dev-util/
mingw64-toolchain

All-in-one mingw64 toolchain intended for building Wine without crossdev

https://www.mingw-w64.org/

There are no pull requests

You think something is missing here?
Start with filling a new pull requests.

If you also like to help the Gentoo project, you can consider sending a Pull Request via GitHub.
Before doing so, you might want to take a look at the wiki page.