Comment by seritools

> that kind of configuration is a big headache to build on

Not really, I've done just that (though in the end I didn't need full /NODEFAULTLIB):

https://github.com/rust9x/rust9x-sample/blob/main/.cargo/con...

With older msvcrt libraries you only need to link `libcmt.lib`/`msvcrt.lib`, that's it. Visual C++ 4.0 is apparently the last version to support Win32s, so if you can make it link to its libraries you might have a chance!