glew installed and out/glew.ooc are all you need to use this. Generated against glew 1.5.1. GLEWby home is http://onesadcookie.com/svn/GLEWby glew home is http://glew.sourceforge.net/ If you want to remake it for whatever reason, you'll need glew and ruby installed, then: ruby glewby.rb --glew-header <path/to/GL/glew.h> --template-directory in --output-directory out