--- foobillard-3.0a/src/bumpref.c.orig	2013-09-08 15:40:08.662309957 +0200
+++ foobillard-3.0a/src/bumpref.c	2013-09-08 15:39:42.883548953 +0200
@@ -32,6 +32,8 @@
 #include "vmath.h"
 
 
+#define NO_NV_BUMPREF  /* force not to use bumpref */
+
 #ifndef NO_NV_BUMPREF  /* force not to use bumpref */
 
 #ifdef GL_NV_register_combiners