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flightgear/CMakeModules/FindOpenAL.cmake

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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindOpenAL
----------
Finds Open Audio Library (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.
#]=======================================================================]
# Modifed for FlightGear by James Turner
# We want to use the 'parented' directories here, unlike the standard CMake version
# of this.
if (OPENAL_LIBRARY AND OPENAL_INCLUDE_DIR)
# already set, do nothing
else()
find_path(OPENAL_INCLUDE_DIR OpenAL/al.h AL/al.h
HINTS
ENV OPENALDIR
PATH_SUFFIXES include
PATHS
/opt
)
find_library(OPENAL_LIBRARY
NAMES OpenAL al openal OpenAL32
HINTS
ENV OPENALDIR
PATH_SUFFIXES libx32 lib64 lib libs64 libs
PATHS
/opt
)
find_package_handle_standard_args(OpenAL DEFAULT_MSG OPENAL_LIBRARY OPENAL_INCLUDE_DIR)
mark_as_advanced(OPENAL_LIBRARY OPENAL_INCLUDE_DIR)
endif()