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BFREE / OpenGL-0.55 / glu_util.h 
#ifdef __APPLE__
#include <OpenGL/glu.h>
#else
#include <GL/glu.h>
#endif

#ifndef GLU_VERSION_1_0
#define GLU_VERSION_1_0 1
#endif

#ifdef GLU_VERSION_1_0
#ifndef GLU_VERSION_1_1
typedef GLUnurbs	GLUnurbsObj;
typedef GLUtriangulatorObj	GLUtriangulatorObj;
typedef GLUquadricObj	GLUquadricObjObj;
#endif
#endif