Visual Studios 2013 - C++ Linker Error with openCV 3.0 Libs

Question

Their is a problem with the Linker for C++ in my Visual Studios 2013 on Windows 8. I want to use openCV 3.0 with my Visual Studios. All links inside the code will be used normal and IntelliSense recognize the datamembers. But if I want to compile the programm Visual Studios give me following errors:

Fehler 1 error LNK2019: Verweis auf nicht aufgelöstes externes Symbol ""private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z)" in Funktion ""public: __thiscall cv::String::String(char const *)" (??0String@cv@@QAE@PBD@Z)". C:\Users\Marc\Documents\Workspaces\C++_VS\OpenCV_Test\OpenCV_Test\main.obj OpenCV_Test Fehler 2 error LNK2019: Verweis auf nicht aufgelöstes externes Symbol ""private: void __thiscall cv::String::deallocate(void)" (?deallocate@String@cv@@AAEXXZ)" in Funktion ""public: __thiscall cv::String::~String(void)" (??1String@cv@@QAE@XZ)". C:\Users\Marc\Documents\Workspaces\C++_VS\OpenCV_Test\OpenCV_Test\main.obj OpenCV_Test Fehler 3 error LNK2019: Verweis auf nicht aufgelöstes externes Symbol ""public: __thiscall cv::CommandLineParser::CommandLineParser(int,char const * const * const,class cv::String const &)" (??0CommandLineParser@cv@@QAE@HQBQBDABVString@1@@Z)" in Funktion "_main". C:\Users\Marc\Documents\Workspaces\C++_VS\OpenCV_Test\OpenCV_Test\main.obj OpenCV_Test Fehler 4 error LNK2019: Verweis auf nicht aufgelöstes externes Symbol ""public: __thiscall cv::CommandLineParser::~CommandLineParser(void)" (??1CommandLineParser@cv@@QAE@XZ)" in Funktion "_main". C:\Users\Marc\Documents\Workspaces\C++_VS\OpenCV_Test\OpenCV_Test\main.obj OpenCV_Test Fehler 5 error LNK2019: Verweis auf nicht aufgelöstes externes Symbol ""protected: void __thiscall cv::CommandLineParser::getByName(class cv::String const &,bool,int,void *)const " (?getByName@CommandLineParser@cv@@IBEXABVString@2@_NHPAX@Z)" in Funktion ""public: class cv::String __thiscall cv::CommandLineParser::get(class cv::String const &,bool)const " (??$get@VString@cv@@@CommandLineParser@cv@@QBE?AVString@1@ABV21@_N@Z)". C:\Users\Marc\Documents\Workspaces\C++_VS\OpenCV_Test\OpenCV_Test\main.obj OpenCV_Test Fehler 6 error LNK1120: 5 nicht aufgelöste Externe C:\Users\Marc\Documents\Workspaces\C++_VS\OpenCV_Test\Debug\OpenCV_Test.exe 1 1 OpenCV_Test

I installed openCV with the following guide: http://www.minlabz.com/how-to-install-opencv-3-0-0-on-windows-7-and-configure-with-visual-studio-2014/

Here is the little code that I used to test if the openCV dependencies work:

#include "opencv2\highgui\highgui.hpp"
#include "opencv2\core\core.hpp"
#include <stdio.h>

using namespace cv;

int main(int argc, const char** argv)
{
    const char* keyMap;
    //Standard image that will be used if dont exist arguments
    keyMap = "{path     |   |  }";

    //Reading the Callingarguments
    CommandLineParser parser(argc, argv, keyMap);
    String filename = parser.get<String>("path");
}

I hope I don't forgot something simple.

Are there more than 2 libs in C:\opencv\build\x64\vc12\lib? — drescherjm
I could use the staticlib folder in openCV and add all the libraries to the Additional Dependencies from there. I don't tested it yet. But what is the difference between the normal lib and the staticlib folder from opencv? — Steno
I think in this case the linking problem would be essentially the same for static opencv or dll. Since with dll you still need to link to import libraries. — drescherjm
There a only 4 libs: opecv_ts300.lib, opecv_ts300d.lib, opecv_world300.lib and opecv_ts300d.lib. — Steno
I am wrong then.. This is a change from opencv 2.X.X. I deleted my first comment as a result. — drescherjm

CroCo CroCo · Accepted Answer · 2015-05-06T00:38:21

When you installed the OpenCV 3 with visual studio 2013 and cmake , you will find the dlls in

\opencv\msvc\bin\Release for the release mode and the include in \opencv\build\include, therefore invoke the command prompt and type

cl /EHsc main.cpp /Fetest.exe /I D:\CPP_Libraries\opencv_3.0.0\build\include /link /LIBPATH:D:\CPP_Libraries\opencv_3.0.0\msvc\lib\Release opencv_core300.lib

with this sample

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



int main( int argc, char** argv )
{

    std::cout << "\n%%( Random Generator )%%\n"; 
    cv::Mat G = cv::Mat::ones(4,4, CV_64FC1);
    cv::Mat m = cv::Mat::zeros(1,1, CV_64FC1);
    cv::Mat s = cv::Mat::ones(1,1, CV_64FC1);
    std::cout << G << std::endl;
    cv::randn(G, m, s);
    std::cout << G << std::endl;

    return 0;
}

The result is

enter image description here

Visual Studios 2013 - C++ Linker Error with openCV 3.0 Libs

4 Answers