Building error

[Michele1996]

Hi, I would like to use the work in the repository but when I compile I get
/usr/bin/ld: CMakeFiles/gcn_ftr.dir/src/main.cc.o: in function main': /home/michele/semantic_feature_points/src/main.cc:22: undefined reference to cv::imread(std::string const&, int)'
/usr/bin/ld: /home/michele/semantic_feature_points/src/main.cc:70: undefined reference to cv::imshow(std::string const&, cv::_InputArray const&)' /usr/bin/ld: CMakeFiles/gcn_ftr.dir/src/GCNextractor.cc.o: in function Mat':
/usr/local/include/opencv4/opencv2/core/mat.inl.hpp:591: undefined reference to cv::error(int, std::string const&, char const*, char const*, int)' /usr/bin/ld: /usr/local/include/opencv4/opencv2/core/mat.inl.hpp:577: undefined reference to cv::error(int, std::string const&, char const*, char const*, int)'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [CMakeFiles/gcn_ftr.dir/build.make:129: gcn_ftr] Error 1
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/gcn_ftr.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

Do you know why? (I'm using Opencv 4,Python 3.8 , Ubuntu 20.04, pytorch 1.12