:claw author reporting in. At first, I was semi-skeptical too, but not anymore. I've managed to wrap a few C++ libraries (GLM, Filament, PhysX). Not without a manual intervention (claw is still evolving and adapting to C++ edge cases), but those libraries pretty much work now. I'm not sure I would be able to cover all C++ idiosyncrasies, but huge parts are already in.

That said, claw's C++ support is still in the works and I don't recommend diving into that mess yet. Stay tuned for Q1 2021 semi-usable alpha release. Or not. C++ is such a pile of shinies, I'm pretty sure I lost a few screws during :claw development.