$NetBSD: patch-ac,v 1.1 2004/09/24 00:58:30 kim Exp $

--- wml_backend/p4_gm4/configure.in.orig	2002-06-23 17:02:15.000000000 -0400
+++ wml_backend/p4_gm4/configure.in	2004-09-23 19:58:12.000000000 -0400
@@ -2,7 +2,7 @@
 # Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
 # Process this file with autoconf to produce a configure script.
 
-undefine([changeword])
+ifdef([changeword],[undefine([changeword])])
 
 AC_INIT(src/m4.c)
 AC_CONFIG_HEADER(config.h)