CODEWITHSUNDEEP
c++opencvmingw
rassie
rassie

Reputation: 23

MinGW C++ compiler cant find OpenCV in the system path

So I'm getting an error stating "fatal error: opencv2\core\mat.hpp: No such file or directory" when trying to compile a small c++ file from .cpp with MinGW. It happens in one form or another in Sublime Text 3, Atom, and on the command line with "gcc myfile.cpp". I should note that I'm on Windows 10. Here's the code:

#include <iostream>
#include <opencv2\core\mat.hpp>
#include <opencv2\core.hpp>
#include <opencv2\highgui.hpp>
#include <opencv2\core\types.hpp>
#include <opencv2\imgproc.hpp>

int main()
{
    std::cout << "Hello World!\n";
    cv::Mat img = cv::imread("despair.jpg");
    cv::cvtColor(img, img, cv::COLOR_RGBA2GRAY, 1);
    cv::imshow("1", img);
    cv::waitKey(0);

    cv::Mat mask = cv::Mat(img.rows, img.cols, CV_8UC1, cv::Scalar(255));
    cv::Rect_ <char> roi = cv::Rect_ <cv::Point>(cv::Point(0, 0), cv::Point(10, 10));
    cv::rectangle(mask, roi, cv::Scalar(0), -1);
    cv::Scalar colors = cv::mean(img, mask);
}

Things I've done and tried:

Things in my system path right now:

I took this code out of a larger project to test what was going on with it and at this point I'm at my wits end trying to figure out what's wrong. Please send help.

Upvotes: 2

Views: 1199

Answers (1)

nevilad
nevilad

Reputation: 985

Add -I option with path to opencv includes and -L with path to opencv libraries, like this:

gcc -IC:\OpenCV\opencv\build\include -LC:\OpenCV\opencv\build\x64\vc15\lib test_opencv.cpp

Upvotes: 1

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