Source
--- gdk/gdkglquery.c.orig 2009-08-24 14:43:25.000000000 +0400
+++ gdk/gdkglquery.c 2009-08-24 14:44:18.000000000 +0400
#include <windows.h>
#endif
+#ifdef GDK_WINDOWING_QUARTZ
+#include <OpenGL/gl.h>
+#else
#include <GL/gl.h>
+#endif
/*
* This code is based on glutExtensionSupported().