--- gdk/gdkglglext.h.orig	2009-08-24 14:47:39.000000000 +0400
+++ gdk/gdkglglext.h	2009-08-24 14:48:31.000000000 +0400
@@ -30,7 +30,11 @@
 #include <windows.h>
 #endif
 
+#ifdef GDK_WINDOWING_QUARTZ
+#include <OpenGL/gl.h>
+#else
 #include <GL/gl.h>
+#endif
 
 #include <gdk/gdkgldefs.h>
 #include <gdk/gdkglquery.h>