--- postgresql-8.2.3/src/template/linux	2006-03-10 22:38:41.000000000 -0600
+++ new-postgresql-8.2.3/src/template/linux	2007-04-09 12:15:36.223301500 -0500
@@ -1,4 +1,4 @@
 # $PostgreSQL: pgsql/src/template/linux,v 1.28 2006/03/11 04:38:41 momjian Exp $
 
 # Force _GNU_SOURCE on; plperl is broken with Perl 5.8.0 otherwise
-CPPFLAGS="-D_GNU_SOURCE"
+CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"