, editline_prefix]
+
+    at_least_one_header_found = false
+    foreach header: ['history', 'readline']
+      is_found = false
+      foreach prefix : prefixes
+        header_file = '@0@@1@.h'.format(prefix['header_prefix'], header)
+        # Check history.h and readline.h
+        if not is_found and cc.has_header(header_file,
+            args: g_c_args, include_directories: g_c_inc,
+            dependencies: [readline], required: false)
+          if header == 'history'
+            history_h = header_file
+          else
+            readline_h = header_file
+          endif
+          cdata.set('HAVE_@0@@1@_H'.format(prefix['flag_prefix'], header).to_upper(), 1)
+          is_found = true
+          at_least_one_header_found = true
+        endif
+      endforeach
+    endforeach
+
+    if not at_least_one_header_found
+      error('''readline header not found
+If you have @0@ already installed, see see meson-log/meson-log.txt for details on the
+failure. It is possible the compiler isn't looking in the proper directory.
+Use -Dreadline=false to disable readline support.'''.format(readline_dep))
+    endif
+
+    check_funcs = [
+      'append_history',
+      'history_truncate_file',
+      'rl_completion_matches',
+      'rl_filename_completion_function',
+      'rl_reset_screen_size',
+      'rl_variable_bind',
+    ]
+
+    foreach func : check_funcs
+      cdata.set('HAVE_'+func.to_upper(),
+        cc.has_function(func, args: g_c_args, dependencies: [readline]) ? 1 : false)
+    endforeach
+
+    check_vars = [
+      'rl_completion_suppress_quote',
+      'rl_filename_quote_characters',
+      'rl_filename_quoting_function',
+    ]
+
+    foreach var : check_vars
+      cdata.set('HAVE_'+var.to_upper(),
+        cc.has_header_symbol(readline_h, var,
+          args: g_c_args, include_directories: g_c_inc,
+          prefix: '#include <stdio.h>',
+          dependencies: [readline]) ? 1 : false)
+    endforeach
+
+    # If found via cc.find_library() ensure headers are found when using the
+    # dependency. On meson < 0.57 one cannot do compiler checks using the
+    # dependency returned by declare_dependency(), so we can't do this above.
+    if readline.type_name() == 'library'
+      readline = declare_dependency(dependencies: readline,
+        include_directories: g_c_inc)
+    endif
+  endif
+else
+  readline = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: selinux
+###############################################################
+
+selinux = dependency('', required : false)
+selinuxopt = get_option('selinux')
+if not selinuxopt.disabled()
+  selinux = dependency('libselinux', required: selinuxopt, version: '>= 2.1.10')
+endif
+cdata.set('HAVE_LIBSELINUX',
+  selinux.found() ? 1 : false)
+
+
+
+###############################################################
+# Library: systemd
+###############################################################
+
+systemd = dependency('', required : false)
+systemdopt = get_option('systemd')
+if meson.version().version_compare('>=0.59')
+  systemdopt = systemdopt.disable_auto_if(host_machine.system() != 'linux')
+endif
+if not systemdopt.disabled()
+  systemd = dependency('libsystemd', required: systemdopt)
+endif
+cdata.set('USE_SYSTEMD',
+  systemd.found() ? 1 : false)
+
+
+
+###############################################################
+# Library: SSL
+###############################################################
+
+if get_option('ssl') == 'openssl'
+
+  # Try to find openssl via pkg-config et al, if that doesn't work, look for
+  # the library names that we know about.
+
+  # via pkg-config et al
+  ssl = dependency('openssl', required: false)
+
+  # via library + headers
+  if not ssl.found()
+    ssl_lib = cc.find_library('ssl',
+      dirs: g_c_lib,
+      header_include_directories: g_c_inc,
+      has_headers: ['openssl/ssl.h', 'openssl/err.h'])
+    crypto_lib = cc.find_library('crypto',
+      dirs: g_c_lib,
+      header_include_directories: g_c_inc)
+    ssl_int = [ssl_lib, crypto_lib]
+
+    ssl = declare_dependency(dependencies: ssl_int,
+                             include_directories: g_c_inc)
+  else
+    cc.has_header('openssl/ssl.h', args: g_c_args, dependencies: ssl, required: true)
+    cc.has_header('openssl/err.h', args: g_c_args, dependencies: ssl, required: true)
+
+    ssl_int = [ssl]
+  endif
+
+  check_funcs = [
+    ['CRYPTO_new_ex_data', {'required': true}],
+    ['SSL_new', {'required': true}],
+
+    # Function introduced in OpenSSL 1.0.2.
+    ['X509_get_signature_nid'],
+
+    # Functions introduced in OpenSSL 1.1.0. We used to check for
+    # OPENSSL_VERSION_NUMBER, but that didn't work with 1.1.0, because LibreSSL
+    # defines OPENSSL_VERSION_NUMBER to claim version 2.0.0, even though it
+    # doesn't have these OpenSSL 1.1.0 functions. So check for individual
+    # functions.
+    ['OPENSSL_init_ssl'],
+    ['BIO_get_data'],
+    ['BIO_meth_new'],
+    ['ASN1_STRING_get0_data'],
+    ['HMAC_CTX_new'],
+    ['HMAC_CTX_free'],
+
+    # OpenSSL versions before 1.1.0 required setting callback functions, for
+    # thread-safety. In 1.1.0, it's no longer required, and CRYPTO_lock()
+    # function was removed.
+    ['CRYPTO_lock'],
+  ]
+
+  foreach c : check_funcs
+    func = c.get(0)
+    val = cc.has_function(func, args: g_c_args, dependencies: ssl_int)
+    if not val and c.get(1, {}).get('required', false)
+      error('openssl function @0@ is required'.format(func))
+    endif
+    cdata.set('HAVE_'+func.to_upper(), val ? 1 : false)
+  endforeach
+
+  cdata.set('USE_OPENSSL', 1,
+            description: 'Define to 1 to build with OpenSSL support. (-Dssl=openssl)')
+
+  cdata.set('OPENSSL_API_COMPAT', '0x10001000L',
+            description: '''Define to the OpenSSL API version in use. This avoids deprecation warnings
+   from newer OpenSSL versions.''')
+else
+  ssl = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: uuid
+###############################################################
+
+uuidopt = get_option('uuid')
+if uuidopt != 'none'
+  uuidname = uuidopt.to_upper()
+  if uuidopt == 'e2fs'
+    uuid = dependency('uuid', required: true)
+    uuidfunc = 'uuid_generate'
+    uuidheader = 'uuid/uuid.h'
+  elif uuidopt == 'bsd'
+    # libc should have uuid function
+    uuid = declare_dependency()
+    uuidfunc = 'uuid_to_string'
+    uuidheader = 'uuid.h'
+  elif uuidopt == 'ossp'
+    uuid = dependency('ossp-uuid', required: true)
+    uuidfunc = 'uuid_export'
+    uuidheader = 'ossp/uuid.h'
+  else
+    error('huh')
+  endif
+
+  if not cc.has_header_symbol(uuidheader, uuidfunc, args: g_c_args, dependencies: uuid)
+    error('uuid library @0@ missing required function @1@'.format(uuidopt, uuidfunc))
+  endif
+  cdata.set('HAVE_@0@'.format(uuidheader.underscorify().to_upper()), 1)
+
+  cdata.set('HAVE_UUID_@0@'.format(uuidname), 1,
+           description: 'Define to 1 if you have @0@ UUID support.'.format(uuidname))
+else
+  uuid = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Library: zlib
+###############################################################
+
+zlibopt = get_option('zlib')
+zlib = dependency('', required : false)
+if not zlibopt.disabled()
+  zlib_t = dependency('zlib', required: zlibopt)
+
+  if zlib_t.type_name() == 'internal'
+    # if fallback was used, we don't need to test if headers are present (they
+    # aren't built yet, so we can't test)
+    zlib = zlib_t
+  elif not zlib_t.found()
+    warning('did not find zlib')
+  elif not cc.has_header('zlib.h',
+    args: g_c_args, include_directories: g_c_inc,
+    dependencies: [zlib_t], required: zlibopt.enabled())
+    warning('zlib header not found')
+  elif not cc.has_type('z_streamp', args: g_c_args, dependencies: [zlib_t], prefix: '#include <zlib.h>')
+    if zlibopt.enabled()
+      error('zlib version is too old')
+    else
+      warning('zlib version is too old')
+    endif
+  else
+    zlib = zlib_t
+  endif
+
+  if zlib.found()
+    cdata.set('HAVE_LIBZ', 1)
+  endif
+endif
+
+
+
+###############################################################
+# Library: zstd
+###############################################################
+
+zstdopt = get_option('zstd')
+if not zstdopt.disabled()
+  zstd = dependency('libzstd', required: zstdopt, version: '>=1.4.0')
+
+  if zstd.found()
+    cdata.set('USE_ZSTD', 1)
+    cdata.set('HAVE_LIBZSTD', 1)
+  endif
+
+else
+  zstd = dependency('', required : false)
+endif
+
+
+
+###############################################################
+# Compiler tests
+###############################################################
+
+# Do we need -std=c99 to compile C99 code?
+c99_test = '''
+#include <stdbool.h>
+#include <complex.h>
+#include <tgmath.h>
+#include <inttypes.h>
+
+struct named_init_test {
+  int a;
+  int b;
+};
+
+extern void structfunc(struct named_init_test);
+
+int main(int argc, char **argv)
+{
+  struct named_init_test nit = {
+    .a = 3,
+    .b = 5,
+  };
+
+  for (int loop_var = 0; loop_var < 3; loop_var++)
+  {
+    nit.a += nit.b;
+  }
+
+  structfunc((struct named_init_test){1, 0});
+
+  return nit.a != 0;
+}
+'''
+
+if not cc.compiles(c99_test, name: 'c99', args: g_c_args)
+  if cc.compiles(c99_test, name: 'c99 with -std=c99', args: g_c_args + ['-std=c99'])
+    g_c_args += '-std=c99'
+    cflags += '-std=c99'
+  else
+    error('C compiler does not support C99')
+  endif
+endif
+
+sizeof_long = cc.sizeof('long', args: g_c_args)
+cdata.set('SIZEOF_LONG', sizeof_long)
+if sizeof_long == 8
+  cdata.set('HAVE_LONG_INT_64', 1)
+  cdata.set('PG_INT64_TYPE', 'long int')
+  cdata.set_quoted('INT64_MODIFIER', 'l')
+elif sizeof_long == 4 and cc.sizeof('long long', args: g_c_args) == 8
+  cdata.set('HAVE_LONG_LONG_INT_64', 1)
+  cdata.set('PG_INT64_TYPE', 'long long int')
+  cdata.set_quoted('INT64_MODIFIER', 'll')
+else
+  error('do not know how to get a 64bit int')
+endif
+
+if host_machine.endian() == 'big'
+  cdata.set('WORDS_BIGENDIAN', 1)
+endif
+
+alignof_types = ['short', 'int', 'long', 'double']
+maxalign = 0
+foreach t: alignof_types
+  align = cc.alignment(t, args: g_c_args)
+  if maxalign < align
+    maxalign = align
+  endif
+  cdata.set('ALIGNOF_@0@'.format(t.to_upper()), align)
+endforeach
+cdata.set('MAXIMUM_ALIGNOF', maxalign)
+
+cdata.set('SIZEOF_VOID_P', cc.sizeof('void *', args: g_c_args))
+cdata.set('SIZEOF_SIZE_T', cc.sizeof('size_t', args: g_c_args))
+
+
+# Check if __int128 is a working 128 bit integer type, and if so
+# define PG_INT128_TYPE to that typename.
+#
+# This currently only detects a GCC/clang extension, but support for other
+# environments may be added in the future.
+#
+# For the moment we only test for support for 128bit math; support for
+# 128bit literals and snprintf is not required.
+if cc.links('''
+  /*
+   * We don't actually run this test, just link it to verify that any support
+   * functions needed for __int128 are present.
+   *
+   * These are globals to discourage the compiler from folding all the
+   * arithmetic tests down to compile-time constants.  We do not have
+   * convenient support for 128bit literals at this point...
+   */
+  __int128 a = 48828125;
+  __int128 b = 97656250;
+
+  int main(void)
+  {
+      __int128 c,d;
+      a = (a << 12) + 1; /* 200000000001 */
+      b = (b << 12) + 5; /* 400000000005 */
+      /* try the most relevant arithmetic ops */
+      c = a * b;
+      d = (c + b) / b;
+      /* must use the results, else compiler may optimize arithmetic away */
+      return d != a+1;
+  }''',
+  name: '__int128',
+  args: g_c_args)
+
+  buggy_int128 = false
+
+  # Use of non-default alignment with __int128 tickles bugs in some compilers.
+  # If not cross-compiling, we can test for bugs and disable use of __int128
+  # with buggy compilers.  If cross-compiling, hope for the best.
