From d1ffce7141cd34eff9d0d3f65f5e18f472b6d813 Mon Sep 17 00:00:00 2001
From: Thomas Munro <thomas.munro@gmail.com>
Date: Sun, 30 Apr 2023 10:38:46 +1200
Subject: [PATCH 06/11] Detect copy_file_range() function.

---
 configure                  | 2 +-
 configure.ac               | 1 +
 meson.build                | 1 +
 src/include/pg_config.h.in | 3 +++
 src/tools/msvc/Solution.pm | 1 +
 5 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 47ba18491c..7d351b9614 100755
--- a/configure
+++ b/configure
@@ -15700,7 +15700,7 @@ fi
 LIBS_including_readline="$LIBS"
 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
 
-for ac_func in backtrace_symbols copyfile getifaddrs getpeerucred inet_pton kqueue mbstowcs_l memset_s posix_fallocate ppoll pthread_is_threaded_np setproctitle setproctitle_fast strchrnul strsignal syncfs sync_file_range uselocale wcstombs_l
+for ac_func in backtrace_symbols copyfile copy_file_range getifaddrs getpeerucred inet_pton kqueue mbstowcs_l memset_s posix_fallocate ppoll pthread_is_threaded_np setproctitle setproctitle_fast strchrnul strsignal syncfs sync_file_range uselocale wcstombs_l
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
diff --git a/configure.ac b/configure.ac
index 2b3b1b4dca..ddb82e9433 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1794,6 +1794,7 @@ LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
 AC_CHECK_FUNCS(m4_normalize([
 	backtrace_symbols
 	copyfile
+	copy_file_range
 	getifaddrs
 	getpeerucred
 	inet_pton
diff --git a/meson.build b/meson.build
index 096044628c..c06e4f9290 100644
--- a/meson.build
+++ b/meson.build
@@ -2404,6 +2404,7 @@ func_checks = [
   ['backtrace_symbols', {'dependencies': [execinfo_dep]}],
   ['clock_gettime', {'dependencies': [rt_dep, posix4_dep], 'define': false}],
   ['copyfile'],
+  ['copy_file_range'],
   # gcc/clang's sanitizer helper library provides dlopen but not dlsym, thus
   # when enabling asan the dlopen check doesn't notice that -ldl is actually
   # required. Just checking for dlsym() ought to suffice.
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
index 6d572c3820..0b26836f68 100644
--- a/src/include/pg_config.h.in
+++ b/src/include/pg_config.h.in
@@ -85,6 +85,9 @@
 /* Define to 1 if you have the <copyfile.h> header file. */
 #undef HAVE_COPYFILE_H
 
+/* Define to 1 if you have the `copy_file_range' function. */
+#undef HAVE_COPY_FILE_RANGE
+
 /* Define to 1 if you have the <crtdefs.h> header file. */
 #undef HAVE_CRTDEFS_H
 
diff --git a/src/tools/msvc/Solution.pm b/src/tools/msvc/Solution.pm
index ef10cda576..671d958af7 100644
--- a/src/tools/msvc/Solution.pm
+++ b/src/tools/msvc/Solution.pm
@@ -230,6 +230,7 @@ sub GenerateFiles
 		HAVE_COMPUTED_GOTO         => undef,
 		HAVE_COPYFILE              => undef,
 		HAVE_COPYFILE_H            => undef,
+		HAVE_COPY_FILE_RANGE       => undef,
 		HAVE_CRTDEFS_H             => undef,
 		HAVE_CRYPTO_LOCK           => undef,
 		HAVE_DECL_FDATASYNC        => 0,
-- 
2.40.1