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Enter the undefined link to `cv :: fastFree (void *) '

I started a tutorial for opencv 2.4.7 on Win8, the latest MinGW and Eclipse Kepler R1, CDT. The C ++ compiler includes links to [path-to-opencv] \ open247 \ build \ include.

in the MinGW C ++ linker I add the library path [path to opencv] \ open247 \ build \ x64 \ vc11 \ lib. The vc11 directory contains the VisualStudio libraries from what I read. Is it still good to compile them using MinGW?

I added the core and highgui library for this example (I don’t think we need more than those).

However, for this simple downtime code below, I raise the following compilation error.

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

using namespace cv;
using namespace std;

int main(){
    Mat image;
}

Compilation error:

Description Resource    Path    Location    Type
undefined reference to `cv::fastFree(void*)'    FirstOpenCV     line 278, external location: C:\Users\John\Documents\Software\opencv247\build\include\opencv2\core\mat.hpp  C/C++ Problem

What is the reason for this?

If I add

namedWindow("testWindow", 1);

I even get this error

Description Resource    Path    Location    Type
undefined reference to `cv::namedWindow(std::string const&, int)'   main.cpp    /FirstOpenCV/src    line 23 C/C++ Problem
+4
1

?

-lopencv_core
-lopencv_highgui
-L<opencv_library_path>

/. ( .)

+6

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