obs-studio/cmake/Modules/FindLibx264.cmake

# Once done these will be defined:
#
#  LIBX264_FOUND
#  LIBX264_INCLUDE_DIRS
#  LIBX264_LIBRARIES
#
# For use in OBS: 
#
#  X264_INCLUDE_DIR

find_package(PkgConfig QUIET)
if (PKG_CONFIG_FOUND)
	pkg_check_modules(_X264 QUIET x264)
endif()

if(CMAKE_SIZEOF_VOID_P EQUAL 8)
	set(_lib_suffix 64)
else()
	set(_lib_suffix 32)
endif()

set(X264_PATH_ARCH x264Path${_lib_suffix})
set(FFMPEG_PATH_ARCH FFmpegPath${_lib_suffix})

find_path(X264_INCLUDE_DIR
	NAMES x264.h
	HINTS
		${_X264_INCLUDE_DIRS}
		"${CMAKE_SOURCE_DIR}/additional_install_files/include"
		"$ENV{obsAdditionalInstallFiles}/include"
		ENV x264Path
		ENV FFmpegPath
		ENV ${X264_PATH_ARCH}
		ENV ${FFMPEG_PATH_ARCH}
	PATHS
		/usr/include /usr/local/include /opt/local/include /sw/include)

find_library(X264_LIB
	NAMES ${_X264_LIBRARIES} x264 libx264
	HINTS
		${_X264_LIBRARY_DIRS}
		"${X264_INCLUDE_DIR}/../lib"
		"${X264_INCLUDE_DIR}/../lib${_lib_suffix}"
		"${X264_INCLUDE_DIR}/../libs${_lib_suffix}"
		"${X264_INCLUDE_DIR}/lib"
		"${X264_INCLUDE_DIR}/lib${_lib_suffix}"
	PATHS
		/usr/lib /usr/local/lib /opt/local/lib /sw/lib)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Libx264 DEFAULT_MSG X264_LIB X264_INCLUDE_DIR)
mark_as_advanced(X264_INCLUDE_DIR X264_LIB)

if(LIBX264_FOUND)
	set(LIBX264_INCLUDE_DIRS ${X264_INCLUDE_DIR})
	set(LIBX264_LIBRARIES ${X264_LIB})
endif()