wonder

https://stackoverflow.com/questions/51308292/swig-linker-undefined-symbol-zn2cv8fastfreeepv-cvfastfreevoid You have to pass libraries and library-paths to the build-process by using arguments libraries and library_dirs ```py ext = Extension(.... libraries=["opencv_xfeatures2d", "opencv_features2d", "opencv_highgui", "opencv_core"], library_dirs=['/usr/local/lib'] ) ```

1. in `ipybind-master` run `jupyter lab` or `jupyter notebook` 2. just include pybind11 path ``` import ipybind ``` ``` %load_ext ipybind %pybind11_capture %pybind11_capture %pybind11_capture on %pybind11_capture off %pybind11_capture 1 %pybind11_capture...