FindOpenGL

Try to find OpenGL

Once done this will define

OPENGL_FOUND        - system has OpenGL
OPENGL_XMESA_FOUND  - system has XMESA
OPENGL_GLU_FOUND    - system has GLU
OPENGL_INCLUDE_DIR  - the GL include directory
OPENGL_LIBRARIES    - Link these to use OpenGL and GLU

If you want to use just GL you can use these values

OPENGL_gl_LIBRARY   - Path to OpenGL Library
OPENGL_glu_LIBRARY  - Path to GLU Library

On OSX default to using the framework version of opengl People will have to change the cache values of OPENGL_glu_LIBRARY and OPENGL_gl_LIBRARY to use OpenGL with X11 on OSX