1. 下载代码
mkdir /tmp/opencv
cd /tmp/opencv
curl -Lo opencv.zip https://github.com/opencv/opencv/archive/4.2.0.zip
unzip -q opencv.zip
curl -Lo opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.2.0.zip
unzip -q opencv_contrib.zip
如果网络不好下载一直要断开请用git单个文件下载
$ mkdir opencv-4.2.0
$ cd opencv-4.2.0
$ git clone https://github.com/opencv/opencv.git
$ git clone https://github.com/opencv/opencv_contrib.git
切换到指定标签
$ cd opencv
$ git checkout -b 4.2.0 4.2.0
$ cd ../opencv_contrib
$ git checkout -b 4.2.0 4.2.0
2. 依赖库安装
[compiler] sudo apt-get install build-essential [required] sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev [optional] sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
sudo yum -y in