anchor.diff:  S = "${WORKDIR}/git"
   
   do_unpack_extra() {
  -    mkdir -p ${S}/3rdparty/tinydnn/
  -    tar xzf ${WORKDIR}/v1.0.0a3.tar.gz -C ${S}/3rdparty/tinydnn/
       tar xzf ${WORKDIR}/ipp/ippicv/${IPP_FILENAME} -C ${WORKDIR}
       cp ${WORKDIR}/vgg/*.i ${WORKDIR}/contrib/modules/xfeatures2d/src
       cp ${WORKDIR}/boostdesc/*.i ${WORKDIR}/contrib/modules/xfeatures2d/src
  
positive.code: 
  PACKAGECONFIG[amdblas] = "-DWITH_OPENCLAMDBLAS=ON,-DWITH_OPENCLAMDBLAS=OFF,libclamdblas,"
  PACKAGECONFIG[amdfft] = "-DWITH_OPENCLAMDFFT=ON,-DWITH_OPENCLAMDFFT=OFF,libclamdfft,"
  PACKAGECONFIG[dnn] = "-DBUILD_opencv_dnn=ON -DPROTOBUF_UPDATE_FILES=ON -DBUILD_PROTOBUF=OFF,-DBUILD_opencv_dnn=OFF,protobuf protobuf-native,"
  PACKAGECONFIG[eigen] = "-DWITH_EIGEN=ON,-DWITH_EIGEN=OFF,libeigen gflags glog,"
  PACKAGECONFIG[freetype] = "-DBUILD_opencv_freetype=ON,-DBUILD_opencv_freetype=OFF,freetype,"
  PACKAGECONFIG[gphoto2] = "-DWITH_GPHOTO2=ON,-DWITH_GPHOTO2=OFF,libgphoto2,"
  
negative.code:     git://github.com/opencv/opencv_3rdparty.git;branch=ippicv/master_20180518;destsuffix=ipp;name=ipp \
      git://github.com/opencv/opencv_3rdparty.git;branch=contrib_xfeatures2d_boostdesc_20161012;destsuffix=boostdesc;name=boostdesc \
      git://github.com/opencv/opencv_3rdparty.git;branch=contrib_xfeatures2d_vgg_20160317;destsuffix=vgg;name=vgg \
      file://0001-3rdparty-ippicv-Use-pre-downloaded-ipp.patch \
      file://uselocalxfeatures.patch;patchdir=../contrib/ \
      file://0001-Add-missing-multi-line-separator.patch;patchdir=../contrib/ \
  