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

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 a5d489ccb7e613c7ca3be6141092b8c1d2c13fa7, 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
index 273f8d0db05885e94385b688f8cadb2f7ae08a5d..c3a4b6f919d3c98cf6899dc6330845ab27626900 100755 (executable)
--- a/configure
+++ b/configure
@@ -642,6 +642,7 @@ ac_includes_default="\
 
 ac_subst_vars='LTLIBOBJS
 vpath_build
+PG_VERSION_NUM
 OSX
 XSLTPROC
 COLLATEINDEX
@@ -29407,6 +29408,7 @@ _ACEOF
 
 
 
+
 # prepare build tree if outside source tree
 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
 # Note 2: /bin/pwd might be better than shell's built-in at getting

diff --git a/configure.in b/configure.in
index 3a09775aef8bd2b0a45e66a65647c5cc10dd638c..c083299947b57fc70d9165263fb92450bbb931fb 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1869,6 +1869,7 @@ 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)
 
 
 # prepare build tree if outside source tree

diff --git a/src/Makefile.global.in b/src/Makefile.global.in
index 6fe87f33c3562c4ad04099887d0d580b0277754a..805acf552d6f7889564202cee3fe27af408ca39b 100644 (file)
--- a/src/Makefile.global.in
+++ b/src/Makefile.global.in
@@ -30,6 +30,7 @@ all:
 # PostgreSQL version number
 VERSION = @PACKAGE_VERSION@
 MAJORVERSION = @PG_MAJORVERSION@
+VERSION_NUM = @PG_VERSION_NUM@
 
 # Support for VPATH builds
 vpath_build = @vpath_build@