Fixing mixed STL implementation with OpenCV

Question

Problem

I am trying to get OpenCV up and running, but I ran into the same problem as this guy and this guy - I get linker errors when trying to build the project with the C++ interface, but with C interface the project builds.

In the second link, the answer is "You're mixing different implementations of STL. VC10 (for OpenCV) and STLPort (for your code)."

How can I make sure that I am only using VC10? (or later versions)

C style (Project builds successfully)

I am using Visual Studio 2012 and OpenCV 3.0

int main( int argc, char** argv )
{
    char* filename = "input.tif";  
    IplImage *img0;

    if( (img0 = cvLoadImage(filename,-1)) == 0 )
       return 0;

    cvNamedWindow( "image", 0 );
    cvShowImage( "image", img0 );
    cvWaitKey(0);  
    cvDestroyWindow("image");
    cvReleaseImage(&img0);
}

C++ style (Project does not build)

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

    Mat image;
    const string &filename = "input.tif";
    image = imread(filename, IMREAD_COLOR); // Read the file

    if(! image.data ) // Check for invalid input
    {
        std::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.
}

Errors:

1>Source.obj : error LNK2019: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) referenced in function "public: __thiscall cv::String::String(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0String@cv@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z)
1>Source.obj : error LNK2019: unresolved external symbol "private: void __thiscall cv::String::deallocate(void)" (?deallocate@String@cv@@AAEXXZ) referenced in function "public: __thiscall cv::String::~String(void)" (??1String@cv@@QAE@XZ)
1>Source.obj : error LNK2019: unresolved external symbol "class cv::Mat __cdecl cv::imread(class cv::String const &,int)" (?imread@cv@@YA?AVMat@1@ABVString@1@H@Z) referenced in function _main
1>Source.obj : error LNK2019: unresolved external symbol "void __cdecl cv::namedWindow(class cv::String const &,int)" (?namedWindow@cv@@YAXABVString@1@H@Z) referenced in function _main
1>Source.obj : error LNK2019: unresolved external symbol "void __cdecl cv::imshow(class cv::String const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABVString@1@ABV_InputArray@1@@Z) referenced in function _main

Include and lib path settings in VS

C/C++/General/Additional Include Directories: C:\opencv\build\include
Linker/General/Additional Library Directories: \n C:\opencv\build\x86\vc11\lib
Linker/Input/Additional Dependencies: opencv_calib3d2410d.lib opencv_contrib2410d.lib opencv_core2410d.lib opencv_features2d2410d.lib opencv_flann2410d.lib opencv_gpu2410d.lib opencv_highgui2410d.lib opencv_imgproc2410d.lib opencv_legacy2410d.lib opencv_ml2410d.lib opencv_nonfree2410d.lib opencv_objdetect2410d.lib opencv_ocl2410d.lib opencv_photo2410d.lib opencv_stitching2410d.lib opencv_superres2410d.lib opencv_ts2410d.lib opencv_video2410d.lib opencv_videostab2410d.lib

@Attaque I'm pretty sure you don't mean the [tag:stl], removed the tag. Please read the tag wiki before adding it next time. Also you should change the text in your question and refer to the c++ standard library instead. — πάντα ῥεῖ, Oct 13 '15 at 12:42
I apologize. Since it was based on the other questions I linked, I did not think about it too much. This might be part of the problem, I have not had the need to use a different library than what is provided with VS. Could you maybe do the change? — Nicolai Lissau, Oct 13 '15 at 12:54
I completely agree Miki :) Unfortunately.. I can send the project to you if you would like give it a run? — Nicolai Lissau, Oct 13 '15 at 13:05
@Attaque static or dynamic libs? I try setting up a new VS12 project — Miki, Oct 13 '15 at 13:11
dynamic. I followed this: http://docs.opencv.org/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html — Nicolai Lissau, Oct 13 '15 at 13:16
works ok for me.. well, you're missing a waitKey(); in your C++ code, but that's not the issue here — Miki, Oct 13 '15 at 13:22
I have no idea how to fix this then. Is it a problem that i have both vs12 and vs15 installed? — Nicolai Lissau, Oct 13 '15 at 13:26
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/92149/discussion-between-attaque-and-miki). — Nicolai Lissau, Oct 13 '15 at 13:30

score 1 · Accepted Answer · answered Oct 13 '15 at 15:18

1

From the discussion in chat, it turns out that the OP was linking against OpenCV 2.4.10 instead of OpenCV 3.0.

By correcting the linked libraries the issue is solved.

answered Oct 13 '15 at 15:18

Miki

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Fixing mixed STL implementation with OpenCV

1 Answers1