Make numeric form of PG version number readily available in Makefiles.

tglsfdc · tglsfdc · commit 544e7581427a · 2015-07-05T12:01:01.000-04:00
Expose PG_VERSION_NUM (e.g., "90600") as a Make variable; but for consistency with the other Make variables holding similar info, call the variable just VERSION_NUM not PG_VERSION_NUM. There was some discussion of making this value available as a pg_config value as well. However, that would entail substantially more work than this two-line patch. Given that there was not exactly universal consensus that we need this at all, let's just do a minimal amount of work for now. Back-patch of commit a5d489c, so that this variable is actually useful for its intended purpose sometime before 2020. Michael Paquier, reviewed by Pavel Stehule
diff --git a/configure b/configure
@@ -642,6 +642,7 @@ ac_includes_default="\
 
 ac_subst_vars='LTLIBOBJS
 vpath_build
+PG_VERSION_NUM
 OSX
 XSLTPROC
 COLLATEINDEX
@@ -30617,6 +30618,7 @@ _ACEOF
 
 
 
+
 # Begin output steps
 
 { $as_echo "$as_me:$LINENO: using compiler=$cc_string" >&5
diff --git a/configure.in b/configure.in
@@ -1967,6 +1967,7 @@ AC_DEFINE_UNQUOTED(PG_VERSION_STR,
 tr '.' '	' |
 $AWK '{printf "%d%02d%02d", $1, $2, (NF >= 3) ? $3 : 0}'`"]
 AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
+AC_SUBST(PG_VERSION_NUM)
 
 
 # Begin output steps
diff --git a/src/Makefile.global.in b/src/Makefile.global.in
@@ -37,6 +37,7 @@ all:
 # PostgreSQL version number
 VERSION = @PACKAGE_VERSION@
 MAJORVERSION = @PG_MAJORVERSION@
+VERSION_NUM = @PG_VERSION_NUM@
 
 # Support for VPATH builds
 vpath_build = @vpath_build@
