hanniakku

I figured out why that was happening. I was running this code on a PC with RTX 3080 GPU. I believe there is a Cudatoolkit compatibility issue for this GPU....

Maybe this link helps [https://stackoverflow.com/questions/56083725/macos-build-issues-lstdc-not-found-while-building-python-package](url) After exporting `export MACOSX_DEPLOYMENT_TARGET=10.9` I ran `CC=clang CXX=clang++ ARCHFLAGS="-arch x86_64" python -m pip install 'git+https://github.com/facebookresearch/detectron2.git'` and the installation went through successfully.