linux下opencv编译

tar -xzvf opencv-3.3.0.tar.gz
cd opencv-3.3.0/
cd ..
mkdir my_build_dir
cd my_build_dir
cmake ../opencv-3.3.0 -DWITH_GTK_2_X=ON -DCMAKE_INSTALL_PREFIX=/usr/local
make    # make -j4表示开4个线程来进行编译
make install

 如果安装ffmpeg后发现找不到ffmpeg相关的so，可以试试export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig