--- a/config.lib	Mon May 05 16:05:36 2008 +0000
+++ b/config.lib	Mon May 05 18:27:57 2008 +0000
@@ -934,7 +934,7 @@
 		fi
 
 		if [ $cc_version -ge 30 ]; then
-			CFLAGS="$CFLAGS -W -Wno-unused-parameter"
+			CFLAGS="$CFLAGS -W -Wno-unused-parameter -Wformat=2"
 		fi
 
 		if [ $cc_version -ge 34 ]; then