https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108678
--- Comment #19 from Evgeny Karpov <Evgeny.Karpov at microsoft dot com> --- Thank you for your interest in aarch64-w64-mingw32. Cross-compilation from the x86_64-pc-msys host to the aarch64-w64-mingw32 target is already available. Work on a native toolchain is in progress. More information here: https://github.com/Windows-on-ARM-Experiments/msys2-woarm64-build