mingw-w64 should supply GL headers from [1].
Specifically - GL/glext.h

I've used these, they work and don't conflict.

[1] http://www.opengl.org/registry/

Imported headers glext.h, wglext.h, glxext.h, and glcorearb.h headers.
Thanks to LRN for his patch.



git-svn-id: svn://svn.code.sf.net/p/mingw-w64/code/trunk@5925 4407c894-4637-0410-b4f5-ada5f102cad1