CMake/Modules/FindOpenAL.cmake

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# 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.
#
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# Created by Eric Wing. This was influenced by the FindSDL.cmake module.
# On OSX, this will prefer the Framework version (if found) over others.
# People will have to manually change the cache values of
# OPENAL_LIBRARY to override this selection.
# Tiger will include OpenAL as part of the System.
# But for now, we have to look around.
# Other (Unix) systems should be able to utilize the non-framework paths.
FIND_PATH(OPENAL_INCLUDE_DIR al.h
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$ENV{OPENALDIR}/include
~/Library/Frameworks/OpenAL.framework/Headers
/Library/Frameworks/OpenAL.framework/Headers
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/System/Library/Frameworks/OpenAL.framework/Headers # Tiger
/usr/local/include/AL
/usr/local/include/OpenAL
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/usr/local/include
/usr/include/AL
/usr/include/OpenAL
/usr/include
/sw/include/AL # Fink
/sw/include/OpenAL
/sw/include
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/opt/local/include/AL # DarwinPorts
/opt/local/include/OpenAL
/opt/local/include
/opt/csw/include/AL # Blastwave
/opt/csw/include/OpenAL
/opt/csw/include
/opt/include/AL
/opt/include/OpenAL
/opt/include
)
# I'm not sure if I should do a special casing for Apple. It is
# unlikely that other Unix systems will find the framework path.
# But if they do ([Next|Open|GNU]Step?),
# do they want the -framework option also?
IF(${OPENAL_INCLUDE_DIR} MATCHES ".framework")
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STRING(REGEX REPLACE "(.*)/.*\\.framework/.*" "\\1" OPENAL_FRAMEWORK_PATH_TMP ${OPENAL_INCLUDE_DIR})
IF("${OPENAL_FRAMEWORK_PATH_TMP}" STREQUAL "/Library/Frameworks"
OR "${OPENAL_FRAMEWORK_PATH_TMP}" STREQUAL "/System/Library/Frameworks"
)
# String is in default search path, don't need to use -F
SET (OPENAL_LIBRARY "-framework OpenAL" CACHE STRING "OpenAL framework for OSX")
ELSE("${OPENAL_FRAMEWORK_PATH_TMP}" STREQUAL "/Library/Frameworks"
OR "${OPENAL_FRAMEWORK_PATH_TMP}" STREQUAL "/System/Library/Frameworks"
)
# String is not /Library/Frameworks, need to use -F
SET(OPENAL_LIBRARY "-F${OPENAL_FRAMEWORK_PATH_TMP} -framework OpenAL" CACHE STRING "OpenAL framework for OSX")
ENDIF("${OPENAL_FRAMEWORK_PATH_TMP}" STREQUAL "/Library/Frameworks"
OR "${OPENAL_FRAMEWORK_PATH_TMP}" STREQUAL "/System/Library/Frameworks"
)
# Clear the temp variable so nobody can see it
SET(OPENAL_FRAMEWORK_PATH_TMP "" CACHE INTERNAL "")
ELSE(${OPENAL_INCLUDE_DIR} MATCHES ".framework")
FIND_LIBRARY(OPENAL_LIBRARY
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NAMES openal al OpenAL32
PATHS
$ENV{OPENALDIR}/lib
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$ENV{OPENALDIR}/libs
/usr/local/lib
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/usr/lib
/sw/lib
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/opt/local/lib
/opt/csw/lib
/opt/lib
)
ENDIF(${OPENAL_INCLUDE_DIR} MATCHES ".framework")
SET(OPENAL_FOUND "NO")
IF(OPENAL_LIBRARY)
SET(OPENAL_FOUND "YES")
ENDIF(OPENAL_LIBRARY)