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413 lines
13 KiB
413 lines
13 KiB
16 years ago
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# Locates the SDL_sound library
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# This module depends on SDL being found and
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# must be called AFTER FindSDL.cmake is called.
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# This module defines
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# SDL_SOUND_INCLUDE_DIR, where to find SDL_sound.h
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# SDL_SOUND_FOUND, if false, do not try to link to SDL
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# SDL_SOUND_LIBRARIES, this contains the list of libraries that you need
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# to link against. This is a read-only variable and is marked INTERNAL.
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# SDL_SOUND_EXTRAS, this is an optional variable for you to add your own
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# flags to SDL_SOUND_LIBRARIES. This is prepended to SDL_SOUND_LIBRARIES.
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# This is available mostly for cases this module failed to anticipate for
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# and you must add additional flags. This is marked as ADVANCED.
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#
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# This module also defines (but you shouldn't need to use directly)
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# SDL_SOUND_LIBRARY, the name of just the SDL_sound library you would link
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# against. Use SDL_SOUND_LIBRARIES for you link instructions and not this one.
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# And might define the following as needed
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# MIKMOD_LIBRARY
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# MODPLUG_LIBRARY
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# OGG_LIBRARY
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# VORBIS_LIBRARY
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# SMPEG_LIBRARY
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# FLAC_LIBRARY
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# SPEEX_LIBRARY
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#
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# Typically, you should not use these variables directly, and you should use
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# SDL_SOUND_LIBRARIES which contains SDL_SOUND_LIBRARY and the other audio libraries
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# (if needed) to successfully compile on your system .
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#
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# Created by Eric Wing.
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# This module is a bit more complicated than the other FindSDL* family modules.
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# The reason is that SDL_sound can be compiled in a large variety of different ways
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# which are independent of platform. SDL_sound may dynamically link against other 3rd
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# party libraries to get additional codec support, such as Ogg Vorbis, SMPEG, ModPlug,
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# MikMod, FLAC, Speex, and potentially others.
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# Under some circumstances which I don't fully understand,
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# there seems to be a requirement
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# that dependent libraries of libraries you use must also be explicitly
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# linked against in order to successfully compile. SDL_sound does not currently
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# have any system in place to know how it was compiled.
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# So this CMake module does the hard work in trying to discover which 3rd party
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# libraries are required for building (if any).
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# This module uses a brute force approach to create a test program that uses SDL_sound,
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# and then tries to build it. If the build fails, it parses the error output for
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# known symbol names to figure out which libraries are needed.
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#
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# Responds to the $SDLDIR and $SDLSOUNDDIR environmental variable that would
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# correspond to the ./configure --prefix=$SDLDIR used in building SDL.
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#
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# On OSX, this will prefer the Framework version (if found) over others.
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# People will have to manually change the cache values of
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# SDL_LIBRARY to override this selectionor set the CMake environment
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# CMAKE_INCLUDE_PATH to modify the search paths.
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#
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SET(SDL_SOUND_EXTRAS "" CACHE STRING "SDL_sound extra flags")
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MARK_AS_ADVANCED(SDL_SOUND_EXTRAS)
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# Find SDL_sound.h
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FIND_PATH(SDL_SOUND_INCLUDE_DIR SDL_sound.h
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$ENV{SDLSOUNDDIR}/include
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/include
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$ENV{SDLDIR}
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NO_DEFAULT_PATH
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)
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FIND_PATH(SDL_SOUND_INCLUDE_DIR SDL_sound.h
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NO_DEFAULT_PATH
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)
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FIND_PATH(SDL_SOUND_INCLUDE_DIR SDL_sound.h
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/usr/local/include/SDL
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/usr/include/SDL
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/usr/local/include/SDL12
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/usr/local/include/SDL11 # FreeBSD ports
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/usr/include/SDL12
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/usr/include/SDL11
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/usr/local/include
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/usr/include
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/sw/include/SDL # Fink
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/sw/include
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/opt/local/include/SDL # DarwinPorts
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/opt/local/include
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/opt/csw/include/SDL # Blastwave
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/opt/csw/include
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/opt/include/SDL
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/opt/include
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)
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FIND_LIBRARY(SDL_SOUND_LIBRARY
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NAMES SDL_sound
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PATHS
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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SET(SDL_SOUND_FOUND "NO")
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IF(SDL_FOUND AND SDL_SOUND_INCLUDE_DIR AND SDL_SOUND_LIBRARY)
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# CMake is giving me problems using TRY_COMPILE with the CMAKE_FLAGS
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# for the :STRING syntax if I have multiple values contained in a
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# single variable. This is a problem for the SDL_LIBRARY variable
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# because it does just that. When I feed this variable to the command,
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# only the first value gets the appropriate modifier (e.g. -I) and
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# the rest get dropped.
