opencv 打包Android 压缩so大小

cmake -D CMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake \

  -D CMAKE_BUILD_TYPE=Release \
  -D CMAKE_INSTALL_PREFIX=install \
  -D ANDROID_ABI=armeabi-v7a \
  -D ANDROID_PLATFORM=android-21 \
  -D BUILD_SHARED_LIBS=ON \
  -D BUILD_opencv_core=ON \
  -D BUILD_opencv_imgproc=ON \
  -D BUILD_opencv_features2d=ON \
  -D BUILD_opencv_world=OFF \
  -D BUILD_TESTS=OFF \
  -D BUILD_PERF_TESTS=OFF \
  -D BUILD_EXAMPLES=OFF \
  -D BUILD_opencv_calib3d=OFF \
  -D BUILD_opencv_dnn=OFF \
  -D BUILD_opencv_ml=OFF \
  -D BUILD_opencv_objdetect=OFF \
  -D BUILD_opencv_photo=OFF \
  -D BUILD_opencv_video=OFF \
  -D BUILD_opencv_videoio=OFF \
  -D BUILD_opencv_highgui=OFF \
  -D BUILD_opencv_imgcodecs=OFF \
  -D BUILD_opencv_shape=OFF \
  -D BUILD_opencv_stitching=OFF \
  -D BUILD_opencv_superres=OFF \
  -D BUILD_opencv_ts=OFF \
  -D BUILD_opencv_flann=OFF \
  -D BUILD_opencv_gapi=OFF \
  -D BUILD_opencv_java=OFF \
  -D OPENCV_ENABLE_NONFREE=OFF \
  -D BUILD_ANDROID_PROJECTS=OFF \
  ..