This patch spawns from this game engine issue:

[#7113] GE crash pressing as soon as P on 64 bit


Note:         glext.h has been removed from the source
        If you get errors compiling with it you have 2 options
                download/install 	glext.h        (preferred method)
                or set WITH_BF_GLEXT=false
        If your a user and having problems with game engine try
                setting the env var: WITHOUT_GLEXT 1

Kent

source/gameengine/BlenderRoutines/SConscript

@@ -25,4 +25,7 @@ cxxflags = []
 if env['OURPLATFORM']=='win32-vc':
 	cxxflags.append ('/GR')
 
+if env['WITH_BF_GLEXT'] == 1:
+	env['CPPFLAGS'].append('-DWITH_GLEXT')
+
 env.BlenderLib ( 'bf_bloutines', sources, Split(incs), [], libtype=['game', 'game2', 'player'], priority=[0, 0, 55] , compileflags=cxxflags)