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# To get multiple single variables to work, I must separate them with a "\;"
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# I could go back and modify the FindSDL.cmake module, but that's kind of painful.
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# The solution would be to try something like:
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# SET(SDL_TRY_COMPILE_LIBRARY_LIST "${SDL_TRY_COMPILE_LIBRARY_LIST}\;${CMAKE_THREAD_LIBS_INIT}")
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# Instead, it was suggested on the mailing list to write a temporary CMakeLists.txt
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# with a temporary test project and invoke that with TRY_COMPILE.
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# See message thread "Figuring out dependencies for a library in order to build"
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# 2005-07-16
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# TRY_COMPILE(
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# MY_RESULT
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# ${CMAKE_BINARY_DIR}
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# ${PROJECT_SOURCE_DIR}/DetermineSoundLibs.c
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# CMAKE_FLAGS
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# -DINCLUDE_DIRECTORIES:STRING=${SDL_INCLUDE_DIR}\;${SDL_SOUND_INCLUDE_DIR}
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# -DLINK_LIBRARIES:STRING=${SDL_SOUND_LIBRARY}\;${SDL_LIBRARY}
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# OUTPUT_VARIABLE MY_OUTPUT
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# )
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# To minimize external dependencies, create a sdlsound test program
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# which will be used to figure out if additional link dependencies are
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# required for the link phase.
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FILE(WRITE ${PROJECT_BINARY_DIR}/CMakeTmp/DetermineSoundLibs.c
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"#include \"SDL_sound.h\"
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#include \"SDL.h\"
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int main(int argc, char* argv[])
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{
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Sound_AudioInfo desired;
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Sound_Sample* sample;
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SDL_Init(0);
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Sound_Init();
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/* This doesn't actually have to work, but Init() is a no-op
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* for some of the decoders, so this should force more symbols
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* to be pulled in.
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*/
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sample = Sound_NewSampleFromFile(argv[1], &desired, 4096);
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Sound_Quit();
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SDL_Quit();
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return 0;
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}"
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)
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# Calling
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# TARGET_LINK_LIBRARIES(DetermineSoundLibs "${SDL_SOUND_LIBRARY} ${SDL_LIBRARY})
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# causes problems when SDL_LIBRARY looks like
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# /Library/Frameworks/SDL.framework;-framework Cocoa
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# The ;-framework Cocoa seems to be confusing CMake once the OS X
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# framework support was added. I was told that breaking up the list
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# would fix the problem.
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SET(TMP_TRY_LIBS)
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FOREACH(lib ${SDL_SOUND_LIBRARY} ${SDL_LIBRARY})
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SET(TMP_TRY_LIBS "${TMP_TRY_LIBS} \"${lib}\"")
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ENDFOREACH(lib)
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# MESSAGE("TMP_TRY_LIBS ${TMP_TRY_LIBS}")
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# Write the CMakeLists.txt and test project
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# Weird, this is still sketchy. If I don't quote the variables
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# in the TARGET_LINK_LIBRARIES, I seem to loose everything
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# in the SDL_LIBRARY string after the "-framework".
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# But if I quote the stuff in INCLUDE_DIRECTORIES, it doesn't work.
