This command forces DPYTHON3_LIBRRY to be python311-d.lib ' This command is mandatory for python311-d. lib 'to be found. Then, run python setup. py bdistw_heel -- build type=Debug to find python311-d.

I encountered similar issues with the "standard" Windows Python install package, which has both the release and debug python libraries/DLLs. I build my app with CMake and boost-python, and actually ...