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83925
+  if not meson.is_cross_build()
+    r =  cc.run('''
+    /* This must match the corresponding code in c.h: */
+    #if defined(__GNUC__) || defined(__SUNPRO_C) || defined(__IBMC__)
+    #define pg_attribute_aligned(a) __attribute__((aligned(a)))
+    #endif
+    typedef __int128 int128a
+    #if defined(pg_attribute_aligned)
+    pg_attribute_aligned(8)
+    #endif
+    ;
+
+    int128a holder;
+    void pass_by_val(void *buffer, int128a par) { holder = par; }
+
+    int main(void)
+    {
+        long int i64 = 97656225L << 12;
+        int128a q;
+        pass_by_val(main, (int128a) i64);
+        q = (int128a) i64;
+        return q != holder;
+    }''',
+    name: '__int128 alignment bug',
+    args: g_c_args)
+    assert(r.compiled())
+    if r.returncode() != 0
+      buggy_int128 = true
+    endif
+  endif
+
+  if not buggy_int128
+    cdata.set('PG_INT128_TYPE', '__int128')
+    cdata.set('ALIGNOF_PG_INT128_TYPE', cc.alignment('__int128', args: g_c_args))
+  endif
+endif
+
+
+# Check if the C compiler knows computed gotos (gcc extension, also
+# available in at least clang).  If so, define HAVE_COMPUTED_GOTO.
+#
+# Checking whether computed gotos are supported syntax-wise ought to
+# be enough, as the syntax is otherwise illegal.
+if cc.compiles('''
+    static inline int foo(void)
+    {
+      void *labeladdrs[] = {&&my_label};
+      goto *labeladdrs[0];
+      my_label:
+      return 1;
+    }''',
+    args: g_c_args)
+  cdata.set('HAVE_COMPUTED_GOTO', 1)
+endif
+
+
+# XXX: for now just assume that compiler knows __func__ - it's C99 after all.
+cdata.set('HAVE_FUNCNAME__FUNC', 1)
+
+# Check if the C compiler understands _Static_assert(),
+# and define HAVE__STATIC_ASSERT if so.
+#
+# We actually check the syntax ({ _Static_assert(...) }), because we need
+# gcc-style compound expressions to be able to wrap the thing into macros.
+if cc.compiles('''
+    int main(int arg, char **argv)
+    {
+        ({ _Static_assert(1, "foo"); });
+    }
+    ''',
+    args: g_c_args)
+  cdata.set('HAVE__STATIC_ASSERT', 1)
+endif
+
+# We use <stdbool.h> if we have it and it declares type bool as having
+# size 1.  Otherwise, c.h will fall back to declaring bool as unsigned char.
+if cc.has_type('_Bool', args: g_c_args) \
+  and cc.has_type('bool', prefix: '#include <stdbool.h>', args: g_c_args) \
+  and cc.sizeof('bool', prefix: '#include <stdbool.h>', args: g_c_args) == 1
+  cdata.set('HAVE__BOOL', 1)
+  cdata.set('PG_USE_STDBOOL', 1)
+endif
+
+
+# Need to check a call with %m because netbsd supports gnu_printf but emits a
+# warning for each use of %m.
+printf_attributes = ['gnu_printf', '__syslog__', 'printf']
+testsrc = '''
+extern void emit_log(int ignore, const char *fmt,...) __attribute__((format(@0@, 2,3)));
+static void call_log(void)
+{
+    emit_log(0, "error: %s: %m", "foo");
+}
+'''
+attrib_error_args = cc.get_supported_arguments('-Werror=format', '-Werror=ignored-attributes')
+foreach a : printf_attributes
+  if cc.compiles(testsrc.format(a), args: g_c_args + attrib_error_args, name: 'format ' + a)
+    cdata.set('PG_PRINTF_ATTRIBUTE', a)
+    break
+  endif
+endforeach
+
+if cc.has_function_attribute('visibility:default') and \
+  cc.has_function_attribute('visibility:hidden')
+  cdata.set('HAVE_VISIBILITY_ATTRIBUTE', 1)
+endif
+
+# Check if various builtins exist. Some builtins are tested separately,
+# because we want to test something more complicated than the generic case.
+builtins = [
+  'bswap16',
+  'bswap32',
+  'bswap64',
+  'clz',
+  'ctz',
+  'constant_p',
+  'frame_address',
+  'popcount',
+  'unreachable',
+]
+
+foreach builtin : builtins
+  fname = '__builtin_@0@'.format(builtin)
+  if cc.has_function(fname, args: g_c_args)
+    cdata.set('HAVE@0@'.format(fname.to_upper()), 1)
+  endif
+endforeach
+
+# Check if the C compiler understands __builtin_types_compatible_p,
+# and define HAVE__BUILTIN_TYPES_COMPATIBLE_P if so.
+#
+# We check usage with __typeof__, though it's unlikely any compiler would
+# have the former and not the latter.
+if cc.compiles('''
+    static int x;
+    static int y[__builtin_types_compatible_p(__typeof__(x), int)];
+    ''',
+    name: '__builtin_types_compatible_p',
+    args: g_c_args)
+  cdata.set('HAVE__BUILTIN_TYPES_COMPATIBLE_P', 1)
+endif
+
+# Check if the C compiler understands __builtin_$op_overflow(),
+# and define HAVE__BUILTIN_OP_OVERFLOW if so.
+#
+# Check for the most complicated case, 64 bit multiplication, as a
+# proxy for all of the operations.  To detect the case where the compiler
+# knows the function but library support is missing, we must link not just
+# compile, and store the results in global variables so the compiler doesn't
+# optimize away the call.
+if cc.links('''
+    INT64 a = 1;
+    INT64 b = 1;
+    INT64 result;
+
+    int main(void)
+    {
+        return __builtin_mul_overflow(a, b, &result);
+    }''',
+    name: '__builtin_mul_overflow',
+    args: g_c_args + ['-DINT64=@0@'.format(cdata.get('PG_INT64_TYPE'))],
+    )
+  cdata.set('HAVE__BUILTIN_OP_OVERFLOW', 1)
+endif
+
+# XXX: The configure.ac check for __cpuid() is broken, we don't copy that
+# here. To prevent problems due to two detection methods working, stop
+# checking after one.
+if cc.links('''
+    #include <cpuid.h>
+    int main(int arg, char **argv)
+    {
+        unsigned int exx[4] = {0, 0, 0, 0};
+        __get_cpuid(1, &exx[0], &exx[1], &exx[2], &exx[3]);
+    }
+    ''', name: '__get_cpuid',
+    args: g_c_args)
+  cdata.set('HAVE__GET_CPUID', 1)
+elif cc.links('''
+    #include <intrin.h>
+    int main(int arg, char **argv)
+    {
+        unsigned int exx[4] = {0, 0, 0, 0};
+        __cpuid(exx, 1);
+    }
+    ''', name: '__cpuid',
+    args: g_c_args)
+  cdata.set('HAVE__CPUID', 1)
+endif
+
+
+
+###############################################################
+# Compiler flags
+###############################################################
+
+common_functional_flags = [
+  # Disable strict-aliasing rules; needed for gcc 3.3+
+  '-fno-strict-aliasing',
+  # Disable optimizations that assume no overflow; needed for gcc 4.3+
+  '-fwrapv',
+  '-fexcess-precision=standard'
+]
+
+cflags += cc.get_supported_arguments(common_functional_flags)
+
+vectorize_cflags = cc.get_supported_arguments(['-ftree-vectorize'])
+unroll_loops_cflags = cc.get_supported_arguments(['-funroll-loops'])
+
+
+common_warning_flags = [
+  '-Wmissing-prototypes',
+  '-Wpointer-arith',
+  # Really don't want VLAs to be used in our dialect of C
+  '-Werror=vla',
+  # On macOS, complain about usage of symbols newer than the deployment target
+  '-Werror=unguarded-availability-new',
+  '-Wendif-labels',
+  '-Wmissing-format-attribute',
+  '-Wimplicit-fallthrough=3',
+  '-Wcast-function-type',
+  # This was included in -Wall/-Wformat in older GCC versions
+  '-Wformat-security',
+]
+
+cflags += cc.get_supported_arguments(common_warning_flags)
+
+if llvm.found()
+  cxxflags += cpp.get_supported_arguments(common_warning_flags)
+endif
+
+# A few places with imported code get a pass on -Wdeclaration-after-statement, remember
+# the result for them
+if cc.has_argument('-Wdeclaration-after-statement')
+  cflags += '-Wdeclaration-after-statement'
+  using_declaration_after_statement_warning = true
+else
+  using_declaration_after_statement_warning = false
+endif
+
+
+# The following tests want to suppress various unhelpful warnings by adding
+# -Wno-foo switches.  But gcc won't complain about unrecognized -Wno-foo
+# switches, so we have to test for the positive form and if that works,
+# add the negative form.
+
+negative_warning_flags = [
+  # Suppress clang's unhelpful unused-command-line-argument warnings.
+  'unused-command-line-argument',
+
+  # Remove clang 12+'s compound-token-split-by-macro, as this causes a lot
+  # of warnings when building plperl because of usages in the Perl headers.
+  'compound-token-split-by-macro',
+
+  # Similarly disable useless truncation warnings from gcc 8+
+  'format-truncation',
+  'stringop-truncation',
+
+  # FIXME: from andres's local config
+  'clobbered',
+  'missing-field-initializers',
+  'sign-compare',
+  'unused-parameter',
+]
+
+foreach w : negative_warning_flags
+  if cc.has_argument('-W'+w)
+    cflags += '-Wno-'+w
+  endif
+
+  if llvm.found() and cpp.has_argument('-W'+w)
+    cxxflags += '-Wno-'+w
+  endif
+endforeach
+
+
+# From Project.pm
+if cc.get_id() == 'msvc'
+  cflags += ['/wd4018', '/wd4244', '/wd4273', '/wd4101', '/wd4102', '/wd4090', '/wd4267']
+  cflags += ['/DWIN32', '/DWINDOWS', '/D__WINDOWS__', '/D__WIN32__',
+             '/DWIN32_STACK_RLIMIT=4194304', '/D_CRT_SECURE_NO_DEPRECATE',
+             '/D_CRT_NONSTDC_NO_DEPRECATE']
+endif
+
+
+
+###############################################################
+# Atomics
+###############################################################
+
+# FIXME
+
+if not get_option('spinlocks')
+  warning('Not using spinlocks will cause poor performance')
+else
+  cdata.set('HAVE_SPINLOCKS', 1)
+endif
+
+if not get_option('atomics')
+  warning('Not using atomics will cause poor performance')
+else
+  # XXX: perhaps we should require some atomics support in this case these
+  # days?
+  cdata.set('HAVE_ATOMICS', 1)
+
+  atomic_checks = [
+    {'name': 'HAVE_GCC__SYNC_CHAR_TAS',
+     'desc': '__sync_lock_test_and_set(char)',
+     'test': '''
+char lock = 0;
+__sync_lock_test_and_set(&lock, 1);
+__sync_lock_release(&lock);'''},
+
+    {'name': 'HAVE_GCC__SYNC_INT32_TAS',
+     'desc': '__sync_lock_test_and_set(int32)',
+     'test': '''
+int lock = 0;
+__sync_lock_test_and_set(&lock, 1);
+__sync_lock_release(&lock);'''},
+
+    {'name': 'HAVE_GCC__SYNC_INT32_CAS',
+     'desc': '__sync_val_compare_and_swap(int32)',
+     'test': '''
+int val = 0;
+__sync_val_compare_and_swap(&val, 0, 37);'''},
+
+    {'name': 'HAVE_GCC__SYNC_INT64_CAS',
+     'desc': '__sync_val_compare_and_swap(int64)',
+     'test': '''
+INT64 val = 0;
+__sync_val_compare_and_swap(&val, 0, 37);'''},
+
+    {'name': 'HAVE_GCC__ATOMIC_INT32_CAS',
+     'desc': ' __atomic_compare_exchange_n(int32)',
+     'test': '''
+int val = 0;
+int expect = 0;
+__atomic_compare_exchange_n(&val, &expect, 37, 0, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);'''},
+
+    {'name': 'HAVE_GCC__ATOMIC_INT64_CAS',
+     'desc': ' __atomic_compare_exchange_n(int64)',
+     'test': '''
+INT64 val = 0;
+INT64 expect = 0;
+__atomic_compare_exchange_n(&val, &expect, 37, 0, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED);'''},
+  ]
+
+  foreach check : atomic_checks
+    test = '''
+int main(void)
+{
+@0@
+}'''.format(check['test'])
+
+    cdata.set(check['name'],
+      cc.links(test,
+        name: check['desc'],
+        args: g_c_args + ['-DINT64=@0@'.format(cdata.get('PG_INT64_TYPE'))]) ? 1 : false
+    )
+  endforeach
+
+endif
+
+
+
+###############################################################
+# Select CRC-32C implementation.