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FILE(WRITE ${PROJECT_BINARY_DIR}/CMakeTmp/CMakeLists.txt
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"PROJECT(DetermineSoundLibs)
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INCLUDE_DIRECTORIES(${SDL_INCLUDE_DIR} ${SDL_SOUND_INCLUDE_DIR})
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ADD_EXECUTABLE(DetermineSoundLibs DetermineSoundLibs.c)
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TARGET_LINK_LIBRARIES(DetermineSoundLibs ${TMP_TRY_LIBS})"
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)
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TRY_COMPILE(
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MY_RESULT
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${PROJECT_BINARY_DIR}/CMakeTmp
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${PROJECT_BINARY_DIR}/CMakeTmp
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DetermineSoundLibs
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OUTPUT_VARIABLE MY_OUTPUT
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)
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# MESSAGE("${MY_RESULT}")
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# MESSAGE(${MY_OUTPUT})
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IF(NOT MY_RESULT)
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# I expect that MPGLIB, VOC, WAV, AIFF, and SHN are compiled in statically.
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# I think Timidity is also compiled in statically.
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# I've never had to explcitly link against Quicktime, so I'll skip that for now.
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARY})
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# Find MikMod
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IF("${MY_OUTPUT}" MATCHES "MikMod_")
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FIND_LIBRARY(MIKMOD_LIBRARY
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NAMES libmikmod-coreaudio mikmod
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PATHS
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$ENV{MIKMODDIR}/lib
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$ENV{MIKMODDIR}
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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IF(MIKMOD_LIBRARY)
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${MIKMOD_LIBRARY})
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ENDIF(MIKMOD_LIBRARY)
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ENDIF("${MY_OUTPUT}" MATCHES "MikMod_")
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# Find ModPlug
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IF("${MY_OUTPUT}" MATCHES "MODPLUG_")
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FIND_LIBRARY(MODPLUG_LIBRARY
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NAMES modplug
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PATHS
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$ENV{MODPLUGDIR}/lib
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$ENV{MODPLUGDIR}
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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IF(MODPLUG_LIBRARY)
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${MODPLUG_LIBRARY})
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ENDIF(MODPLUG_LIBRARY)
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ENDIF("${MY_OUTPUT}" MATCHES "MODPLUG_")
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# Find Ogg and Vorbis
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IF("${MY_OUTPUT}" MATCHES "ov_")
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FIND_LIBRARY(VORBIS_LIBRARY
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NAMES vorbis Vorbis VORBIS
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PATHS
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$ENV{VORBISDIR}/lib
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$ENV{VORBISDIR}
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$ENV{OGGDIR}/lib
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$ENV{OGGDIR}
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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IF(VORBIS_LIBRARY)
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${VORBIS_LIBRARY})
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ENDIF(VORBIS_LIBRARY)
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FIND_LIBRARY(OGG_LIBRARY
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NAMES ogg Ogg OGG
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PATHS
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$ENV{OGGDIR}/lib
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$ENV{OGGDIR}
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$ENV{VORBISDIR}/lib
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$ENV{VORBISDIR}
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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IF(OGG_LIBRARY)
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${OGG_LIBRARY})
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ENDIF(OGG_LIBRARY)
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ENDIF("${MY_OUTPUT}" MATCHES "ov_")
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# Find SMPEG
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IF("${MY_OUTPUT}" MATCHES "SMPEG_")
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FIND_LIBRARY(SMPEG_LIBRARY
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NAMES smpeg SMPEG Smpeg SMpeg
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PATHS
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$ENV{SMPEGDIR}/lib
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$ENV{SMPEGDIR}
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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IF(SMPEG_LIBRARY)
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${SMPEG_LIBRARY})
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ENDIF(SMPEG_LIBRARY)
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ENDIF("${MY_OUTPUT}" MATCHES "SMPEG_")
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# Find FLAC
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IF("${MY_OUTPUT}" MATCHES "FLAC_")
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FIND_LIBRARY(FLAC_LIBRARY
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NAMES flac FLAC
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PATHS
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$ENV{FLACDIR}/lib
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$ENV{FLACDIR}
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$ENV{SDLSOUNDDIR}/lib
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$ENV{SDLSOUNDDIR}
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$ENV{SDLDIR}/lib
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$ENV{SDLDIR}
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/usr/local/lib
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/usr/lib
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/sw/lib
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/opt/local/lib
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/opt/csw/lib
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/opt/lib
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)
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IF(FLAC_LIBRARY)
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SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${FLAC_LIBRARY})
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ENDIF(FLAC_LIBRARY)
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ENDIF("${MY_OUTPUT}" MATCHES "FLAC_")
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# Hmmm...Speex seems to depend on Ogg. This might be a problem if
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# the TRY_COMPILE attempt gets blocked at SPEEX before it can pull
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# in the Ogg symbols. I'm not sure if I should duplicate the ogg stuff
