There are 2 repositories under arm-windows topic.
MXE (M cross environment) (For ARM32 Windows development)
GLib with fixes for ARM32 Windows (LLVM-MinGW)
libsamplerate with fix(es) for ARMv7 (and Aarch64) LLVM-MinGW/MXE
libffi fixed for ARM32 WoA (LLVM-MinGW)
Pixman: The pixel-manipulation library for X and cairo. (With fixes for ARMv7-Windows)
fixes for ARM32 Windows for SDL2_mixer (LLVM-MinGW)