I use WSL with mingw-w64 to cross compile things for native Windows sometimes... e.g. I keep my own builds of ffmpeg and mpv around, as well as some of my own "legacy" tools that I use both on linux and windows natively.

And in this space, it's often a lot easier to get something autotools-based to build than something cmake or meson, at least in my experience. With autotools more often than not all I need to do is to specify the right target hosttriple and be done. With cmake and meson, it's often a fight to figure out how to cross-compile something like that.

This approach of cross-compiling for windows with mingw-w64, sometimes on "proper" linux, sometimes on WSL2, sometimes even on cygwin, seems to be still somewhat common in C/C++ land and in open source in particular, especially for projects that pull in a fair amount of dependencies (such as the aforementioned ffmpeg) - you will find a lot of Windows build guides that say only mingw cross-compilation from linux is supported and tested.