+#
+# If we are targeting a processor that has Intel SSE 4.2 instructions, we can
+# use the special CRC instructions for calculating CRC-32C. If we're not
+# targeting such a processor, but we can nevertheless produce code that uses
+# the SSE intrinsics, perhaps with some extra CFLAGS, compile both
+# implementations and select which one to use at runtime, depending on whether
+# SSE 4.2 is supported by the processor we're running on.
+#
+# Similarly, if we are targeting an ARM processor that has the CRC
+# instructions that are part of the ARMv8 CRC Extension, use them. And if
+# we're not targeting such a processor, but can nevertheless produce code that
+# uses the CRC instructions, compile both, and select at runtime.
+###############################################################
+
+have_optimized_crc = false
+cflags_crc = []
+if host_cpu == 'x86' or host_cpu == 'x86_64'
+
+  if cc.get_id() == 'msvc'
+    cdata.set('USE_SSE42_CRC32C', false)
+    cdata.set('USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 1)
+    have_optimized_crc = true
+  else
+
+    prog = '''
+#include <nmmintrin.h>
+
+int main(void)
+{
+    unsigned int crc = 0;
+    crc = _mm_crc32_u8(crc, 0);
+    crc = _mm_crc32_u32(crc, 0);
+    /* return computed value, to prevent the above being optimized away */
+    return crc == 0;
+}
+'''
+
+    if cc.links(prog, name: '_mm_crc32_u8 and _mm_crc32_u32 without -msse4.2', args: g_c_args)
+      # Use Intel SSE 4.2 unconditionally.
+      cdata.set('USE_SSE42_CRC32C', 1)
+      have_optimized_crc = true
+    elif cc.links(prog, name: '_mm_crc32_u8 and _mm_crc32_u32 with -msse4.2', args: g_c_args + ['-msse4.2'])
+      # Use Intel SSE 4.2, with runtime check. The CPUID instruction is needed for
+      # the runtime check.
+      cflags_crc += '-msse4.2'
+      cdata.set('USE_SSE42_CRC32C', false)
+      cdata.set('USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 1)
+      have_optimized_crc = true
+    endif
+
+  endif
+
+elif host_cpu == 'arm' or host_cpu == 'aarch64'
+
+  prog = '''
+#include <arm_acle.h>
+
+int main(void)
+{
+    unsigned int crc = 0;
+    crc = __crc32cb(crc, 0);
+    crc = __crc32ch(crc, 0);
+    crc = __crc32cw(crc, 0);
+    crc = __crc32cd(crc, 0);
+
+    /* return computed value, to prevent the above being optimized away */
+    return crc == 0;
+}
+'''
+
+  if cc.links(prog, name: '__crc32cb, __crc32ch, __crc32cw, and __crc32cd without -march=armv8-a+crc',
+      args: g_c_args)
+    # Use ARM CRC Extension unconditionally
+    cdata.set('USE_ARMV8_CRC32C', true)
+    have_optimized_crc = true
+  elif cc.links(prog, name: '__crc32cb, __crc32ch, __crc32cw, and __crc32cd with -march=armv8-a+crc',
+      args: g_c_args + ['-march=armv8-a+crc'])
+    # Use ARM CRC Extension, with runtime check
+    cflags_crc += '-march=armv8-a+crc'
+    cdata.set('USE_ARMV8_CRC32C', false)
+    cdata.set('USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK', 1)
+    have_optimized_crc = true
+  endif
+endif
+
+if not have_optimized_crc
+  # fall back to slicing-by-8 algorithm, which doesn't require any special CPU
+  # support.
+  cdata.set('USE_SLICING_BY_8_CRC32C', 1)
+endif
+
+
+
+###############################################################
+# Other CPU specific stuff
+###############################################################
+
+if host_cpu == 'x86_64'
+
+  if cc.compiles('''
+      void main(void)
+      {
+          long long x = 1; long long r;
+          __asm__ __volatile__ (" popcntq %1,%0\n" : "=q"(r) : "rm"(x));
+      }''',
+      name: '@0@: popcntq instruction'.format(host_cpu),
+      args: g_c_args)
+    cdata.set('HAVE_X86_64_POPCNTQ', 1)
+  endif
+
+elif host_cpu == 'ppc' or host_cpu == 'ppc64'
+
+  if cc.compiles('''
+      void main(void)
+      {
+          int a = 0; int *p = &a; int r;
+	  __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));
+      }''',
+      name: '@0@: whether assembler supports lwarx hint bit'.format(host_cpu),
+      args: g_c_args)
+    cdata.set('HAVE_PPC_LWARX_MUTEX_HINT', 1)
+  endif
+
+  # Check if compiler accepts "i"(x) when __builtin_constant_p(x).
+  if cdata.has('HAVE__BUILTIN_CONSTANT_P')
+    if cc.compiles('''
+      static inline int
+      addi(int ra, int si)
+      {
+          int res = 0;
+          if (__builtin_constant_p(si))
+              __asm__ __volatile__(
+                  " addi %0,%1,%2\n" : "=r"(res) : "b"(ra), "i"(si));
+          return res;
+      }
+      int test_adds(int x) { return addi(3, x) + addi(x, 5); }
+      ''',
+      args: g_c_args)
+      cdata.set('HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P', 1)
+    endif
+  endif
+endif
+
+
+
+###############################################################
+# Library / OS tests
+###############################################################
+
+header_checks = [
+  ['atomic.h'],
+  ['stdbool.h'],
+  ['copyfile.h'],
+  ['execinfo.h'],
+  ['getopt.h'],
+  ['ifaddrs.h'],
+  ['langinfo.h'],
+  ['mbarrier.h'],
+  ['poll.h'],
+  ['strings.h'],
+  ['sys/epoll.h'],
+  ['sys/event.h'],
+  ['sys/ipc.h'],
+  ['sys/personality.h'],
+  ['sys/prctl.h'],
+  ['sys/procctl.h'],
+  ['sys/pstat.h'],
+  ['sys/resource.h'],
+  ['sys/select.h'],
+  ['sys/sem.h'],
+  ['sys/shm.h'],
+  ['sys/signalfd.h'],
+  ['sys/sockio.h'],
+  ['sys/tas.h'],
+  ['sys/uio.h'],
+  ['sys/un.h'],
+  ['termios.h'],
+  ['ucred.h'],
+  # Historically we've included sys/param.h first, due to sys/ucred.h not
+  # being standalone on OpenBSD (in 2013). But that doesn't look to be the case
+  # anymore in 2022.
+  ['sys/ucred.h'],
+  ['wctype.h'],
+  ['netinet/tcp.h'],
+  # Historically we've included sys/socket.h first due to net/if.h not being
+  # standalone on some BSDs (in 2009). But that doesn't look to be the case
+  # anymore in 2022.
+  ['net/if.h'],
+  ['crtdefs.h'],
+]
+
+foreach c : header_checks
+  header = c.get(0)
+  varname = 'HAVE_'+header.underscorify().to_upper()
+
+  # Emulate autoconf behaviour of not-found->undef, found->1
+  found = cc.has_header(header, include_directories: g_c_inc, args: g_c_args)
+  cdata.set(varname, found ? 1 : false,
+            description: 'Define to 1 if you have the <@0@> header file.'.format(header))
+endforeach
+
+
+
+decl_checks = [
+  ['F_FULLFSYNC', 'fcntl.h'],
+  ['RTLD_GLOBAL', 'dlfcn.h'],
+  ['RTLD_NOW', 'dlfcn.h'],
+  ['fdatasync', 'unistd.h'],
+  ['posix_fadvise', 'fcntl.h'],
+  ['sigwait', 'signal.h'],
+  ['strlcat', 'string.h'],
+  ['strlcpy', 'string.h'],
+  ['strnlen', 'string.h'],
+  ['strtoll', 'stdlib.h'], ['strtoull', 'stdlib.h'], # strto[u]ll may exist but not be declared
+]
+
+# Need to check for function declarations for these functions, because
+# checking for library symbols wouldn't handle deployment target
+# restrictions on macOS
+decl_checks += [
+  ['preadv', 'sys/uio.h'],
+  ['pwritev', 'sys/uio.h'],
+]
+
+foreach c : decl_checks
+  func = c.get(0)
+  header = c.get(1)
+  args = c.get(2, {})
+  varname = 'HAVE_DECL_'+func.underscorify().to_upper()
+
+  found = cc.has_header_symbol(header, func,
+    args: g_c_args, include_directories: g_c_inc,
+    kwargs: args)
+  cdata.set10(varname, found, description:
+'''Define to 1 if you have the declaration of `@0@', and to 0 if you
+   don't.'''.format(func))
+endforeach
+
+
+
+if cc.has_type('struct cmsgcred',
+    args: g_c_args + ['@0@'.format(cdata.get('HAVE_SYS_UCRED_H')) == 'false' ? '-DHAVE_SYS_UCRED_H' : ''],
+    include_directories: g_c_inc,
+    prefix: '''
+#include <sys/socket.h>
+#include <sys/param.h>
+#ifdef HAVE_SYS_UCRED_H
+#include <sys/ucred.h>
+#endif''')
+  cdata.set('HAVE_STRUCT_CMSGCRED', 1)
+else
+  cdata.set('HAVE_STRUCT_CMSGCRED', false)
+endif
+
+if cc.has_type('struct option',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '@0@'.format(cdata.get('HAVE_GETOPT_H')) == '1' ? '#include <getopt.h>' : '')
+  cdata.set('HAVE_STRUCT_OPTION', 1)
+endif
+
+
+foreach c : ['opterr', 'optreset']
+  varname = 'HAVE_INT_'+c.underscorify().to_upper()
+
+  if cc.links('''
+#include <unistd.h>
+int main(void)
+{
+    extern int @0@;
+    @0@ = 1;
+}
+'''.format(c), name: c, args: g_c_args)
+    cdata.set(varname, 1)
+  else
+    cdata.set(varname, false)
+  endif
+endforeach
+
+if cc.has_type('socklen_t',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/socket.h>''')
+  cdata.set('HAVE_SOCKLEN_T', 1)
+endif
+
+if cc.has_type('struct sockaddr_storage',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_STORAGE', 1)
+endif
+
+if cc.has_member('struct sockaddr_storage', 'ss_family',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY', 1)
+endif
+
+if cc.has_member('struct sockaddr_storage', '__ss_family',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY', 1)
+endif
+
+if cc.has_member('struct sockaddr_storage', 'ss_len',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN', 1)
+endif
+
+if cc.has_member('struct sockaddr_storage', '__ss_len',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_STORAGE___SS_LEN', 1)
+endif
+
+if cc.has_member('struct sockaddr', 'sa_len',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_SA_LEN', 1)
+endif
+
+if cc.has_type('struct sockaddr_un',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/un.h>''')
+  cdata.set('HAVE_STRUCT_SOCKADDR_UN', 1)
+endif
+
+if cc.has_type('struct addrinfo', args: g_c_args,
+    include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+''')
+  cdata.set('HAVE_STRUCT_ADDRINFO', 1)
+endif
+
+if cc.has_type('struct sockaddr_in6',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <netinet/in.h>''')
+  cdata.set('HAVE_IPV6', 1)
+endif
+
+
+if cc.has_member('struct tm', 'tm_zone',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <time.h>
+''')
+  cdata.set('HAVE_STRUCT_TM_TM_ZONE', 1)
+endif
+
+if cc.compiles('''
+#include <time.h>
+extern int foo(void);
+int foo(void)
+{
+    return timezone / 60;
+}
+''',
+    name: 'Check if the global variable `timezone\' exists',
+    args: g_c_args, include_directories: g_c_inc)
+  cdata.set('HAVE_INT_TIMEZONE', 1)
+else
+  cdata.set('HAVE_INT_TIMEZONE', false)
+endif
+
+# FIXME: sys/ipc.h, sys/sem.h includes were conditional
+if cc.has_type('union semun',
+    args: g_c_args, include_directories: g_c_inc,
+    prefix: '''
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+''')
+  cdata.set('HAVE_UNION_SEMUN', 1)
+endif
+
+if cc.compiles('''
+#include <string.h>
+int main(void)
+{
+  char buf[100];
+  switch (strerror_r(1, buf, sizeof(buf)))
+  { case 0: break; default: break; }
+}''',
+    name: 'strerror_r',
+    args: g_c_args, include_directories: g_c_inc)
+  cdata.set('STRERROR_R_INT', 1)
+else
+  cdata.set('STRERROR_R_INT', false)
+endif
+
+# Check for the locale_t type and find the right header file.  macOS
+# needs xlocale.h; standard is locale.h, but glibc also has an
+# xlocale.h file that we should not use.
+if cc.has_type('locale_t', prefix: '#include <locale.h>')
+  cdata.set('HAVE_LOCALE_T', 1)
+elif cc.has_type('locale_t', prefix: '#include <xlocale.h>')
+  cdata.set('HAVE_LOCALE_T', 1)
+  cdata.set('LOCALE_T_IN_XLOCALE', 1)
+endif
+
+# Make sure there's a declaration for sigwait(), then make sure that it
+# conforms to the POSIX standard (there seem to still be some platforms out
+# there with pre-POSIX sigwait()).
