9af1cee2f7
1) Need to include GL/glext.h on W32 to provide necessary macros 2) W32 macros that pre-processor has by default are different for different toolchains. Borland uses __WIN32__, everyone else has _WIN32, so check both. Side-note: glext.h is not supplied by mingw-w64 at the moment, but can be downloaded from http://www.opengl.org/registry/ https://bugzilla.gnome.org/show_bug.cgi?id=703364