Set up CodeBlocks for OpenCV

      After the installation of CodeBlocks and OpenCV, I want to write a simple program to test if OpenCV works properly.

      Code is simple:

#include <iostream>#include "opencv2/opencv.hpp"using namespace std;using namespace cv;int main( int argc, char** argv ){    String imageName( "~/Pictures/test.jpg" ); // by default    if( argc > 1)    {        imageName = argv[1];    }    Mat image;    image = imread( imageName, IMREAD_COLOR ); // Read the file    if( image.empty() )                      // Check for invalid input    {        cout <<  "Could not open or find the image" << std::endl ;        return -1;    }    namedWindow( "Display window", WINDOW_AUTOSIZE ); // Create a window for display.    imshow( "Display window", image );                // Show our image inside it.    waitKey(0); // Wait for a keystroke in the window    return 0;}

      The key is how to set the following 3:

      (1) Include path( Header path )

      (2) Library path( Linking path )

      (3) Linking so ( Which .so to link with )

      Method 1:

           Because my OpenCV is managed by pkgconfig, so ,  Project -> Build options:

      

      

      In fact :

         pkg-config --cflags opencv means "-I/usr/local/include/opencv -I/usr/local/include"

         pkg-config --libs opencv means "-L/usr/local/lib -lopencv_shape -lopencv_stitching -lopencv_objdetect -lopencv_superres -lopencv_videostab -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_video -lopencv_photo -lopencv_ml -lopencv_imgproc -lopencv_flann -lopencv_core"