external: define also __gl3_h_ in the OpenGL headers.

Fixes bad interaction with Qt and system GL headers on macOS.
9 years ago · 2384d5cccd
2 changed files with 2 additions and 0 deletions
--- a/src/MagnumExternal/OpenGL/GL/flextGL.h
+++ b/src/MagnumExternal/OpenGL/GL/flextGL.h
@ -27,6 +27,7 @@
 #define __GLEW_H__
 #define __gl_h_
 #define __GL_H__
+#define __gl3_h_
 #define __glext_h_
 #define __GLEXT_H_
 #define __gltypes_h_
--- a/src/MagnumExternal/OpenGL/GL/flextGL.h.template
+++ b/src/MagnumExternal/OpenGL/GL/flextGL.h.template
@ -28,6 +28,7 @@
 #define __GLEW_H__
 #define __gl_h_
 #define __GL_H__
+#define __gl3_h_
 #define __glext_h_
 #define __GLEXT_H_
 #define __gltypes_h_