+if cc.compiles('''
+#include <signal.h>
+int sigwait(const sigset_t *set, int *sig);
+''',
+  name: 'POSIX compatible sigwait() declaration',
+  args: g_c_args, include_directories: g_c_inc)
+  cdata.set('HAVE_POSIX_DECL_SIGWAIT', 1)
+else
+  cdata.set('HAVE_POSIX_DECL_SIGWAIT', false)
+endif
+
+# Check if the C compiler understands typeof or a variant.  Define
+# HAVE_TYPEOF if so, and define 'typeof' to the actual key word.
+foreach kw : ['typeof', '__typeof__', 'decltype']
+  if cc.compiles('''
+int main(void)
+{
+    int x = 0;
+    @0@(x) y;
+    y = x;
+    return y;
+}
+'''.format(kw),
+    name: 'typeof()',
+    args: g_c_args, include_directories: g_c_inc)
+
+    cdata.set('HAVE_TYPEOF', 1)
+    if kw != 'typeof'
+      cdata.set('typeof', kw)
+    endif
+
+    break
+  endif
+endforeach
+
+
+# MSVC doesn't cope well with defining restrict to __restrict, the
+# spelling it understands, because it conflicts with
+# __declspec(restrict). Therefore we define pg_restrict to the
+# appropriate definition, which presumably won't conflict.
+#
+# FIXME: We used to check if restrict is available, but it really should these
+# days?
+#
+# FIXME: Historically we allowed platforms to disable restrict in template
+# files. Is that really still necessary?
+cdata.set('pg_restrict', '__restrict')
+
+
+cdata.set('MEMSET_LOOP_LIMIT', 1024)
+
+# XXX: We probably can just rely on this existing in supported windows versions?
+if host_system == 'win32' and \
+  cc.has_type('MINIDUMP_TYPE', prefix: '''
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <string.h>
+#include <dbghelp.h>
+''',
+  args: g_c_args, include_directories: g_c_inc)
+  cdata.set('HAVE_MINIDUMP_TYPE', true)
+endif
+
+
+if cc.links('''
+#include <machine/vmparam.h>
+#include <sys/exec.h>
+
+int main(void)
+{
+    PS_STRINGS->ps_nargvstr = 1;
+    PS_STRINGS->ps_argvstr = "foo";
+}
+''',
+  name: 'PS_STRINGS', args: g_c_args)
+  cdata.set('HAVE_PS_STRINGS', 1)
+else
+  cdata.set('HAVE_PS_STRINGS', false)
+endif
+
+
+m_dep = cc.find_library('m', required : false)
+
+# Most libraries are included only if they demonstrably provide a function we
+# need, but libm is an exception: always include it, because there are too
+# many compilers that play cute optimization games that will break probes for
+# standard functions such as pow().
+os_deps = [m_dep]
+
+rt_dep = cc.find_library('rt', required : false)
+
+dl_dep = cc.find_library('dl', required : false)
+
+util_dep = cc.find_library('util', required : false)
+posix4_dep = cc.find_library('posix4', required : false)
+
+getopt_dep = cc.find_library('getopt', required : false)
+gnugetopt_dep = cc.find_library('gnugetopt', required : false)
+
+execinfo_dep = cc.find_library('execinfo', required : false)
+
+func_checks = [
+  ['_configthreadlocale'],
+  ['backtrace_symbols', {'dependencies': [execinfo_dep]}],
+  ['clock_gettime', {'dependencies': [rt_dep, posix4_dep]}],
+  ['copyfile'],
+  ['dlopen', {'dependencies': [dl_dep]}],
+  ['explicit_bzero'],
+  ['fdatasync', {'dependencies': [rt_dep, posix4_dep]}],
+  ['fls'],
+  ['getaddrinfo'],
+  ['gethostbyname_r', {'dependencies': [thread_dep]}],
+  ['getifaddrs'],
+  ['getopt', {'dependencies': [getopt_dep, gnugetopt_dep]}],
+  ['getopt_long',{'dependencies': [getopt_dep, gnugetopt_dep]}],
+  ['getpeereid'],
+  ['getpeerucred'],
+  ['getpwuid_r', {'dependencies': [thread_dep]}],
+  ['getrlimit'],
+  ['getrusage'],
+  ['gettimeofday'], # XXX: only exists in Solution.pm
+  ['inet_aton'],
+  ['inet_pton'],
+  ['kqueue'],
+  ['link'],
+  ['mbstowcs_l'],
+  ['memset_s'],
+  ['mkdtemp'],
+  ['poll'],
+  ['posix_fadvise'],
+  ['posix_fallocate'],
+  ['ppoll'],
+  ['pread'],
+  ['pstat'],
+  ['pthread_is_threaded_np', {'dependencies': [thread_dep]}],
+  ['pwrite'],
+  ['readlink'],
+  ['readv'],
+  ['setenv'], # FIXME: windows handling
+  ['setproctitle', {'dependencies': [util_dep]}],
+  ['setproctitle_fast'],
+  ['setsid'],
+  ['shm_open', {'dependencies': [rt_dep]}],
+  ['shm_unlink', {'dependencies': [rt_dep]}],
+  ['strchrnul'],
+  ['strerror_r', {'dependencies': [thread_dep]}],
+  ['strlcat'],
+  ['strlcpy'],
+  ['strnlen'],
+  ['strsignal'],
+  ['strtof'], # strsignal is checked separately
+  ['strtoll'], ['__strtoll'], ['strtoq'],
+  ['strtoull'], ['__strtoull'], ['strtouq'],
+  ['symlink'],
+  ['sync_file_range'],
+  ['syncfs'],
+  ['unsetenv'],
+  ['uselocale'],
+  ['wcstombs_l'],
+  ['writev'],
+]
+
+foreach c : func_checks
+  func = c.get(0)
+  kwargs = c.get(1, {})
+  deps = kwargs.get('dependencies', [])
+
+  varname = 'HAVE_'+func.underscorify().to_upper()
+
+  found = cc.has_function(func, args: g_c_args,
+                          kwargs: kwargs + {'dependencies': []})
+
+  if not found
+    foreach dep : deps
+      if not dep.found()
+        continue
+      endif
+      found = cc.has_function(func, args: g_c_args,
+                              kwargs: kwargs + {'dependencies': [dep]})
+      if found
+        os_deps += dep
+        break
+      endif
+    endforeach
+  endif
+
+  # Emulate autoconf behaviour of not-found->undef, found->1
+  cdata.set(varname, found  ? 1 : false,
+            description: 'Define to 1 if you have the `@0@\' function.'.format(func))
+endforeach
+
+
+if cc.has_function('syslog', args: g_c_args) and cc.check_header('syslog.h', args: g_c_args)
+  cdata.set('HAVE_SYSLOG', 1)
+endif
+
+
+
+
+if host_system == 'aix'
+  dlsuffix = '.so'
+  exesuffix = ''
+  export_file_format = 'aix'
+elif host_system == 'darwin'
+  dlsuffix = '.dylib'
+  exesuffix = ''
+  export_file_format = 'darwin'
+elif host_system == 'win32'
+  dlsuffix = '.dll'
+  exesuffix = '.exe'
+  export_file_format = ''
+else
+  dlsuffix = '.so'
+  exesuffix = ''
+  export_file_format = 'gnu'
+endif
+
+cdata.set_quoted('DLSUFFIX', dlsuffix)
+
+if host_system == 'darwin'
+  cdata.set('USE_SYSV_SEMAPHORES', 1)
+  cdata.set('USE_SYSV_SHARED_MEMORY', 1)
+elif host_system == 'openbsd'
+  # FIXME: This likely defaulted to sysv, but the defaults for sysv semas on
+  # openbsd are so low that tap tests don't pass.
+  cdata.set('USE_NAMED_POSIX_SEMAPHORES', 1)
+  cdata.set('USE_SYSV_SHARED_MEMORY', 1)
+elif host_system == 'win32'
+  cdata.set('USE_WIN32_SEMAPHORES', 1)
+  cdata.set('USE_WIN32_SHARED_MEMORY', 1)
+else
+  cdata.set('USE_UNNAMED_POSIX_SEMAPHORES', 1)
+  cdata.set('USE_SYSV_SHARED_MEMORY', 1)
+endif
+
+
+if host_system == 'win32'
+  cdata.set('HAVE_IPV6', 1)
+  cdata.set('HAVE_SYMLINK', 1)
+  cdata.set('WIN32_STACK_RLIMIT', 4194304)
+  cdata.set('HAVE__CONFIGTHREADLOCALE', 1)
+endif
+
+if cc.get_id() == 'msvc'
+  ldflags += ['/fixed:no','/dynamicbase', '/nxcompat']
+endif
+
+if host_system == 'win32'
+  os_deps += cc.find_library('ws2_32', required: true)
+endif
+
+add_project_arguments(cflags, language: ['c'])
+add_project_arguments(cxxflags, language: ['cpp'])
+add_project_arguments(cbflags, language: ['c', 'cpp'])
+add_project_link_arguments(ldflags, language: ['c', 'cpp'])
+
+
+###############################################################
+# Threading
+###############################################################
+
+# Probably not worth implementing other cases anymore
+cdata.set('ENABLE_THREAD_SAFETY', 1)
+
+if thread_dep.found()
+  if cc.has_function('pthread_is_threaded_np', args: g_c_args, dependencies: [thread_dep])
+    cdata.set('HAVE_PTHREAD_IS_THREADED_NP', 1)
+  endif
+  if cc.has_function('pthread_barrier_wait', args: g_c_args, dependencies: [thread_dep])
+    cdata.set('HAVE_PTHREAD_BARRIER_WAIT', 1)
+  endif
+endif
+
+
+
+###############################################################
+# NLS / Gettext
+###############################################################
+
+i18n = import('i18n')
+nlsopt = get_option('nls')
+libintl = dependency('', required: false)
+
+if not nlsopt.disabled()
+  # meson 0.59 has this wrapped in dependency('int')
+  if cc.check_header('libintl.h', args: g_c_args, required: nlsopt)
+    # in libc
+    if cc.has_function('ngettext')
+      libintl = declare_dependency()
+    else
+      libintl = cc.find_library('intl', has_headers: ['libintl.h'], required: nlsopt)
+    endif
+  endif
+
+  if libintl.found()
+    cdata.set('ENABLE_NLS', 1)
+  endif
+endif
+
+
+
+###############################################################
+# Build
+###############################################################
+
+# Collect a number of lists of things while recursing through the source
+# tree. Later steps then can use those.
+
+test_deps = []
+backend_targets = []
+
+
+# Define the tests to distribute them to the correct test styles later
+tests = []
+
+
+# Default options for targets
+
+default_target_args = {
+  'implicit_include_directories': false,
+  'install': true,
+}
+
+default_lib_args = default_target_args + {
+  'name_prefix': '',
+}
+
+internal_lib_args = default_lib_args + {
+  'build_by_default': false,
+  'install': false,
+}
+
+default_mod_args = default_lib_args + {
+  'name_prefix': '',
+  'install_dir': dir_lib_pkg,
+}
+
+default_bin_args = default_target_args + {
+  'install_dir': dir_bin,
+}
+
+library_path_var = ''
+
+if host_system == 'win32'
+  # nothing to do
+elif host_system == 'openbsd'
+  # openbsd's $ORIGIN doesn't use an absolute path to the binary, but argv[0]
+  # (i.e. absolute when invoked with an absolute name, but e.g. not absolute
+  # when invoked via PATH search).
+  library_path_var = 'LD_LIBRARY_PATH'
+else
+  if host_system == 'darwin'
+    rpath_var = '@loader_path'
+  else
+    rpath_var = '$ORIGIN'
+  endif
+
+  # PG binaries might need to link to libpq, use relative path to reference
+  bin_to_lib = run_command(python, files('src/tools/relpath.py'),
+    dir_bin, dir_lib, check: true).stdout().strip()
+  default_bin_args += {'install_rpath':  rpath_var / bin_to_lib}
+
+  # PG extensions might need to link to libpq, use relative path to reference
+  # (often just .)
