kripken/emscripten — pull request #2951 by nguillemot (2014-10-30 23:57:48+00:00)
Title: added FindOpenGL & updated OPENAL_FOUND interface

Since emscripten hides the system cmake FindOpenGL.cmake file, I was getting an error when trying to find_package(OpenGL REQUIRED). By creating this stub (in the same style as FindOpenAL.cmake), I no longer had to treat Emscripten as a special case in my build script that uses OpenGL.