$OpenBSD: patch-include_SDL_opengl_h,v 1.1 2010/06/15 15:29:29 espie Exp $
--- include/SDL_opengl.h.orig	Thu May 13 13:54:28 2010
+++ include/SDL_opengl.h	Thu May 13 13:56:19 2010
@@ -33,7 +33,11 @@
 #endif
 #ifndef NO_SDL_GLEXT
 #define __glext_h_  /* Don't let gl.h include glext.h */
+#ifndef GL_ARB_shader_objects
+#define GL_ARB_shader_objects 0
+#define undef_GL_ARB
 #endif
+#endif
 #if defined(__MACOSX__)
 #include <OpenGL/gl.h>	/* Header File For The OpenGL Library */
 #include <OpenGL/glu.h>	/* Header File For The GLU Library */
@@ -46,6 +50,10 @@
 #endif
 #ifndef NO_SDL_GLEXT
 #undef __glext_h_
+#ifdef undef_GL_ARB
+#undef GL_ARB_shader_objects
+#undef undef_GL_ARB
+#endif
 #endif
 
 /* This file taken from "GLext.h" from the Jeff Molofee OpenGL tutorials.