Clion installation + MinGW configuration + opencv installation

CLion install +MinGW To configure +Opencv install

1. clion Official website Register with student email jetbrains account number , It can be used for one year free jetbrains Software for , After one year, you can continue to extend it on the official website .

2. installed clion After that, configure the compilation environment ,win10 Common environments are MinGW. visit MingW-W64 Official website , And click... At the top of the page Downloads link . stay Downloads Page hits MingW-W64-builds link . Click... On the next page SourceForge link . Then you can download mingw-w64-install.exe This installation file , And then install . choice x86_64-posix-seh This version .

3. function CLion, stay Settings → Build, Execution, Deployment Find toolchains. And then click + Number , add to MinGW The compiler of .

4. New projects . choice C++ executable, Select a project's location, then creat. Wait a while after the new one , When the progress bar in the lower right corner is completed , You can write your code , The green arrow in the upper right corner executes . choice MinGW The installation directory , Such as “‪D:\MinGW”. After selection CLion It will automatically scan the compiler tools in the directory , If you can't scan it, you can add it manually . Click on OK, Complete the configuration .

5. To configure opencv. There are two ways , The first is first Cmake, And then use Cmake compile opencv. The second method is to directly download the compiled opencv, Here is a github link , Download and unzip to your favorite path , And then “opencv route \x64\mingw\bin” Environment variables added to the system , then “opencv route \x64\mingw\lib” All of them ".lib.a" Put the compressed file into “C:\Windows\SysWOW64” Under the table of contents （64 position ）, 32 Is it “C:\Windows\System32”.

6. Write programs using opencv At the time of cmakelist Add the following ：

   cmake_minimum_required(VERSION 3.14)
   project(demo)
   
   set(OpenCV_DIR  D:\\OpenCV-MinGW-Build-OpenCV-4.1.1-x64)
   find_package(OpenCV REQUIRED)
   
   set(CMAKE_CXX_STANDARD 11)
   
   add_executable(demo testOpencv.cpp)
   
   include_directories(${
         OpenCV_INCLUDE_DIRS})
   target_link_libraries(demo  ${
         OpenCV_LIBS})
   

7. Test with the following code ：

   """testOpencv.cpp"""
   #include <iostream>
   #include <opencv2/highgui/highgui.hpp>
   
   using namespace std;
   using namespace cv;
   
   int main() {
         
       Mat img = imread("C:\\Users\\19728\\Desktop\\timg.jpg");
       if (img.empty()) {
         
           cout << "Error" << endl;
           return -1;
       }
       namedWindow("pic", WINDOW_FULLSCREEN);
       imshow("pic", img);
       waitKey();
       return 0;
   }
   

   The results are as follows ：