$NetBSD: patch-ab,v 1.1.1.1 2008/05/25 15:29:19 joerg Exp $

--- configure.in.orig	2008-05-16 18:07:02.000000000 +0200
+++ configure.in
@@ -685,7 +685,7 @@ case $uname in
 
 	dnl Check for the Xshm extension unless disabled...
         AC_ARG_ENABLE(xshm, [  --enable-xshm           turn on MIT-SHM support (default=no)])
-	if test x$enable_xshm == xyes; then
+	if test x$enable_xshm = xyes; then
 	  AC_CHECK_HEADER(X11/extensions/XShm.h, AC_DEFINE(USE_XSHM),,
 	    [#include <X11/Xlib.h>])
 	fi