+  mod_to_lib = run_command(python, files('src/tools/relpath.py'),
+    dir_lib_pkg, dir_lib, check: true).stdout().strip()
+  default_mod_args += {'install_rpath': rpath_var / mod_to_lib}
+endif
+
+
+###
+### windows resources related stuff
+###
+
+pg_ico = meson.source_root() / 'src' / 'port' / 'win32.ico'
+win32ver_rc_in = files('src/port/win32ver.rc.in')
+rcgen = find_program('src/tools/rcgen', native: true)
+
+rcgen_cmd = [rcgen, '@INPUT@', '-o', '@OUTPUT@', '--depfile', '@DEPFILE@']
+rcgen_bin_cmd = rcgen_cmd + [
+  '--VFT_TYPE', 'VFT_APP',
+  '--FILEENDING', 'exe',
+  '--ICO', pg_ico,
+]
+
+rcgen_lib_cmd = rcgen_cmd + [
+  '--VFT_TYPE', 'VFT_DLL',
+  '--FILEENDING', 'dll',
+]
+
+rcgen_inc = [postgres_inc]
+
+rcgen_kw = {
+  'input': win32ver_rc_in,
+  'output': 'win32ver.rc',
+  'depfile': '@PLAINNAME@.d',
+}
+
+rccompile_kw = {
+  'include_directories': rcgen_inc,
+}
+
+
+# First visit src/include - all targets creating headers are defined
+# within. That makes it easy to add the necessary dependencies for the
+# subsequent build steps.
+
+generated_headers = []
+generated_backend_headers = []
+
+
+subdir('src/include')
+
+subdir('config')
+
+# Then through src/port and src/common, as most other things depend on them
+
+frontend_port_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  sources: [errcodes],
+  dependencies: os_deps,
+)
+
+backend_port_code = declare_dependency(
+  compile_args: ['-DBUILDING_DLL'],
+  include_directories: [postgres_inc],
+  sources: [errcodes],
+  dependencies: os_deps,
+)
+
+subdir('src/port')
+
+frontend_common_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  sources: generated_headers,
+  dependencies: os_deps,
+)
+
+backend_common_code = declare_dependency(
+  compile_args: ['-DBUILDING_DLL'],
+  include_directories: [postgres_inc],
+  sources: generated_headers,
+)
+
+subdir('src/common')
+
+frontend_shlib_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  link_with: [pgport_shlib, common_shlib],
+  sources: generated_headers,
+  dependencies: [os_deps, libintl],
+)
+
+libpq_deps = [
+  frontend_shlib_code,
+  thread_dep,
+
+  gssapi,
+  ldap,
+  libintl,
+  ssl,
+]
+
+subdir('src/interfaces/libpq')
+# fe_utils depends on libpq
+subdir('src/fe_utils')
+
+frontend_code = declare_dependency(
+  compile_args: ['-DFRONTEND'],
+  include_directories: [postgres_inc],
+  link_with: [pgport_static, common_static, fe_utils],
+  sources: generated_headers,
+  dependencies: [os_deps, libintl],
+)
+
+backend_both_deps = [
+  thread_dep,
+  os_deps,
+
+  bsd_auth,
+  gssapi,
+  icu,
+  icu_i18n,
+  ldap,
+  libintl,
+  libxml,
+  lz4,
+  pam,
+  ssl,
+  systemd,
+  zlib,
+  zstd,
+]
+
+backend_deps = backend_both_deps
+
+if host_system == 'win32'
+  backend_deps += cc.find_library('secur32', required: true)
+endif
+
+backend_mod_deps = backend_both_deps
+
+backend_code = declare_dependency(
+  compile_args: ['-DBUILDING_DLL'],
+  include_directories: [postgres_inc],
+  link_with: [],
+  sources: generated_headers + generated_backend_headers,
+  dependencies: backend_deps,
+)
+
+# Note there's intentionally no dependency on pgport/common here - we want the
+# symbols from the main binary for extension modules, rather than the
+# extension linking separately to pgport/common.
+backend_mod_code = declare_dependency(
+  compile_args: [],
+  include_directories: [postgres_inc],
+  link_with: [],
+  sources: generated_headers + generated_backend_headers,
+  dependencies: backend_mod_deps,
+)
+
+# Then through the main sources. That way contrib can have dependencies on
+# main sources. Note that this explicitly doesn't enter src/test, right now a
+# few regression tests depend on contrib files.
+
+subdir('src')
+
+subdir('contrib')
+
+subdir('src/test')
+subdir('src/interfaces/libpq/test')
+subdir('src/interfaces/ecpg/test')
+
+subdir('doc/src/sgml')
+
+
+if host_system == 'darwin'
+  meson.add_install_script('src/tools/relativize_shared_library_references')
+endif
+
+
+
+###############################################################
+# Test prep
+###############################################################
+
+# The determination of where a DESTDIR install points to is ugly, it's somewhat hard
+# to combine two absolute paths portably...
+
+prefix = get_option('prefix')
+
+test_prefix = prefix
+
+if fs.is_absolute(get_option('prefix'))
+  if host_system == 'win32'
+    if prefix.split(':\\').length() == 1
+        # just a drive
+        test_prefix = ''
+    else
+        test_prefix = prefix.split(':\\')[1]
+    endif
+  else
+    test_prefix = prefix.substring(1)
+  endif
+endif
+
+# DESTDIR for the installation used to run tests in
+test_install_destdir = meson.build_root() / 'tmp_install/'
+# DESTDIR + prefix appropriately munged
+test_install_location = test_install_destdir / test_prefix
+
+
+test('tmp_install',
+    meson_bin, args: meson_args + ['install', '--quiet', '--only-changed', '--no-rebuild'],
+    env: {'DESTDIR':test_install_destdir},
+    priority: 100,
+    is_parallel: false,
+    suite: ['setup'])
+
+test_result_dir = meson.build_root() / 'testrun'
+
+
+# XXX: pg_regress doesn't assign unique ports on windows. To avoid the
+# inevitable conflicts from running tests in parallel, hackishly assign
+# different ports for different tests.
+
+testport=40000
+
+test_env = environment()
+
+temp_install_bindir = test_install_location / get_option('bindir')
+test_env.set('PG_REGRESS', pg_regress.full_path())
+test_env.set('REGRESS_SHLIB', regress_module.full_path())
+
+# Test suites that are not safe by default but can be run if selected
+# by the user via the whitespace-separated list in variable PG_TEST_EXTRA.
+# Export PG_TEST_EXTRA so it can be checked in individual tap tests.
+test_env.set('PG_TEST_EXTRA', get_option('PG_TEST_EXTRA'))
+
+# On platforms without $ORIGIN support we need to add the temporary
+# installation to the library search path.
+if library_path_var != ''
+  test_env.prepend(library_path_var, test_install_location / get_option('libdir'))
+endif
+
+
+###############################################################
+# Test Generation
+###############################################################
+
+# Check whether tap tests are enabled or not
+are_tap_tests_enabled = false
+if get_option('enable-tap-tests')
+  # Checking for perl modules for tap tests
+  perl_ipc_run_check = run_command(prove, 'config/check_modules.pl', check: false)
+  if perl_ipc_run_check.returncode() != 0
+    message(perl_ipc_run_check.stderr().strip())
+    error('Additional Perl modules are required to run TAP tests.')
+  endif
+  are_tap_tests_enabled = true
+endif
+
+foreach test: tests
+  test_default = {
+    'name': test['name'],
+    'sd': test['sd'],
+    'bd': test['bd'],
+  }
+  # Define all 'pg_regress' style tests
+  if 'regress' in test
+    t = test_default + test['regress']
+    test_command = [
+      t.get('test_runner', pg_regress).full_path(),
+      '--temp-instance', test_result_dir / t['name'] / 'pg_regress' / 'tmp_check',
+      '--inputdir', t.get('inputdir', t['sd']),
+      '--expecteddir', t.get('expecteddir', t['sd']),
+      '--outputdir', test_result_dir / t['name'] / 'pg_regress',
+      '--bindir', '',
+      '--dlpath', t['bd'],
+      '--max-concurrent-tests=20',
+      '--port=@0@'.format(testport),
+    ]
+
+    if t.has_key('regress_args')
+      test_command += t['regress_args']
+    endif
+
+    if t.has_key('schedule')
+      test_command += ['--schedule', t['schedule'],]
+    endif
+    if t.has_key('sql')
+      test_command += t['sql']
+    endif
+
+    env = test_env
+    env.prepend('PATH', temp_install_bindir, t['bd'])
+
+    test_kwargs = {
+      'suite': ['pg_regress', t['name']],
+      'priority': 10,
+      'timeout': 1000,
+      'depends': test_deps + t.get('deps', []),
+      'env': env,
+      'args': [
+        testwrap.path(),
+        '--srcdir', t['sd'],
+        '--basedir', meson.build_root(),
+        '--builddir', t['bd'],
+        '--testgroup', t['name'],
+        '--testname', 'pg_regress',
+        test_command,
+      ]
+    }
+
+    if t.has_key('test_kwargs')
+      test_kwargs += t['test_kwargs']
+    endif
+
+    test(t['name'] / 'pg_regress',
+      python,
+      kwargs: test_kwargs,
+    )
+
+    testport = testport + 1
+  endif
+
+  # Define all 'isolationtester' style tests
+  if 'isolation' in test
+    t = test_default + test['isolation']
+    test_command = [
+      pg_isolation_regress.full_path(),
+      '--temp-instance', test_result_dir / t['name'] / 'isolation' / 'tmp_check',
+      '--inputdir', t['sd'],
+      '--outputdir', test_result_dir / t['name'] / 'isolation',
+      '--bindir', '',
+      '--dlpath', t['bd'],
+      '--max-concurrent-tests=20',
+      '--port=@0@'.format(testport),
+    ]
+
+    if t.has_key('regress_args')
+      test_command += t['regress_args']
+    endif
+
+    if t.has_key('schedule')
+      test_command += ['--schedule', t['schedule'],]
+    else
+      test_command += t['specs']
+    endif
+
+    env = test_env
+    env.prepend('PATH', temp_install_bindir, t['bd'])
+
+    test_kwargs = {
+      'suite': ['isolation', t['name']],
+      'priority': 20,
+      'timeout': 1000,
+      'depends': test_deps + t.get('deps', []),
+      'env': env,
+      'args': [
+        testwrap.path(),
+        '--srcdir', t['sd'],
+        '--basedir', meson.build_root(),
+        '--builddir', t['bd'],
+        '--testgroup', t['name'],
+        '--testname', 'isolation',
+        test_command,
+      ]
+    }
+
+    if t.has_key('test_kwargs')
+      test_kwargs += t['test_kwargs']
+    endif
+
+    test(t['name'] / 'isolation',
+      python,
+      kwargs: test_kwargs,
+    )
+
+    testport = testport + 1
+  endif
+
+  # Define all 'tap' style tests
+  # FIXME: dependencies for each test
+  if are_tap_tests_enabled and 'tap' in test
+    t = test_default + test['tap']
+    test_command = [
+      perl.path(),
+      '-I', meson.source_root() / 'src/test/perl',
+      '-I', t['sd'],
+    ]
+
+    env = test_env
+
+    # Add temporary install, the build directory for non-installed binaries and
+    # also test/ for non-installed test binaries built separately.
+    env.prepend('PATH', temp_install_bindir, t['bd'], t['bd'] / 'test')
+
+    foreach name, value : t.get('env', {})
+      env.set(name, value)
+    endforeach
+
+    test_kwargs = {
+      'protocol': 'tap',
+      'suite': ['tap', t['name']],
+      'timeout': 1000,
+      'depends': test_deps + t.get('deps', []),
+      'env': env,
+    }
+
+    if t.has_key('test_kwargs')
+      test_kwargs += t['test_kwargs']
+    endif
+
+    foreach onetap : t['tests']
+      test(t['name'] / onetap,
+        python,
+        kwargs: test_kwargs,
+        args: [
+          testwrap.path(),
+          '--srcdir', t['sd'],
+          '--basedir', meson.build_root(),
+          '--builddir', t['bd'],
+          '--testgroup', t['name'],
+          '--testname', onetap,
+          test_command,
+          t['sd'] / onetap,
+        ]
+      )
+    endforeach
+  endif
+endforeach
+
+
+###############################################################
+# Pseudo targets
+###############################################################
+
+alias_target('backend', backend_targets)
+
+
+
+###############################################################
+# The End, The End, My Friend
+###############################################################
+
+if meson.version().version_compare('>=0.57')
+
+  summary({
+    'data block size' : cdata.get('BLCKSZ'),
+    'WAL block size' : cdata.get('XLOG_BLCKSZ'),
+    'segment size' : cdata.get('RELSEG_SIZE')
+    }, section: 'Data layout'
+  )
+
+  summary(
+    {
+      'host system' : '@0@ @1@'.format(host_system, host_cpu),
+      'build system' : '@0@ @1@'.format(build_system, build_cpu),
+    },
+    section: 'System'
+  )
+
+  summary(
+    {
+      'linker': '@0@'.format(cc.get_linker_id()),
+      'C compiler': '@0@ @1@'.format(cc.get_id(), cc.version()),
+    },
+    section: 'Compiler'
+  )
+
+  if llvm.found()
+    summary(
+      {
+        'C++ compiler': '@0@ @1@'.format(cpp.get_id(), cpp.version())
+      },
+      section: 'Compiler')
+  endif
+
+  summary(
+    {
+      'bison' : '@0@ @1@'.format(bison.full_path(), bison_version),
+    },
+    section: 'Programs'
+  )
+
+  summary(
+    {
+      'bonjour': bonjour,
+      'bsd_auth': bsd_auth,
+      'gss': gssapi,
+      'icu': icu,
+      'ldap': ldap,
+      'libxml': libxml,
+      'libxslt': libxslt,
+      'llvm': llvm,
+      'lz4': lz4,
+      'nls' : libintl,
+      'pam' : pam,
+      'perl': perl_dep,
+      'python3': python3_dep,
+      'readline': readline,
+      'selinux': selinux,
+      'ssl': ssl,
+      'systemd': systemd,
+      'tcl': tcl_dep,
+      'uuid': uuid,
+      'zlib': zlib,
+      'zstd': zstd,
+    },
+    section: 'External libraries'
+  )
+
+endif
diff --git a/meson_options.txt b/meson_options.txt
new file mode 100644
index 00000000000..3be176ca16b
--- /dev/null
+++ b/meson_options.txt
@@ -0,0 +1,175 @@
+# Data layout influencing options
+
+option('BLCKSZ', type : 'combo', choices : ['1', '2', '4', '8', '16', '32'], value : '8',
+  description: 'set table block size in kB')
+
+option('wal-blocksize', type : 'integer', value : 8,
+  description : '''WAL block size, in kilobytes.
