49 lines
2.4 KiB
CMake
49 lines
2.4 KiB
CMake
add_library(library-headers INTERFACE)
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# libfdk-aac headers
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find_path(FDK_AAC_INCLUDES NAMES fdk-aac/aacdecoder_lib.h)
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if (FDK_AAC_INCLUDES STREQUAL "FDK_AAC_INCLUDES-NOTFOUND")
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message(STATUS "fdk_aac headers not found, using bundled headers.")
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target_include_directories(library-headers INTERFACE ./library-headers/fdk-aac/include)
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else()
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message(STATUS "Using headers from system fdk_aac")
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target_include_directories(library-headers SYSTEM INTERFACE ${FDK_AAC_INCLUDES})
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endif()
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# FFmpeg headers
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find_path(AVUTIL_INCLUDES NAMES libavutil/avutil.h)
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find_path(AVCODEC_INCLUDES NAMES libavcodec/avcodec.h)
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find_path(AVFORMAT_INCLUDES NAMES libavformat/avformat.h)
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find_path(AVFILTER_INCLUDES NAMES libavfilter/avfilter.h)
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find_path(SWRESAMPLE_INCLUDES NAMES libswresample/swresample.h)
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# Make sure all the headers are found and from the same place, so we don't
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# have missing or mismatched components.
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if (AVUTIL_INCLUDES STREQUAL "AVUTIL_INCLUDES-NOTFOUND"
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OR NOT AVCODEC_INCLUDES STREQUAL AVUTIL_INCLUDES
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OR NOT AVFORMAT_INCLUDES STREQUAL AVUTIL_INCLUDES
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OR NOT AVFILTER_INCLUDES STREQUAL AVUTIL_INCLUDES
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OR NOT SWRESAMPLE_INCLUDES STREQUAL AVUTIL_INCLUDES)
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message(STATUS "Complete FFmpeg headers not found, using bundled headers.")
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target_include_directories(library-headers INTERFACE ./library-headers/ffmpeg/include)
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else()
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# Extract libavutil version from header.
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file(STRINGS "${AVUTIL_INCLUDES}/libavutil/version.h" AVUTIL_VERSION_DATA
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REGEX "#define LIBAVUTIL_VERSION_(MAJOR|MINOR|MICRO) ")
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set(AVUTIL_VERSION_REGEX "([0-9]+)")
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foreach(v MAJOR MINOR MICRO)
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if("${AVUTIL_VERSION_DATA}" MATCHES "#define LIBAVUTIL_VERSION_${v}[\\t ]+${AVUTIL_VERSION_REGEX}")
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set(AVUTIL_VERSION_${v} "${CMAKE_MATCH_1}")
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endif()
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endforeach()
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set(AVUTIL_VERSION "${AVUTIL_VERSION_MAJOR}.${AVUTIL_VERSION_MINOR}.${AVUTIL_VERSION_MICRO}")
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message(STATUS "Detected FFmpeg libavutil version is ${AVUTIL_VERSION}")
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if ("${AVUTIL_VERSION}" VERSION_LESS "56.30.100")
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message(WARNING "System FFmpeg version is too low (< 4.2), using bundled headers.")
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target_include_directories(library-headers INTERFACE ./library-headers/ffmpeg/include)
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else()
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message(STATUS "Using headers from system FFmpeg")
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target_include_directories(library-headers SYSTEM INTERFACE ${AVUTIL_INCLUDES})
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endif()
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endif()
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