FindOpenAL
Locate OpenAL This module defines OPENAL_LIBRARY OPENAL_FOUND, if false, do not try to link to OpenAL OPENAL_INCLUDE_DIR, where to find the headers
$OPENALDIR is an environment variable that would correspond to the ./configure –prefix=$OPENALDIR used in building OpenAL.
Created by Eric Wing. This was influenced by the FindSDL.cmake module.
© 2000–2019 Kitware, Inc. and Contributors
Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.5/module/FindOpenAL.html