cmake HAVE_FFMPEG_AVFORMAT_ALLOC_OUTPUT_CONTEXT2 examples

ucla-vision/xivo thirdparty/Pangolin/CMakeModules/FindFFMPEG.cmake :75 

CHECK_CXX_SOURCE_COMPILES(
     "#include \"${AVCODEC_INCLUDE_DIR}/libavformat/avformat.h\"
      int main() {
        &avformat_alloc_output_context2;
      }" HAVE_FFMPEG_AVFORMAT_ALLOC_OUTPUT_CONTEXT2
   )

phdsky/ORBSLAM24Windows Thirdparty/Pangolin/CMakeModules/FindFFMPEG.cmake :66 

CHECK_CXX_SOURCE_COMPILES(
     "#include \"${AVCODEC_INCLUDE_DIR}/libavformat/avformat.h\"
      int main() {
        &avformat_alloc_output_context2;
      }" HAVE_FFMPEG_AVFORMAT_ALLOC_OUTPUT_CONTEXT2
   )