2014-09-02 06:11:53 -0600 | asked a question | fatal error: No such file or directory I was testing very first program in OpenCV. I am using OpenCV with gcc and CMake. My .cpp file is in folder "G:\OpenCV\myproj\DisplayImage.cpp" It is as Follow: include <stdio.h>include <opencv2 opencv.hpp="">using namespace cv; int main(int argc, char** argv ) { if ( argc != 2 ) { printf("usage: DisplayImage.out <image_path>\n"); return -1; } } When I compile and run using following command: g++ -l G:\OpenCV\opencv\sources\release\install\include -L G:\OpenCV\opencv\sources\release\lib DisplayImage.cpp -l opencv_core249 -l opencv_highgui249 -o DisplayImage.out It gives following error: DisplayImage.cpp:2:30: fatal error: opencv2/opencv.hpp: No such file or directory include <opencv2 opencv.hpp=""> ^compilation terminated --Kind suggest me a solution with reason for error |