+This is the unit of storage and I/O within the WAL log. The default, 8 kilobytes, is suitable for most situations; but other values may be useful in special cases. The value must be a power of 2 between 1 and 64 (kilobytes). Note that changing this value requires an initdb.'''
+  )
+
+option('segsize', type : 'integer', value : 1,
+  description : '''Segment size, in gigabytes.
+Large tables are divided into multiple operating-system files, each of size equal to the segment size. This avoids problems with file size limits that exist on many platforms. The default segment size, 1 gigabyte, is safe on all supported platforms. If your operating system has "largefile" support (which most do, nowadays), you can use a larger segment size. This can be helpful to reduce the number of file descriptors consumed when working with very large tables. But be careful not to select a value larger than is supported by your platform and the file systems you intend to use. Other tools you might wish to use, such as tar, could also set limits on the usable file size. It is recommended, though not absolutely required, that this value be a power of 2. Note that changing this value requires an initdb.'''
+  )
+
+
+# Miscellaneous options
+
+option('krb-srvnam', type : 'string', value : 'postgres',
+  description : '''The default name of the Kerberos service principal used by GSSAPI.
+postgres is the default. There's usually no reason to change this unless you are building for a Windows environment, in which case it must be set to upper case POSTGRES''')
+
+
+# Defaults
+
+option('pgport', type : 'string', value : '5432',
+  description : '''Default port number for server and clients.
+The default is 5432. The port can always be changed later on, but if you specify it here then both server and clients will have the same default compiled in, which can be very convenient. Usually the only good reason to select a non-default value is if you intend to run multiple PostgreSQL servers on the same machine.''')
+
+option('system-tzdata', type: 'string', value: '',
+  description: 'use system time zone data in specified directory')
+
+
+# Developer options
+
+option('cassert', type : 'boolean', value: false,
+  description: 'enable assertion checks (for debugging)')
+
+option('enable-tap-tests', type : 'boolean', value : true,
+  description : 'Whether to enable tap tests')
+
+option('PG_TEST_EXTRA', type : 'string', value: 'kerberos ldap ssl',
+  description: 'Enable selected extra tests')
+
+option('atomics', type : 'boolean', value: true,
+  description: 'whether to use atomic operations')
+
+option('spinlocks', type : 'boolean', value: true,
+  description: 'whether to use spinlocks')
+
+
+# Compilation options
+
+option('extra_include_dirs', type : 'array', value: [],
+  description: 'non-default directories to be searched for headers')
+
+option('extra_lib_dirs', type : 'array', value: [],
+  description: 'non-default directories to be searched for libs')
+
+option('extra_version', type : 'string', value: '',
+  description: 'append STRING to the PostgreSQL version number')
+
+
+# External dependencies
+
+option('bonjour', type : 'feature', value: 'auto',
+  description: 'build with Bonjour support')
+
+option('bsd-auth', type : 'feature', value: 'auto',
+  description: 'build with BSD Authentication support')
+
+option('dtrace', type : 'feature', value: 'disabled',
+  description: 'DTrace support')
+
+option('gssapi', type : 'feature', value: 'auto',
+  description: 'GSSAPI support')
+
+option('icu', type : 'feature', value: 'auto',
+  description: 'ICU support')
+
+option('ldap', type : 'feature', value: 'auto',
+  description: 'LDAP support')
+
+option('libedit_preferred', type : 'boolean', value: false,
+  description: 'Prefer BSD Libedit over GNU Readline')
+
+option('libxml', type : 'feature', value: 'auto',
+  description: 'XML support')
+
+option('libxslt', type : 'feature', value: 'auto',
+  description: 'XSLT support in contrib/xml2')
+
+option('llvm', type : 'feature', value: 'disabled',
+  description: 'whether to use llvm')
+
+option('lz4', type : 'feature', value: 'auto',
+  description: 'LZ4 support')
+
+option('nls', type: 'feature', value: 'auto',
+  description: 'native language support')
+
+option('pam', type : 'feature', value: 'auto',
+  description: 'build with PAM support')
+
+option('plperl', type : 'feature', value: 'auto',
+  description: 'build Perl modules (PL/Perl)')
+
+option('plpython', type : 'feature', value: 'auto',
+  description: 'build Python modules (PL/Python)')
+
+option('pltcl', type : 'feature', value: 'auto',
+  description: 'build with TCL support')
+
+option('tcl_version', type : 'string', value : 'tcl',
+  description: 'specify TCL version')
+
+option('readline', type : 'feature', value : 'auto',
+  description: 'use GNU Readline or BSD Libedit for editing')
+
+option('selinux', type : 'feature', value : 'disabled',
+  description: 'build with SELinux support')
+
+option('ssl', type : 'combo', choices : ['none', 'openssl'], value : 'none',
+  description: 'use LIB for SSL/TLS support (openssl)')
+
+option('systemd', type : 'feature', value: 'auto',
+  description: 'build with systemd support')
+
+option('uuid', type : 'combo', choices : ['none', 'bsd', 'e2fs', 'ossp'], value : 'none',
+  description: 'build contrib/uuid-ossp using LIB')
+
+option('zlib', type : 'feature', value: 'auto',
+  description: 'whether to use zlib')
+
+option('zstd', type : 'feature', value: 'auto',
+  description: 'whether to use zstd')
+
+
+# Programs
+
+option('BISON', type : 'string', value: 'bison',
+  description: 'path to bison binary')
+
+option('DTRACE', type : 'string', value: 'dtrace',
+  description: 'path to dtrace binary')
+
+option('FLEX', type : 'string', value: 'flex',
+  description: 'path to flex binary')
+
+option('GZIP', type : 'string', value: 'gzip',
+  description: 'path to gzip binary')
+
+option('LZ4', type : 'string', value: 'lz4',
+  description: 'path to lz4 binary')
+
+option('PERL', type : 'string', value: 'perl',
+  description: 'path to perl binary')
+
+option('PROVE', type : 'string', value: 'prove',
+  description: 'path to prove binary')
+
+option('PYTHON', type : 'array', value: ['python3', 'python'],
+  description: 'path to python binary')
+
+option('SED', type : 'string', value: 'gsed',
+  description: 'path to sed binary')
+
+option('TAR', type : 'string', value: 'tar',
+  description: 'path to tar binary')
+
+option('ZSTD', type : 'string', value: 'zstd',
+  description: 'path to zstd binary')
+
+option('ZIC', type : 'string', value: 'zic',
+  description: 'path to zic binary, when cross-compiling')
diff --git a/src/meson.build b/src/meson.build
new file mode 100644
index 00000000000..f64fdc15c2b
--- /dev/null
+++ b/src/meson.build
@@ -0,0 +1,269 @@
+# libraries that other subsystems might depend uppon first, in their
+# respective dependency order
+
+subdir('timezone')
+
+subdir('backend')
+
+subdir('bin')
+
+subdir('pl')
+
+subdir('interfaces')
+
+
+### Generate a Makefile.global that's complete enough for PGXS to work.
+#
+# This is somewhat ugly, but allows extensions to only use a single
+# buildsystem across all the supported postgres versions. Once all supported
+# PG versions support meson, we can remove all of this.
+#
+# XXX: Should we make this optional?
+
+pgxs_kv = {
+  'PACKAGE_URL': pg_url,
+  'PACKAGE_VERSION': pg_version,
+  'PG_MAJORVERSION': pg_version_major,
+  'PG_VERSION_NUM': pg_version_num,
+  'configure_input': 'meson',
+
+  'vpath_build': 'yes',
+  'autodepend': 'no', # XXX: Should we just set this to true when possible?
+
+  'host_cpu': host_cpu,
+  'host': '@0@-@1@'.format(host_cpu, host_system),
+  'host_os': host_system,
+  'build_os': build_system,
+  'PORTNAME': host_system,
+
+  'abs_top_builddir': meson.build_root(),
+  'abs_top_srcdir': meson.source_root(),
+
+  'enable_thread_safety': 'yes',
+  'enable_rpath': 'yes',
+  'enable_nls': libintl.found() ? 'yes' : 'no',
+  'enable_tap_tests': get_option('enable-tap-tests') ? 'yes' : 'no',
+  'enable_debug': get_option('debug') ? 'yes' : 'no',
+  'enable_coverage': get_option('b_coverage') ? 'yes' : 'no',
+  'enable_dtrace': dtrace.found() ? 'yes' : 'no',
+
+  'DLSUFFIX': dlsuffix,
+  'EXEEXT': exesuffix,
+
+  'SUN_STUDIO_CC': 'no',
+
+  'default_port': get_option('pgport'),
+  'with_system_tzdata': get_option('system-tzdata'),
+
+  'with_krb_srvnam': get_option('krb-srvnam'),
+  'krb_srvtab': krb_srvtab,
+
+  # FIXME: implement programs.m4 logic in PGAC_CHECK_STRIP
+  'STRIP': 'strip',
+  'STRIP_STATIC_LIB': 'strip -x',
+  'STRIP_SHARED_LIB': 'strip --strip-unneeded',
+
+  # Just always use the install_sh fallback that autoconf uses. Unlikely to
+  # matter performance-wise for extensions. If it turns out to do, we can
+  # improve that later.
+  'MKDIR_P': ' '.join([install_sh.path(), '-d']),
+
+  'CC': var_cc,
+  'CPP': var_cpp,
+  'GCC': cc.get_argument_syntax() == 'gcc' ? 'yes' : 'no',
+  'with_gnu_ld': (cc.get_linker_id() in ['ld.bfd', 'ld.gold', 'ld.lld'] ? 'yes' : 'no'),
+
+  'CFLAGS': var_cflags,
+  'CPPFLAGS': var_cppflags,
+  'CXXFLAGS': var_cxxflags,
+  'CFLAGS_SL': var_cflags_sl,
+  'CFLAGS_SL_MOD': cdata.has('HAVE_VISIBILITY_ATTRIBUTE') ? '-fvisibility=hidden' : '',
+  'CFLAGS_SSE42': ' '.join(cflags_crc),
+  'CFLAGS_UNROLL_LOOPS': ' '.join(unroll_loops_cflags),
+  'CFLAGS_VECTORIZE': ' '.join(vectorize_cflags),
+
+  # FIXME:
+  'CFLAGS_ARMV8_CRC32C': '',
+  'BITCODE_CFLAGS': '',
+  'BITCODE_CXXFLAGS': '',
+
+  'LDFLAGS': var_ldflags,
+  'LDFLAGS_EX': var_ldflags_ex,
+  'LDFLAGS_SL': var_ldflags_sl,
+
+  'BISONFLAGS': ' '.join(bison_flags),
+  'FLEXFLAGS': ' '.join(flex_flags),
+
+  'LIBS': var_libs,
+}
+
+if llvm.found()
+  pgxs_kv += {
+    'CLANG': clang.path(),
+    'CXX': ' '.join(cpp.cmd_array()),
+    'LLVM_BINPATH': llvm_binpath,
+  }
+else
+  pgxs_kv += {
+    'CLANG': '',
+    'CXX': '',
+    'LLVM_BINPATH': '',
+  }
+endif
+
+pgxs_cdata = configuration_data(pgxs_kv)
+
+# FIXME: figure out which platforms we still need the linker "directly" -
+# can't be many?
