mpv-player/mpv — pull request #264 by Nyx0uf (2013-09-28 11:31:17+00:00)
Title: Fix build on OS X 10.9

Since commit (https://github.com/mpv-player/mpv/commit/0ab9634eb3f3005c37a0346d9035dbc4d4abd144) build fails on 10.9 with error:
'implicit declaration of function glClearColor() and glClear()'

Adding import of OpenGL/gl.h fix the problem.