Dear list,

I want to compile Gem from github on Mac OS X but already at confuger I got the error:

configure: error: GL (headers) not found! you need openGL!!

however
glxinfo says:

glxinfo | grep "OpenGL version"

OpenGL version string: 2.1 ATI-1.51.8

How can I compile with success? Any hints?

Best,
Popesz