I did the port above, happy someone built a windows binary as I only run Linux myself.
would your fork compile on arch linux raspberry pi ?
I created gridseed aur packages for cgminer and cpuminer, if you run arch linux.
https://aur.archlinux.org/packages/?K=gridseedThey work on the raspberry pi (just tested).
Just modified the existing aur packages to use the gridseed git versions.
Contact me for feedback or any issues.