opencv+opencv_contrib编译过程

1、添加hosts，加快下载速度
    140.82.113.4 github.com
    199.232.69.194 github.global.ssl.fastly.net

2、更新包
    sudo apt-get update
    sudo apt-get upgrade

3、安装依赖项
    sudo apt-get remove x264 libx264-dev
    sudo apt-get install build-essential checkinstall cmake pkg-config yasm
    sudo apt-get install git gfortran
    sudo apt-get install libjpeg8-dev libjasper-dev libpng12-dev
    sudo apt-get install libtiff5-dev
    sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libdc1394-22-dev
    sudo apt-get install libxine2-dev libv4l-dev
    sudo apt-get install libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev
    sudo apt-get install qt5-default libgtk2.0-dev libtbb-dev
    sudo apt-get install libatlas-base-dev
    sudo apt-get install libfaac-dev libmp3lame-dev libtheora-dev
    sudo apt-get install libvorbis-dev libxvidcore-dev
    sudo apt-get install libopencore-amrnb-dev libopencore-amrwb-dev
    sudo apt-get install x264 v4l-utils

# Optional dependencies
    sudo apt-get install libprotobuf-dev protobuf-compiler
    sudo apt-get install libgoogle-glog-dev libgflags-dev
    sudo apt-get install libgphoto2-dev libeigen3-dev libhdf5-dev doxygen

4、下载opencv库和opencv_contrib库，并放到同一目录下
    git clone https://github.com/opencv/opencv.git
    git clone https://github.com/opencv/opencv_contrib.git

进入他们各自的根目录切换到4.1.1分支（一定要保证这两个库的版本一致）:
    cd opencv
    git checkout 4.1.1
    cd opencv_contrib
    git checkout 4.1.1

进入opencv目录下：mkdir build && cd build

5、执行cmake命令(不要忘记后边的两个点):
cmake -D CMAKE_INSTALL_PREFIX=/usr/local \
      -D CMAKE_BUILD_TYPE=Release \
      -D WITH_CUDA=ON \
      -D WITH_TBB=ON \
      -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules ..

6、下面是可能遇到的问题：
问题：opencv/modules/core/include/opencv2/core/private.hpp:66:12: fatal error: Eigen/Core: No such file or directory
    #  include
解决办法：https://blog.csdn.net/dulingwen/article/details/105727583\

问题：/boostdesc.cpp:654:20: fatal error: boostdesc_bgm.i: No such file or directory
        #include "boostdesc_bgm.i"
解决办法：https://blog.csdn.net/AlexWang30/article/details/99612188

 

问题：/opencv_contrib/modules/xfeatures2d/test/test_features2d.cpp:51:10: fatal error: features2d/test/test_detectors_regression.impl.hpp: No such file or directory
    #include "features2d/test/test_detectors_regression.impl.hpp"
解决办法：https://blog.csdn.net/HanShu6/article/details/106269831/