I checked that my CMake is recent enough; it's at 3.31.6 while 3.30.0 is the minimum version needed for free-threaded CPython support (such versions are tracked here, I'll add Boost.Python to that ...

Consequently, stand-alone programs come with a fair amount of overhead: A simple “Hello, world” command-line script for Python 2.7 produces a 2.6MB 32-bit Windows executable, along with 7.4MB ...