ubunu18.04源码安装opencv 4.8.0

第一步更新并安装依赖

sudo apt update

sudo apt install build-essential cmake git pkg-config libgtk-3-dev \

libavcodec-dev libavformat-dev libswscale-dev libv4l-dev \

libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev \

fortran openexr libatlas-base-dev python3-dev python3-numpy \

libtbb2 libtbb-dev libdc1394-22-dev

第二步创建编译目录

cd ~/opencv_build/opencv

mkdir build && cd build

mkdir ~/opencv_build && cd ~/opencv_build

第三步clone代码切换分支

mkdir ~/opencv_build && cd ~/opencv_build

git clone https://github.com/opencv/opencv.git

cd opencv

git checkout 4.8.0

cd ..

git clone https://github.com/opencv/opencv_contrib.git

cd opencv_contrib

git checkout 4.8.0

cd ..

第四步设置编译选项

cmake -D CMAKE_BUILD_TYPE=RELEASE \

               -D CMAKE_INSTALL_PREFIX=/usr/local \

               -D INSTALL_C_EXAMPLES=ON \

              -D INSTALL_PYTHON_EXAMPLES=ON \

              -D OPENCV_GENERATE_PKGCONFIG=ON \

              -D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules \

             -D BUILD_EXAMPLES=ON ..

第五步执行编译命令

make -j$(nproc)

sudo make install

sudo ldconfig