* Russell Shaw <rjshaw at netspace.net.au> [2006-07-09 09:57]: >When building Xorg-server 7.1, "make" fails if GL/gl.h is missing, >because configure doesn't look for it. On debian, it is provided >by mesa-common-dev. This is mentioned on http://wiki.x.org/wiki/ModularDevelopersGuide. X depends on Mesa sources to build with GLX.