+
+ld_program = find_program(cc.get_linker_id(), native: true, required: false)
+
+pgxs_bins = {
+  'BISON': bison,
+  'FLEX': flex,
+  'GZIP': gzip,
+  'LZ4': program_lz4,
+  'PERL': perl,
+  'PROVE': prove,
+  'PYTHON': python,
+  'TAR': tar,
+  'ZSTD': program_zstd,
+  'DTRACE': dtrace,
+  'LD': ld_program,
+  'install_bin': install_sh,
+}
+foreach b, p : pgxs_bins
+  pgxs_cdata.set(b, p.found() ? p.path() : '')
+endforeach
+
+pgxs_cdata.set('have_win32_dbghelp', 'no') # FIXME
+
+pgxs_empty = [
+  'PERMIT_DECLARATION_AFTER_STATEMENT',
+  'PG_SYSROOT', #?
+  'ICU_CFLAGS', # needs to be added, included by public server headers
+
+  # probably need most of these?
+  'RANLIB',
+  'WINDRES',
+  'DLLTOOL',
+  'DLLWRAP',
+  'LN_S',
+  'AR',
+  'AWK',
+
+  # hard to see why we'd need either?
+  'ZIC',
+  'TCLSH',
+
+  # docs don't seem to be supported by pgxs
+  'XMLLINT',
+  'XSLTPROC',
+  'DBTOEPUB',
+  'FOP',
+
+  # supporting coverage for pgxs-in-meson build doesn't seem worth it
+  'GENHTML',
+  'LCOV',
+  'GCOV',
+  'MSGFMT_FLAGS',
+
+  # translation doesn't appear to be supported by pgxs
+  'MSGFMT',
+  'XGETTEXT',
+  'MSGMERGE',
+  'WANTED_LANGUAGES',
+
+  # Not needed because we don't build the server / PLs with the generated makefile
+  'LIBOBJS', 'PG_CRC32C_OBJS', 'TAS',
+  'DTRACEFLAGS', # only server has dtrace probes
+
+  'perl_archlibexp', 'perl_embed_ccflags', 'perl_embed_ldflags', 'perl_includespec', 'perl_privlibexp',
+  'python_additional_libs', 'python_includespec', 'python_libdir', 'python_libspec', 'python_majorversion', 'python_version',
+
+  # possible that some of these are referenced explicitly in pgxs makefiles?
+  # For now not worth it.
+  'TCL_INCLUDE_SPEC', 'TCL_LIBS', 'TCL_LIB_SPEC', 'TCL_SHARED_BUILD', 'TCL_SHLIB_LD_LIBS',
+
+  'LLVM_CFLAGS', 'LLVM_CPPFLAGS', 'LLVM_CXXFLAGS', 'LLVM_LIBS',
+
+  'LDAP_LIBS_BE', 'LDAP_LIBS_FE',
+
+  'UUID_LIBS',
+
+  'PTHREAD_CFLAGS', 'PTHREAD_LIBS',
+
+  'ICU_LIBS',
+]
+
+foreach pe : pgxs_empty
+  pgxs_cdata.set(pe, '')
+endforeach
+
+pgxs_dirs = {
+  'prefix': get_option('prefix'),
+
+  'bindir': '${exec_prefix}' / get_option('bindir'),
+  'datarootdir': '${prefix}' / get_option('datadir'),
+  'datadir': '${datarootdir}',
+  'docdir': '${prefix}' / dir_doc,
+  'exec_prefix': '${prefix}',
+  'htmldir': '${prefix}' / dir_doc_html, #?
+  'includedir': '${prefix}' / get_option('includedir'),
+  'libdir': '${exec_prefix}' / get_option('libdir'),
+  'localedir': '${prefix}' / get_option('localedir'),
+  'mandir': '${prefix}' / get_option('mandir'),
+  'sysconfdir': '${prefix}' / get_option('sysconfdir'),
+}
+
+foreach d, p : pgxs_dirs
+  pgxs_cdata.set(d, p)
+endforeach
+
+pgxs_deps = {
+  'bonjour': bonjour,
+  'bsd_auth': bsd_auth,
+  'gssapi': gssapi,
+  'icu': icu,
+  'ldap': ldap,
+  'libxml': libxml,
+  'libxslt': libxslt,
+  'llvm': llvm,
+  'lz4': lz4,
+  'nls' : libintl,
+  'pam' : pam,
+  'perl': perl_dep,
+  'python': python3_dep,
+  'readline': readline,
+  'selinux': selinux,
+  'systemd': systemd,
+  'tcl': tcl_dep,
+  'zlib': zlib,
+  'zstd': zstd,
+}
+foreach d, v : pgxs_deps
+  pgxs_cdata.set('with_@0@'.format(d), v.found() ? 'yes' : 'no')
+endforeach
+
+pgxs_cdata.set('with_ssl', get_option('ssl'))
+pgxs_cdata.set('with_uuid', uuidopt)
+
+pg_config_ext = configure_file(input: 'Makefile.global.in',
+  output : 'Makefile.global',
+  configuration : pgxs_cdata,
+  install: true,
+  install_dir: dir_pgxs / 'src')
+
+configure_file(
+  input: 'makefiles' / 'Makefile.@0@'.format(host_system),
+  output: 'Makefile.port',
+  copy: true,
+  install_dir: dir_pgxs / 'src')
+
+install_data(
+  'Makefile.shlib', 'nls-global.mk',
+  install_dir: dir_pgxs / 'src')
+
+install_data(
+  'makefiles/pgxs.mk',
+  install_dir: dir_pgxs / 'src' / 'makefiles')
diff --git a/src/timezone/meson.build b/src/timezone/meson.build
new file mode 100644
index 00000000000..799fc5ea7a8
--- /dev/null
+++ b/src/timezone/meson.build
@@ -0,0 +1,53 @@
+# files to build into backend
+timezone_sources = files(
+  'localtime.c',
+  'pgtz.c',
+  'strftime.c',
+)
+
+
+timezone_inc = include_directories('.')
+
+timezone_localtime_source = files('localtime.c')
+
+# files needed to build zic utility program
+zic_sources = files(
+   'zic.c'
+)
+
+# we now distribute the timezone data as a single file
+tzdata = files(
+  'data/tzdata.zi'
+)
+
+
+if get_option('system-tzdata') == ''
+  # FIXME: For cross builds, it would need a native built libpgport/pgcommon to
+  # build our zic. But for that we'd need to run a good chunk of the configure
+  # tests both natively and cross. Unclear if it's worth it.
+  if meson.is_cross_build()
+    zic = find_program(get_option('ZIC'), native: true, required: true)
+  else
+    zic = executable('zic', zic_sources,
+                     dependencies: [frontend_code],
+                     kwargs: default_bin_args + {'install': false}
+                    )
+  endif
+
+  tzdata = custom_target('tzdata',
+    input: tzdata,
+    output: ['timezone'],
+    command: [zic, '-d', '@OUTPUT@', '@INPUT@'],
+    install: true,
+    install_dir: dir_data,
+  )
+
+# FIXME: this used to be sorted - but also isn't actually used
+abbrevs_txt = custom_target('abbrevs.txt',
+  input: tzdata,
+  output: ['abbrevs.txt'],
+  command: [zic, '-P', '-b', 'fat', 'junkdir', '@INPUT@'],
+  capture: true)
+endif
+
+subdir('tznames')
diff --git a/src/timezone/tznames/meson.build b/src/timezone/tznames/meson.build
new file mode 100644
index 00000000000..7e0a682bd9e
--- /dev/null
+++ b/src/timezone/tznames/meson.build
@@ -0,0 +1,21 @@
+tznames = files(
+  'Africa.txt',
+  'America.txt',
+  'Antarctica.txt',
+  'Asia.txt',
+  'Atlantic.txt',
+  'Australia.txt',
+  'Etc.txt',
+  'Europe.txt',
+  'Indian.txt',
+  'Pacific.txt',
+)
+
+tznames_sets = files(
+  'Default',
+  'Australia',
+  'India')
+
+install_data(tznames, tznames_sets,
+  install_dir: dir_data / 'timezonesets',
+)
diff --git a/src/tools/find_meson b/src/tools/find_meson
new file mode 100755
index 00000000000..9ee5aca19a4
--- /dev/null
+++ b/src/tools/find_meson
@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+
+import os
+import shlex
+import sys
+
+mesonintrospect = os.environ['MESONINTROSPECT']
+components = shlex.split(mesonintrospect)
+
+if len(components) < 2:
+    print('expected more than two components, got: %s' % components)
+    sys.exit(1)
+
+if components[-1] != 'introspect':
+    print('expected introspection at the end')
+    sys.exit(1)
+
+print('\n'.join(components[:-1]), end='')
+
+sys.exit(0)
diff --git a/src/tools/irlink b/src/tools/irlink
new file mode 100644
index 00000000000..7d3f49da427
--- /dev/null
+++ b/src/tools/irlink
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+import os
+import shutil
+import subprocess
+import sys
+import argparse
+
+parser = argparse.ArgumentParser(description='generate PostgreSQL JIT IR module')
+
+parser.add_argument('--name', type=str, required=True)
+parser.add_argument('--lto', type=str, required=True)
+parser.add_argument('--privdir', type=str, required=True)
+parser.add_argument('--outdir', type=str, required=True)
+parser.add_argument('INPUT', type=str, nargs='+')
+
+args = parser.parse_args()
+
+outdir = os.path.realpath(args.outdir)
+privdir = os.path.realpath(args.privdir)
+
+#index = os.path.realpath(args.index)
+index = '{0}/{1}.index.bc'.format(outdir, args.name)
+destdir = '{0}/{1}'.format(outdir, args.name)
+
+# Remove old contents if exist
+if os.path.exists(destdir):
+  shutil.rmtree(destdir)
+
+shutil.copytree(privdir, destdir)
+
+# Change working directory for irlink to link correctly
+os.chdir(args.outdir)
+
+file_names = [args.name + input.replace(args.privdir, '') for input in args.INPUT]
+command = [args.lto, '-thinlto', '-thinlto-action=thinlink', '-o', index] + file_names
+res = subprocess.run(command)
+
+exit(res.returncode)
diff --git a/src/tools/msvc/export2def.pl b/src/tools/msvc/export2def.pl
new file mode 100644
index 00000000000..fb88e8b8ab9
--- /dev/null
+++ b/src/tools/msvc/export2def.pl
@@ -0,0 +1,22 @@
+# Copyright (c) 2021, PostgreSQL Global Development Group
+
+use strict;
+use warnings;
+use 5.8.0;
+use List::Util qw(max);
+
+my ($deffile, $txtfile, $libname) = @ARGV;
+
+print STDERR "Generating $deffile...\n";
+open(my $if, '<', $txtfile) || die("Could not open $txtfile\n");
+open(my $of, '>', $deffile) || die("Could not open $deffile for writing\n");
+print $of "LIBRARY $libname\nEXPORTS\n";
+while (<$if>)
+{
+	next if (/^#/);
+	next if (/^\s*$/);
+	my ($f, $o) = split;
+	print $of " $f @ $o\n";
+}
+close($of);
+close($if);
diff --git a/src/tools/msvc/gendef2.pl b/src/tools/msvc/gendef2.pl
new file mode 100644
index 00000000000..3b905d6f5da
--- /dev/null
+++ b/src/tools/msvc/gendef2.pl
@@ -0,0 +1,177 @@
+
+# Copyright (c) 2021, PostgreSQL Global Development Group
+
+use strict;
+use warnings;
+use 5.8.0;
+use List::Util qw(max);
+
+my @def;
+
+#
+# Script that generates a .DEF file for all objects in a directory
+#
+# src/tools/msvc/gendef.pl
+#
+
+# Given a symbol file path, loops over its contents
+# and returns a list of symbols of interest as a dictionary
+# of 'symbolname' -> symtype, where symtype is:
+#
+#     0    a CODE symbol, left undecorated in the .DEF
+#     1    A DATA symbol, i.e. global var export
+#
+sub extract_syms
+{
+	my ($symfile, $def) = @_;
+	open(my $f, '<', $symfile) || die "Could not open $symfile: $!\n";
+	while (<$f>)
+	{
+
+		# Expected symbol lines look like:
+		#
+		# 0   1        2      3            4            5 6
+		# IDX SYMBOL   SECT   SYMTYPE      SYMSTATIC      SYMNAME
+		# ------------------------------------------------------------------------
+		# 02E 00000130 SECTA  notype       External     | _standbyState
+		# 02F 00000009 SECT9  notype       Static       | _LocalRecoveryInProgress
+		# 064 00000020 SECTC  notype ()    Static       | _XLogCheckBuffer
+		# 065 00000000 UNDEF  notype ()    External     | _BufferGetTag
+		#
+		# See http://msdn.microsoft.com/en-us/library/b842y285.aspx
+		#
+		# We're not interested in the symbol index or offset.
+		#
+		# SECT[ION] is only examined to see whether the symbol is defined in a
+		# COFF section of the local object file; if UNDEF, it's a symbol to be
+		# resolved at link time from another object so we can't export it.
+		#
+		# SYMTYPE is always notype for C symbols as there's no typeinfo and no
+		# way to get the symbol type from name (de)mangling. However, we care
+		# if "notype" is suffixed by "()" or not. The presence of () means the
+		# symbol is a function, the absence means it isn't.
