Dear All, I would like to compile the python interface of nektar. I follow the instruction I found on the GitLab repo. I have already compiled both Nektar++ and Boost.python without any problem. However I don't manage to get rid of this error during the compilation: /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_InternFromString' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_FromFormat' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_FromString' /usr/local/lib/libboost_python.so: undefined reference to `PyBytes_Size' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_AsUTF8' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_FromEncodedObject' /usr/local/lib/libboost_python.so: undefined reference to `PyBytes_AsString' /usr/local/lib/libboost_python.so: undefined reference to `_Py_fopen' /usr/local/lib/libboost_python.so: undefined reference to `PyModule_Create2' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_AsWideChar' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_AsUTF8String' /usr/local/lib/libboost_python.so: undefined reference to `PyUnicode_FromStringAndSize' collect2: error: ld returned 1 exit status libs/numpy/example/CMakeFiles/fromdata.dir/build.make:97: recipe for target 'bin/fromdata' failed make[5]: *** [bin/fromdata] Error 1 CMakeFiles/Makefile2:152: recipe for target 'libs/numpy/example/CMakeFiles/fromdata.dir/all' failed make[4]: *** [libs/numpy/example/CMakeFiles/fromdata.dir/all] Error 2 Makefile:138: recipe for target 'all' failed make[3]: *** [all] Error 2 CMakeFiles/boost-numpy.dir/build.make:110: recipe for target 'ThirdParty/stamp/boost-numpy-build' failed make[2]: *** [ThirdParty/stamp/boost-numpy-build] Error 2 CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/boost-numpy.dir/all' failed make[1]: *** [CMakeFiles/boost-numpy.dir/all] Error 2 Makefile:127: recipe for target 'all' failed make: *** [all] Error 2 I'm working on ubuntu 16.04 LST. What am I doing wrong or what am I missing ? Thank you very much for your help. Regards, Riccardo