$NetBSD: patch-aa,v 1.4 2008/06/02 16:42:21 drochner Exp $

--- config.h.in.orig	2008-05-31 14:33:00.000000000 +0200
+++ config.h.in
@@ -80,3 +80,15 @@
 
 /* Define to 1 if the X Window System is missing or not being used. */
 #undef X_DISPLAY_MISSING
+
+/*
+ * If NULL is just "0", and is used to terminate the argument list
+ * of functions with the gcc "sentinel" attribute, gcc4 emits
+ * a warning. Temporarily work around the issue until all supported
+ * platforms have the correct definition.
+ */
+#ifdef __DragonFly__ /* releases prior to 2.0 */
+#define VPNULL (void *)NULL
+#else
+#define VPNULL NULL
+#endif