cmake 命令：

 cmake -D UILD_opencv_python3=YES -D CMAKE_BUILD_TYPE=Debug -D CMAKE_INSTALL_PREFIX=/home/dinghtao/install -D OPENCV_EXTRA_MODULES=../opencv_contrib-4.3.0/modules D OPENCV_GENERATE_PKGCONFIG=ON  -D INSTALL_PYTHON_EXAMPLES=ON -D INSTALL_C_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D PYTHON3_LIBRARIES=/usr/lib/i386-linux-gnu/libpython3.5m.so.1 -D PYTHON3_EXECUTABLE=/usr/bin/python3 -D WITH_LIBV4L=ON -D BUILD_DOCS=ON ..

有两处配置错误，暂时没解决：

-- The imported target "openjpip_server" references the file"/usr/lib/i386-linux-gnu/libopenjpip_server.a"
but this file does not exist.  Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained"/usr/lib/i386-linux-gnu/openjpeg-2.1/OpenJPEGTargets.cmake"
but not all the files it references.-- Could NOT find Atlas (missing:  Atlas_CLAPACK_INCLUDE_DIR) 

但最后make编译能通过。