Justin Kim 2faa08ff28 openal: Fix AL header path for Mac OS X
OpenAL.framework doesn't provide 'alext.h'.
Thus, openal is enabled only if the dependency
is set by pkg-config.

fixes: #852
2018-12-25 00:42:31 +09:00
..
2013-05-13 23:48:01 +01:00