Add PG_VERSION_NUM for use by 3rd party applications wanting to test the

backend version in C using > and < comparisons.

configure

@@ -4742,6 +4742,14 @@ fi
 fi
+# Supply a numeric version string for use by 3rd party add-ons
+PG_VERSION_NUM="`echo "$PACKAGE_VERSION" | sed 's/A-Za-z.*$//' |
+$AWK -F'\.' '{printf \"%d%02d%02d\", $1, $2, (NF >= 3) ? $3 : 0}'`"
+
+cat >>confdefs.h <<_ACEOF
+#define PG_VERSION_NUM $PG_VERSION_NUM
+_ACEOF
+
 ##
 ## Libraries

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.450 2006/02/21 06:06:50 tgl Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.451 2006/02/28 16:41:21 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -26,7 +26,7 @@ AC_CONFIG_AUX_DIR(config)
 AC_PREFIX_DEFAULT(/usr/local/pgsql)
 AC_SUBST(configure_args, [$ac_configure_args])
 
-AC_DEFINE_UNQUOTED(PG_VERSION, "$PACKAGE_VERSION", [PostgreSQL version])
+AC_DEFINE_UNQUOTED(PG_VERSION, "$PACKAGE_VERSION", [PostgreSQL version as a string])
 
 AC_CANONICAL_HOST
 
@@ -585,6 +585,10 @@ if test "$with_python" = yes; then
   PGAC_CHECK_PYTHON_EMBED_SETUP
 fi
 
+# Supply a numeric version string for use by 3rd party add-ons
+PG_VERSION_NUM="`echo "$PACKAGE_VERSION" | sed 's/[A-Za-z].*$//' |
+$AWK -F'\.' '{printf \"%d%02d%02d\", $1, $2, (NF >= 3) ? $3 : 0}'`"
+AC_DEFINE_UNQUOTED(PG_VERSION_NUM, $PG_VERSION_NUM, [PostgreSQL version as a number])
 
 ##
 ## Libraries

src/include/pg_config.h.in

@@ -547,9 +547,12 @@
    (--with-krb-srvnam=NAME) */
 #undef PG_KRB_SRVNAM
 
-/* PostgreSQL version */
+/* PostgreSQL version as a string */
 #undef PG_VERSION
 
+/* PostgreSQL version as a number */
+#undef PG_VERSION_NUM
+
 /* A string containing the version number, platform, and C compiler */
 #undef PG_VERSION_STR