|
||
|
|
# above for here or if two ogg entries will screw up things.
|
||
|
|
IF("${MY_OUTPUT}" MATCHES "speex_")
|
||
|
|
FIND_LIBRARY(SPEEX_LIBRARY
|
||
|
|
NAMES speex SPEEX
|
||
|
|
PATHS
|
||
|
|
$ENV{SPEEXDIR}/lib
|
||
|
|
$ENV{SPEEXDIR}
|
||
|
|
$ENV{SDLSOUNDDIR}/lib
|
||
|
|
$ENV{SDLSOUNDDIR}
|
||
|
|
$ENV{SDLDIR}/lib
|
||
|
|
$ENV{SDLDIR}
|
||
|
|
/usr/local/lib
|
||
|
|
/usr/lib
|
||
|
|
/sw/lib
|
||
|
|
/opt/local/lib
|
||
|
|
/opt/csw/lib
|
||
|
|
/opt/lib
|
||
|
|
)
|
||
|
|
IF(SPEEX_LIBRARY)
|
||
|
|
SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${SPEEX_LIBRARY})
|
||
|
|
ENDIF(SPEEX_LIBRARY)
|
||
|
|
|
||
|
|
# Find OGG (needed for Speex)
|
||
|
|
# We might have already found Ogg for Vorbis, so skip it if so.
|
||
|
|
IF(NOT OGG_LIBRARY)
|
||
|
|
FIND_LIBRARY(OGG_LIBRARY
|
||
|
|
NAMES ogg Ogg OGG
|
||
|
|
PATHS
|
||
|
|
$ENV{OGGDIR}/lib
|
||
|
|
$ENV{OGGDIR}
|
||
|
|
$ENV{VORBISDIR}/lib
|
||
|
|
$ENV{VORBISDIR}
|
||
|
|
$ENV{SPEEXDIR}/lib
|
||
|
|
$ENV{SPEEXDIR}
|
||
|
|
$ENV{SDLSOUNDDIR}/lib
|
||
|
|
$ENV{SDLSOUNDDIR}
|
||
|
|
$ENV{SDLDIR}/lib
|
||
|
|
$ENV{SDLDIR}
|
||
|
|
/usr/local/lib
|
||
|
|
/usr/lib
|
||
|
|
/sw/lib
|
||
|
|
/opt/local/lib
|
||
|
|
/opt/csw/lib
|
||
|
|
/opt/lib
|
||
|
|
)
|
||
|
|
IF(OGG_LIBRARY)
|
||
|
|
SET(SDL_SOUND_LIBRARIES_TMP ${SDL_SOUND_LIBRARIES_TMP} ${OGG_LIBRARY})
|
||
|
|
ENDIF(OGG_LIBRARY)
|
||
|
|
ENDIF(NOT OGG_LIBRARY)
|
||
|
|
ENDIF("${MY_OUTPUT}" MATCHES "speex_")
|
||
|
|
|
||
|
|
ELSE(NOT MY_RESULT)
|
||
|
|
SET(SDL_SOUND_LIBRARIES "${SDL_SOUND_EXTRAS} ${SDL_SOUND_LIBRARY}" CACHE INTERNAL "SDL_sound and dependent libraries")
|
||
|
|
ENDIF(NOT MY_RESULT)
|
||
|
|
|
||
|
|
SET(SDL_SOUND_LIBRARIES "${SDL_SOUND_EXTRAS} ${SDL_SOUND_LIBRARIES_TMP}" CACHE INTERNAL "SDL_sound and dependent libraries")
|
||
|
|
SET(SDL_SOUND_FOUND "YES")
|
||
|
|
ENDIF(SDL_FOUND AND SDL_SOUND_INCLUDE_DIR AND SDL_SOUND_LIBRARY)
|
||
|
|
|
||
|
|
# MESSAGE("SDL_SOUND_LIBRARIES is ${SDL_SOUND_LIBRARIES}")
|
||
|
|
|