vcmi/cmake_modules/FindFFMPEG_swscale.cmake

# Find the FFmpeg library
#
# Sets
#   FFMPEG_INCLUDE_DIR
#   FFMPEG_LIBRARIES

FIND_PATH( FFMPEG_INCLUDE_DIR NAMES libavcodec/avcodec.h ffmpeg/avcodec.h
  PATHS /usr/include /usr/local/include /usr/include/ffmpeg
)

IF( FFMPEG_INCLUDE_DIR )

FIND_PROGRAM( FFMPEG_CONFIG ffmpeg-config
  /usr/bin
  /usr/local/bin
  ${HOME}/bin
)

IF( FFMPEG_CONFIG )
  EXEC_PROGRAM( ${FFMPEG_CONFIG} ARGS "--libs avformat" OUTPUT_VARIABLE FFMPEG_LIBS )
  SET( FFMPEG_LIBRARIES "${FFMPEG_LIBS}" )
  
ELSE( FFMPEG_CONFIG )

  FIND_LIBRARY( FFMPEG_avcodec_LIBRARY avcodec
    /usr/lib
    /usr/local/lib
    /usr/lib64
    /usr/local/lib64
  )

  FIND_LIBRARY( FFMPEG_avformat_LIBRARY avformat
    /usr/lib
    /usr/local/lib
    /usr/lib64
    /usr/local/lib64
  )
  
  FIND_LIBRARY( FFMPEG_avutil_LIBRARY avutil
    /usr/lib
    /usr/local/lib
    /usr/lib64
    /usr/local/lib64
  )
  
  FIND_LIBRARY( FFMPEG_swscale_LIBRARY swscale
    /usr/lib
    /usr/local/lib
    /usr/lib64
    /usr/local/lib64
  )

  IF( FFMPEG_avcodec_LIBRARY )
  IF( FFMPEG_avformat_LIBRARY )

    SET( FFMPEG_LIBRARIES ${FFMPEG_avformat_LIBRARY} ${FFMPEG_avcodec_LIBRARY} )
    IF( FFMPEG_avutil_LIBRARY )
       SET( FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${FFMPEG_avutil_LIBRARY} )
    ENDIF( FFMPEG_avutil_LIBRARY )
    IF( FFMPEG_swscale_LIBRARY )
       SET( FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${FFMPEG_swscale_LIBRARY} )
    ENDIF( FFMPEG_swscale_LIBRARY )

  ENDIF( FFMPEG_avformat_LIBRARY )
  ENDIF( FFMPEG_avcodec_LIBRARY )

ENDIF( FFMPEG_CONFIG )

ENDIF( FFMPEG_INCLUDE_DIR )

IF (APPLE)
    SET(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} "-framework VideoDecodeAcceleration -framework CoreVideo -lbz2")
ENDIF()

INCLUDE (FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(FFMPEG DEFAULT_MESSAGE FFMPEG_INCLUDE_DIR FFMPEG_LIBRARIES)