+		#
+		# SYMSTATIC indicates whether it's a compilation-unit local "static"
+		# symbol ("Static"), or whether it's available for use from other
+		# compilation units ("External"). We export all symbols that aren't
+		# static as part of the whole program DLL interface to produce UNIX-like
+		# default linkage.
+		#
+		# SYMNAME is, obviously, the symbol name. The leading underscore
+		# indicates that the _cdecl calling convention is used. See
+		# http://www.unixwiz.net/techtips/win32-callconv.html
+		# http://www.codeproject.com/Articles/1388/Calling-Conventions-Demystified
+		#
+		s/notype \(\)/func/g;
+		s/notype/data/g;
+
+		my @pieces = split;
+
+		# Skip file and section headers and other non-symbol entries
+		next unless defined($pieces[0]) and $pieces[0] =~ /^[A-F0-9]{3,}$/;
+
+		# Skip blank symbol names
+		next unless $pieces[6];
+
+		# Skip externs used from another compilation unit
+		next if ($pieces[2] eq "UNDEF");
+
+		# Skip static symbols
+		next unless ($pieces[4] eq "External");
+
+		# Skip some more MSVC-generated crud
+		next if $pieces[6] =~ /^@/;
+		next if $pieces[6] =~ /^\(/;
+
+		# __real and __xmm are out-of-line floating point literals and
+		# (for __xmm) their SIMD equivalents. They shouldn't be part
+		# of the DLL interface.
+		next if $pieces[6] =~ /^__real/;
+		next if $pieces[6] =~ /^__xmm/;
+
+		# __imp entries are imports from other DLLs, eg __imp__malloc .
+		# (We should never have one of these that hasn't already been skipped
+		# by the UNDEF test above, though).
+		next if $pieces[6] =~ /^__imp/;
+
+		# More under-documented internal crud
+		next if $pieces[6] =~ /NULL_THUNK_DATA$/;
+		next if $pieces[6] =~ /^__IMPORT_DESCRIPTOR/;
+		next if $pieces[6] =~ /^__NULL_IMPORT/;
+
+		# Skip string literals
+		next if $pieces[6] =~ /^\?\?_C/;
+
+		# We assume that if a symbol is defined as data, then as a function,
+		# the linker will reject the binary anyway. So it's OK to just pick
+		# whatever came last.
+		$def->{ $pieces[6] } = $pieces[3];
+	}
+	close($f);
+	return;
+}
+
+sub writedef
+{
+	my ($deffile, $platform, $def) = @_;
+	open(my $fh, '>', $deffile) || die "Could not write to $deffile\n";
+	print $fh "EXPORTS\n";
+	foreach my $f (sort keys %{$def})
+	{
+		my $isdata = $def->{$f} eq 'data';
+
+		# Strip the leading underscore for win32, but not x64
+		$f =~ s/^_//
+		  unless ($platform eq "x64");
+
+		# Emit just the name if it's a function symbol, or emit the name
+		# decorated with the DATA option for variables.
+		if ($isdata)
+		{
+			print $fh "  $f DATA\n";
+		}
+		else
+		{
+			print $fh "  $f\n";
+		}
+	}
+	close($fh);
+	return;
+}
+
+
+sub usage
+{
+	die(    "Usage: gendef.pl platform outputfile tempdir sourcelib\n"
+		  . "    modulepath: path to dir with obj files, no trailing slash"
+		  . "    platform: Win32 | x64");
+}
+
+usage()
+  unless scalar(@ARGV) >= 4;
+
+my $platform  = $ARGV[0];
+shift;
+my $deffile  = $ARGV[0];
+shift;
+my $tempdir  = $ARGV[0];
+shift;
+
+print STDERR "Generating $deffile in tmp dir $tempdir from ".join(' ', @ARGV)."\n";
+
+my %def = ();
+
+my $symfile = "$tempdir/all.sym";
+my $tmpfile = "$tempdir/tmp.sym";
+mkdir($tempdir);
+print STDERR "dumpbin /symbols /out:$tmpfile ".join(' ', @ARGV)."\n";
+system("dumpbin /symbols /out:$tmpfile ".join(' ', @ARGV))
+  && die "Could not call dumpbin";
+rename($tmpfile, $symfile);
+print "generated symfile to $symfile (via $tmpfile)\n";
+extract_syms($symfile, \%def);
+print "\n";
+
+writedef($deffile, $platform, \%def);
+
+print "Generated " . scalar(keys(%def)) . " symbols\n";
diff --git a/src/tools/pgflex b/src/tools/pgflex
new file mode 100755
index 00000000000..13d73d50cb4
--- /dev/null
+++ b/src/tools/pgflex
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+
+import argparse
+import os
+import subprocess
+import sys
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument('--flex', dest='flex_command', help='flex executable to run', type=str)
+parser.add_argument('--perl', dest='perl_command', help='perl executable to run', type=str)
+parser.add_argument('--builddir', dest='builddir', help='build directory of meson build', type=str)
+parser.add_argument('--privatedir', dest='privatedir', help='temporary directory to avoid conflicts', type=str)
+parser.add_argument('--fix_warning_script', dest='fix_warning_script', help='script for fixing warnings', default='')
+parser.add_argument('-b', dest='no_backup', action='store_true', help='whether no_backup is enabled or not')
+parser.add_argument('-o', dest='output_file', help='output file')
+parser.add_argument('--stamp_header', dest='stamp_header', help='', default=None)
+
+args, rest = parser.parse_known_args()
+rest, input_file = rest[:-1], rest[-1]
+
+# since 'lex.backup' is always named that,
+# change working directory to temporary directory
+# to avoid conflicts
+os.chdir(os.path.dirname(args.privatedir))
+
+# make paths absolute if it is not absolute,
+# msbuild uses absolute paths as default
+args.output_file = args.output_file if os.path.isabs(args.output_file) else os.path.join(args.builddir, args.output_file)
+input_file = input_file if os.path.isabs(input_file) else os.path.join(args.builddir, input_file)
+
+# set flex flags
+if args.no_backup:
+  flex_flags = ['-o', args.output_file, '-b'] + rest + [input_file]
+else:
+  flex_flags = ['-o', args.output_file] + rest + [input_file]
+
+# create .c file from .l file
+command = [args.flex_command] + flex_flags
+subprocess.run(command, check=True)
+
+ # check lex.backup
+if args.no_backup:
+  with open('lex.backup') as lex:
+    if sum(1 for _ in lex) != 1:
+      sys.exit('Scanner requires backup; see lex.backup.')
+  os.remove('lex.backup')
+
+# fix warnings
+if args.fix_warning_script:
+  # make paths absolute if it is not absolute
+  args.fix_warning_script = args.fix_warning_script if os.path.isabs(args.fix_warning_script) else os.path.join(args.builddir, args.fix_warning_script)
+
+  command = [args.perl_command, args.fix_warning_script, args.output_file]
+  subprocess.run(command, check=True)
+
+#
+stamp_header = args.stamp_header
+if stamp_header != None:
+    if not os.path.isabs(stamp_header):
+        stamp_header = os.path.join(args.builddir, stamp_header)
+    with open(stamp_header, mode='w') as fh:
+        pass
diff --git a/src/tools/rcgen b/src/tools/rcgen
new file mode 100755
index 00000000000..ab35e952959
--- /dev/null
+++ b/src/tools/rcgen
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import argparse
+
+parser = argparse.ArgumentParser(description='generate PostgreSQL rc file')
+
+parser.add_argument('INPUT', type=argparse.FileType('r'))
+parser.add_argument('-o', '--output', type=argparse.FileType('w'), required=True)
+parser.add_argument('--depfile', type=argparse.FileType('w'), required=False)
+
+parser.add_argument('--FILEDESC', type=str, required=True)
+parser.add_argument('--NAME', type=str, required=True)
+parser.add_argument('--VFT_TYPE', type=str, required=True)
+parser.add_argument('--FILEENDING', type=str, required=True)
+parser.add_argument('--ICO', type=str)
+
+
+args = parser.parse_args()
+
+data = args.INPUT.read()
+
+data = data.replace('@FILEDESC@', args.FILEDESC)
+data = data.replace('@NAME@', args.NAME)
+data = data.replace('@VFT_TYPE@', args.VFT_TYPE)
+data = data.replace('@FILEENDING@', args.FILEENDING)
+
+if args.ICO:
+   data = data.replace('@ICO@', args.ICO)
+   if args.depfile:
+       args.depfile.write("{0} : {1}\n".format(args.INPUT.name, args.ICO))
+else:
+   data = data.replace("IDI_ICON ICON \"@ICO@\"\n", '')
+
+args.output.write(data)
diff --git a/src/tools/relativize_shared_library_references b/src/tools/relativize_shared_library_references
new file mode 100755
index 00000000000..db6431639f1
--- /dev/null
+++ b/src/tools/relativize_shared_library_references
@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+# -*-python-*-
+
+# This script updates a macos postgres installation to reference all internal
+# shared libraries using rpaths, leaving absolute install_names in the
+# libraries themselves intact.
+
+import os
+import shlex
+import sys
+import json
+import subprocess
+import shutil
+
+
+def installed_path(destdir, path):
+    if destdir is not None:
+        return f'{destdir}{path}'
+    else:
+        return path
+
+
+def collect_information():
+    shared_libraries = []
+    executables = []
+    shared_modules = []
+
+    targets = json.load(open(os.path.join(build_root, 'meson-info', 'intro-targets.json')))
+    installed = json.load(open(os.path.join(build_root, 'meson-info', 'intro-installed.json')))
+
+    for target in targets:
+        if not target['installed']:
+            continue
+
+        filenames = target['filename']
+
+        if target['type'] == 'shared library':
+            assert(len(filenames) == 1)
+            filename = filenames[0]
+
+            shared_libraries.append(installed[filename])
+
+        if target['type'] == 'executable':
+            assert(len(filenames) == 1)
+            filename = filenames[0]
+            executables.append(installed[filename])
+
+        if target['type'] == 'shared module':
+            assert(len(filenames) == 1)
+            filename = filenames[0]
+            shared_modules.append(installed[filename])
+
+    return shared_libraries, executables, shared_modules
+
+
+def patch_references(destdir, shared_libraries, executables, shared_modules):
+    install_name_tool = [shutil.which('install_name_tool')]
+
+    for lib in shared_libraries:
+        libname = os.path.basename(lib)
+        libpath = installed_path(destdir, lib)
+        newref = f'@rpath/{libname}'
+
+        for patch in shared_modules + executables:
+            patchpath = installed_path(destdir, patch)
+
+            #print(f'in {patchpath} replace reference to {libpath} with {newref}')
+            if not os.path.exists(patchpath):
+                print(f"path {patchpath} doesn't exist", file=sys.stderr)
+                sys.exit(1)
+
+            subprocess.check_call(install_name_tool + ['-change', lib, newref, patchpath])
+
+
+if __name__ == '__main__':
+    build_root = os.environ['MESON_BUILD_ROOT']
+    destdir = os.environ.get('DESTDIR', None)
+
+    print(f'making references to shared libraries relative, destdir is {destdir}', file=sys.stderr)
+
+    shared_libraries, executables, shared_modules = collect_information()
+    patch_references(destdir, shared_libraries, executables, shared_modules)
+
+    sys.exit(0)
diff --git a/src/tools/relpath.py b/src/tools/relpath.py
new file mode 100755
index 00000000000..87bcb496ab5
--- /dev/null
+++ b/src/tools/relpath.py
@@ -0,0 +1,6 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+
+print(os.path.relpath(sys.argv[2], start=sys.argv[1]))
diff --git a/src/tools/testwrap b/src/tools/testwrap
new file mode 100755
index 00000000000..c93fea42c97
--- /dev/null
+++ b/src/tools/testwrap
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import argparse
+import shutil
+import subprocess
+import os
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument('--srcdir', help='source directory of test', type=str)
+parser.add_argument('--basedir', help='base directory of test', type=str)
+parser.add_argument('--builddir', help='build directory of meson build', type=str)
+parser.add_argument('--testgroup', help='test group', type=str)
+parser.add_argument('--testname', help='test name', type=str)
+
+args, test_command = parser.parse_known_args()
+
+args.testname = args.testname.rstrip('.pl')
+
+testdir = '{}/testrun/{}/{}'.format(args.basedir, args.testgroup, args.testname)
+
+print('# executing test in {} group {} test {}, builddir {}'
+  .format(testdir, args.testgroup, args.testname, args.builddir))
+
+if os.path.exists(testdir) and os.path.isdir(testdir):
+  shutil.rmtree(testdir)
+os.makedirs(testdir)
+
+os.chdir(args.srcdir)
+
+env_dict = {**os.environ, 'TESTOUTDIR': testdir, 'TESTDIR': args.builddir}
+subprocess.run(test_command, env=env_dict, check=True)
-- 
2.37.0.3.g30cc8d0f14

