From 73804d00abc7b6856243196b34f59774c9fe4828 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Wed, 1 Dec 2010 12:02:52 -0800
Subject: [PATCH] Don't conflict with glext.h if it's already been included

---
 include/SDL_opengl.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/SDL_opengl.h b/include/SDL_opengl.h
index 081962d44..b7589468b 100644
--- a/include/SDL_opengl.h
+++ b/include/SDL_opengl.h
@@ -38,6 +38,10 @@
 #endif
 #include <windows.h>
 #endif
+#ifdef __glext_h_
+/* Someone has already included glext.h */
+#define NO_SDL_GLEXT
+#endif
 #ifndef NO_SDL_GLEXT
 #define __glext_h_              /* Don't let gl.h include glext.h */
 #endif