Running ccl 1.9-r15968M under linux mint 14, I assume that the easiest way to get cl-opengl is via quicklisp.
On its release pages I see three projectswhich mention cl-opengl in some way: cl-glfw-20130615git <- lots of stuff cl-glfw3 cl-opengl-20131003git <- the core pieces, I believe.
Should I install them all, I wonder ?
Cheers /Greg Bennett