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  • 解决Linux下 C++ opencv 库文件的链接问题

    errors:

    /home/tonyyan/Documents/main.cpp:108: undefined reference to `cv::VideoCapture::read(cv::_OutputArray const&)'
    /home/tonyyan/Documents/main.cpp:130: undefined reference to `cv::putText(cv::_InputOutputArray const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::Point_<int>, int, double, cv::Scalar_<double>, int, int, bool)'
    /home/tonyyan/Documents/main.cpp:131: undefined reference to `cv::putText(cv::_InputOutputArray const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::Point_<int>, int, double, cv::Scalar_<double>, int, int, bool)'
    /home/tonyyan/Documents/main.cpp:134: undefined reference to `cv::imshow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)'
    /home/tonyyan/Documents/main.cpp:135: undefined reference to `cv::waitKey(int)'
    /home/tonyyan/Documents/main.cpp:69: undefined reference to `cv::VideoCapture::~VideoCapture()'
    /home/tonyyan/Documents/main.cpp:68: undefined reference to `cv::Mat::~Mat()'
    /home/tonyyan/Documents/main.cpp:36: undefined reference to `cv::Mat::~Mat()'
    /home/tonyyan/Documents/main.cpp:69: undefined reference to `cv::VideoCapture::~VideoCapture()'
    /home/tonyyan/Documents/main.cpp:68: undefined reference to `cv::Mat::~Mat()'
    /home/tonyyan/Documents/main.cpp:36: undefined reference to `cv::Mat::~Mat()'

    solution:

    add the following arguments to g++:

    -lopencv_core -lopencv_imgproc -lopencv_highgui

    in tasks.json of vscode:

                    "-lopencv_core",
                    "-lopencv_imgproc",
                    "-lopencv_highgui",

      

    reference: 

    https://stackoverflow.com/questions/24337932/cannot-get-opencv-to-compile-because-of-undefined-references

    补充 error:

    9: undefined reference to `cv::VideoCapture::VideoCapture()'

    solution:

    "-lopencv_videoio",

    总之,缺什么就链接什么库文件。

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  • 原文地址:https://www.cnblogs.com/mrlonely2018/p/14889254.html
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