Error if OpenAL isn't found on OSX, and don't set the lib if it's not found
treeacffdff9c41f4be5e71fe45b182143df0b135e11
-rw-r--r-- 28 .gitignore
-rw-r--r-- 11533 CMakeLists.txt
-rw-r--r-- 25269 COPYING
-rw-r--r-- 933 XCompile.txt
-rw-r--r-- 285 alure.pc.in
drwxr-xr-x - build
-rw-r--r-- 612 config.h.in
drwxr-xr-x - docs
drwxr-xr-x - examples
drwxr-xr-x - include
drwxr-xr-x - src