No GLEW on OSX necessary (untested)

other/glew.lua

@@ -36,7 +36,7 @@ Glew = {
 				
 				settings.link.libs:Add("glew32")
 			elseif option.use_macosxframwork > 0 then
-				--todo
+				-- no glew
 			else
 				settings.link.libs:Add("GLEW")
 			end

src/engine/client/backend_sdl.cpp

@@ -6,7 +6,12 @@
 	#define WINVER 0x0501
 #endif
 
+#if defined(CONF_PLATFORM_MACOSX)
+#include <OpenGL/gl3.h>
+#else
 #include "GL/glew.h"
+#endif
+
 #include <base/detect.h>
 #include <base/math.h>
 #include <stdlib.h>
@@ -1676,10 +1681,12 @@ int CGraphicsBackend_SDL_OpenGL::Init(const char *pName, int *Screen, int *pWidt
 		return -1;
 	}
 
+#if defined(CONF_PLATFORM_MACOSX)
 	//support graphic cards that are pretty old(and linux)
 	glewExperimental = GL_TRUE;
 	if (GLEW_OK != glewInit())
 		return -1;
+#endif
 
 	SDL_GL_GetDrawableSize(m_pWindow, pWidth, pHeight);
 	SDL_GL_SetSwapInterval(Flags&IGraphicsBackend::INITFLAG_VSYNC ? 1 : 0);

src/engine/client/opengl_sl.h

@@ -1,6 +1,10 @@
 #pragma once
 
+#if defined(CONF_PLATFORM_MACOSX)
+#include <OpenGL/gl3.h>
+#else
 #include "GL/glew.h"
+#endif
 
 class CGLSL {
 public:

src/engine/client/opengl_sl_program.h

@@ -1,6 +1,10 @@
 #pragma once
 
+#if defined(CONF_PLATFORM_MACOSX)
+#include <OpenGL/gl3.h>
+#else
 #include "GL/glew.h"
+#endif
 
 class CGLSL;