commit 74986720979c1c2bb39a58133563fd8da82c301b
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date:   Tue Nov 27 15:33:18 2012 -0300

    Split SQL-callable function declarations into xlog_fn.h
    
    This lets xlog_internal.h go without including fmgr.h, which is useful
    to let it compile in a frontend-only environment.

diff --git a/src/backend/access/transam/xlogfuncs.c b/src/backend/access/transam/xlogfuncs.c
index d345761..40c0bd6 100644
--- a/src/backend/access/transam/xlogfuncs.c
+++ b/src/backend/access/transam/xlogfuncs.c
@@ -18,6 +18,7 @@
 
 #include "access/htup_details.h"
 #include "access/xlog.h"
+#include "access/xlog_fn.h"
 #include "access/xlog_internal.h"
 #include "access/xlogutils.h"
 #include "catalog/catalog.h"
diff --git a/src/include/access/xlog_fn.h b/src/include/access/xlog_fn.h
new file mode 100644
index 0000000..65376fe
--- /dev/null
+++ b/src/include/access/xlog_fn.h
@@ -0,0 +1,35 @@
+/*
+ * xlog_fn.h
+ *
+ * PostgreSQL transaction log SQL-callable function declarations
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/access/xlog_fn.h
+ */
+#ifndef XLOG_FN_H
+#define XLOG_FN_H
+
+#include "fmgr.h"
+
+extern Datum pg_start_backup(PG_FUNCTION_ARGS);
+extern Datum pg_stop_backup(PG_FUNCTION_ARGS);
+extern Datum pg_switch_xlog(PG_FUNCTION_ARGS);
+extern Datum pg_create_restore_point(PG_FUNCTION_ARGS);
+extern Datum pg_current_xlog_location(PG_FUNCTION_ARGS);
+extern Datum pg_current_xlog_insert_location(PG_FUNCTION_ARGS);
+extern Datum pg_last_xlog_receive_location(PG_FUNCTION_ARGS);
+extern Datum pg_last_xlog_replay_location(PG_FUNCTION_ARGS);
+extern Datum pg_last_xact_replay_timestamp(PG_FUNCTION_ARGS);
+extern Datum pg_xlogfile_name_offset(PG_FUNCTION_ARGS);
+extern Datum pg_xlogfile_name(PG_FUNCTION_ARGS);
+extern Datum pg_is_in_recovery(PG_FUNCTION_ARGS);
+extern Datum pg_xlog_replay_pause(PG_FUNCTION_ARGS);
+extern Datum pg_xlog_replay_resume(PG_FUNCTION_ARGS);
+extern Datum pg_is_xlog_replay_paused(PG_FUNCTION_ARGS);
+extern Datum pg_xlog_location_diff(PG_FUNCTION_ARGS);
+extern Datum pg_is_in_backup(PG_FUNCTION_ARGS);
+extern Datum pg_backup_start_time(PG_FUNCTION_ARGS);
+
+#endif   /* XLOG_FN_H */
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h
index b70a620..5802d1d 100644
--- a/src/include/access/xlog_internal.h
+++ b/src/include/access/xlog_internal.h
@@ -17,7 +17,6 @@
 #define XLOG_INTERNAL_H
 
 #include "access/xlog.h"
-#include "fmgr.h"
 #include "pgtime.h"
 #include "storage/block.h"
 #include "storage/relfilenode.h"
@@ -253,26 +252,4 @@ extern bool XLogArchiveCheckDone(const char *xlog);
 extern bool XLogArchiveIsBusy(const char *xlog);
 extern void XLogArchiveCleanup(const char *xlog);
 
-/*
- * These aren't in xlog.h because I'd rather not include fmgr.h there.
- */
-extern Datum pg_start_backup(PG_FUNCTION_ARGS);
-extern Datum pg_stop_backup(PG_FUNCTION_ARGS);
-extern Datum pg_switch_xlog(PG_FUNCTION_ARGS);
-extern Datum pg_create_restore_point(PG_FUNCTION_ARGS);
-extern Datum pg_current_xlog_location(PG_FUNCTION_ARGS);
-extern Datum pg_current_xlog_insert_location(PG_FUNCTION_ARGS);
-extern Datum pg_last_xlog_receive_location(PG_FUNCTION_ARGS);
-extern Datum pg_last_xlog_replay_location(PG_FUNCTION_ARGS);
-extern Datum pg_last_xact_replay_timestamp(PG_FUNCTION_ARGS);
-extern Datum pg_xlogfile_name_offset(PG_FUNCTION_ARGS);
-extern Datum pg_xlogfile_name(PG_FUNCTION_ARGS);
-extern Datum pg_is_in_recovery(PG_FUNCTION_ARGS);
-extern Datum pg_xlog_replay_pause(PG_FUNCTION_ARGS);
-extern Datum pg_xlog_replay_resume(PG_FUNCTION_ARGS);
-extern Datum pg_is_xlog_replay_paused(PG_FUNCTION_ARGS);
-extern Datum pg_xlog_location_diff(PG_FUNCTION_ARGS);
-extern Datum pg_is_in_backup(PG_FUNCTION_ARGS);
-extern Datum pg_backup_start_time(PG_FUNCTION_ARGS);
-
 #endif   /* XLOG_INTERNAL_H */