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# -*- cmake -*-
include(Linking)
include(Prebuilt)
include_guard()
# ND: Turn this off by default, the openal code in the viewer isn't very well maintained, seems
# to have memory leaks, has no option to play music streams
# It probably makes sense to to completely remove it
set(USE_OPENAL ON CACHE BOOL "Enable OpenAL")
# ND: To streamline arguments passed, switch from OPENAL to USE_OPENAL
# To not break all old build scripts convert old arguments but warn about it
if(OPENAL)
message( WARNING "Use of the OPENAL argument is deprecated, please switch to USE_OPENAL")
set(USE_OPENAL ${OPENAL})
endif()
if (USE_OPENAL)
add_library( ll::openal INTERFACE IMPORTED )
if (${LINUX_DISTRO} MATCHES freedesktop)
target_include_directories( ll::openal SYSTEM INTERFACE "${LIBS_PREBUILT_DIR}/include/AL")
endif ()
target_compile_definitions( ll::openal INTERFACE LL_OPENAL=1)
if (${LINUX_DISTRO} MATCHES freedesktop)
use_prebuilt_binary(openal)
file(REMOVE
${ARCH_PREBUILT_DIRS_RELEASE}/libopenal.so
${ARCH_PREBUILT_DIRS_RELEASE}/libopenal.so.1
${ARCH_PREBUILT_DIRS_RELEASE}/libopenal.so.1.24.2
${LIBS_PREBUILT_DIR}/include/AL/al.h
${LIBS_PREBUILT_DIR}/include/AL/alc.h
${LIBS_PREBUILT_DIR}/include/AL/alext.h
${LIBS_PREBUILT_DIR}/include/AL/efx-creative.h
${LIBS_PREBUILT_DIR}/include/AL/efx-presets.h
${LIBS_PREBUILT_DIR}/include/AL/efx.h
)
endif ()
if (FALSE)
find_library(OPENAL_LIBRARY
NAMES
OpenAL32
openal
OpenAL32.lib
libopenal.dylib
libopenal.so
PATHS "${ARCH_PREBUILT_DIRS_RELEASE}" REQUIRED NO_DEFAULT_PATH)
endif ()
include(FindPkgConfig)
if (${LINUX_DISTRO} MATCHES freedesktop)
pkg_search_module(Openal REQUIRED openal)
find_library(ALUT_LIBRARY
NAMES
alut
alut.lib
libalut.dylib
libalut.so
PATHS "${ARCH_PREBUILT_DIRS_RELEASE}" REQUIRED NO_DEFAULT_PATH)
target_link_libraries(ll::openal INTERFACE ${OPENAL_LIBRARY} ${ALUT_LIBRARY})
else ()
pkg_search_module(Openal REQUIRED freealut)
if (DARWIN)
include(DarwinPackages)
endif ()
# Homebrew freealut is built against Apple's OpenAL.framework. The
# viewer links openal-soft, so alutInit and alGenSources talk to
# different libraries and wind playback never gets a source.
if (DARWIN_USE_HOMEBREW)
set(_openal_soft "${DARWIN_HOMEBREW_PREFIX}/opt/openal-soft/lib/libopenal.1.dylib")
find_library(_homebrew_alut
NAMES libalut.0.dylib alut
PATHS ${Openal_LIBRARY_DIRS}
NO_DEFAULT_PATH
REQUIRED)
execute_process(
COMMAND otool -L "${_homebrew_alut}"
OUTPUT_VARIABLE _alut_deps
COMMAND_ERROR_IS_FATAL ANY)
if (_alut_deps MATCHES "/System/Library/Frameworks/OpenAL.framework/Versions/A/OpenAL")
set(_alut_dir "${CMAKE_BINARY_DIR}/openal-compat")
file(MAKE_DIRECTORY "${_alut_dir}")
set(_alut_rewritten "${_alut_dir}/libalut.0.dylib")
execute_process(COMMAND "${CMAKE_COMMAND}" -E copy "${_homebrew_alut}" "${_alut_rewritten}")
execute_process(
COMMAND install_name_tool
-change /System/Library/Frameworks/OpenAL.framework/Versions/A/OpenAL "${_openal_soft}"
-id "${_alut_rewritten}"
"${_alut_rewritten}"
COMMAND_ERROR_IS_FATAL ANY)
execute_process(
COMMAND codesign -f -s - "${_alut_rewritten}"
COMMAND_ERROR_IS_FATAL ANY)
list(TRANSFORM Openal_LIBRARIES REPLACE "^alut$" "${_alut_rewritten}")
message(STATUS "freealut retargeted onto openal-soft: ${_alut_rewritten}")
endif ()
endif ()
endif ()
target_include_directories(ll::openal SYSTEM INTERFACE ${Openal_INCLUDE_DIRS})
target_link_directories(ll::openal INTERFACE ${Openal_LIBRARY_DIRS})
target_link_libraries(ll::openal INTERFACE ${Openal_LIBRARIES})
endif ()
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