import ctypes
try:
    from ctypes.util import find_library
except ImportError as err:
    from ctypes.util import findLib 
    def find_library( string ):
        return findLib( string )[0]

GL = OpenGL = ctypes.CDLL( find_library('GL'), mode=ctypes.RTLD_GLOBAL )
GLU = ctypes.CDLL( find_library('GLU'), mode=ctypes.RTLD_GLOBAL )
# glut shouldn't need to be global IIUC
GLUT = ctypes.CDLL( find_library('glut'), mode=ctypes.RTLD_GLOBAL )
print('GL', GL)
print('GLU', GLU)
print('GLUT', GLUT)
print(GLUT.glutSolidTeapot)