This is an unofficial Arch Linux MinGW-w64 repository. It is based on the mingw-w64 packages in the AUR https://aur.archlinux.org/packages/?K=mingw-w64. To use this repo add the following lines to /etc/pacman.conf
[mingw-w64]
SigLevel = Optional TrustAll
Server = http://downloads.sourceforge.net/project/mingw-w64-archlinux/$arch
Server = http://amr.linuxd.org/archlinux/$repo/os/$arch