Source
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--- gdk/gdkglglext.h.orig 2009-08-24 14:47:39.000000000 +0400
+++ gdk/gdkglglext.h 2009-08-24 14:48:31.000000000 +0400
#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>