@richard so like promised: I am trying to install the thing from scratch in a conda enviroment: And i get following error:
cmake: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by cmake)
cmake: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by cmake)
cmake: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by cmake)
cmake: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by cmake)
Failed to run 'bash tools/build_pytorch_libs.sh --with-nnpack --with-mkldnn caffe2 nanopb libshm gloo THD'

cmake and gcc are both installed