dolphin/CMakeTests/CheckLib.cmake

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CMake
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find_package(PkgConfig)
macro(_internal_message msg)
if(NOT ${_is_quiet})
message(STATUS "${msg}")
endif()
endmacro()
macro(check_lib var pc lib)
set(_is_required 0)
set(_is_quiet 0)
set(_arg_list ${ARGN})
foreach(_arg ${ARGN})
if(_arg STREQUAL "REQUIRED")
list(REMOVE_ITEM _arg_list "REQUIRED")
set(_is_required 1)
endif()
if(_arg STREQUAL "QUIET")
list(REMOVE_ITEM _arg_list "QUIET")
set(_is_quiet 1)
endif()
endforeach()
if(PKG_CONFIG_FOUND AND NOT ${var}_FOUND)
pkg_search_module(${var} QUIET ${pc})
endif()
if(${var}_FOUND)
if(${var}_INCLUDE_DIRS)
include_directories(${${var}_INCLUDE_DIRS})
endif()
# Make sure include directories for headers found using find_path below
# are re-added when reconfiguring
if(${var}_INCLUDE)
include_directories(${${var}_INCLUDE})
endif()
_internal_message("${lib} found")
else()
find_library(${var} ${lib})
if(_arg_list)
find_path(${var}_INCLUDE ${_arg_list})
else()
set(${var}_INCLUDE FALSE)
endif()
if(${var} AND ${var}_INCLUDE)
include_directories(${${var}_INCLUDE})
_internal_message("${lib} found")
set(${var}_FOUND 1 CACHE INTERNAL "")
else()
if(_is_required)
message(FATAL_ERROR "${lib} is required but not found")
else()
_internal_message("${lib} not found")
endif()
endif()
endif()
endmacro()
macro(check_libav)
if(PKG_CONFIG_FOUND)
pkg_check_modules(LIBAV libavcodec>=54.35.0 libavformat>=54.20.4
libswscale>=2.1.1 libavutil>=52.3.0)
else()
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if(WIN32)
add_library(avcodec STATIC IMPORTED)
set_target_properties(avcodec PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/include
IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/lib/avcodec.lib
)
add_library(avformat STATIC IMPORTED)
set_target_properties(avformat PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/include
IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/lib/avformat.lib
)
add_library(avutil STATIC IMPORTED)
set_target_properties(avutil PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/include
IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/lib/avutil.lib
)
add_library(swresample STATIC IMPORTED)
set_target_properties(swresample PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/include
IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/lib/swresample.lib
)
add_library(swscale STATIC IMPORTED)
set_target_properties(swscale PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/include
IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/Externals/ffmpeg/lib/swscale.lib
)
set(LIBAV_FOUND ON)
set(LIBAV_LIBRARIES avcodec avformat avutil swresample swscale)
else()
# Attempt to find it through static means
set(LIBAV_LDFLAGS avformat avcodec swscale avutil)
set(CMAKE_REQUIRED_LIBRARIES ${LIBAV_LDFLAGS})
CHECK_CXX_SOURCE_COMPILES(
"extern \"C\" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavutil/mathematics.h>
#include <libswscale/swscale.h>
}
int main(int argc, char **argv)
{
av_register_all();
return 0;
}"
LIBAV_FOUND)
unset(CMAKE_REQUIRED_LIBRARIES)
endif()
endif()
if(LIBAV_FOUND)
message(STATUS "libav/ffmpeg found, enabling AVI frame dumps")
add_definitions(-DHAVE_LIBAV)
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if(LIBAV_INCLUDE_DIRS)
include_directories(${LIBAV_INCLUDE_DIRS})
endif()
else()
message(STATUS "libav/ffmpeg not found, disabling AVI frame dumps")
endif()
endmacro()