As a small step towards a project I'm still planning, I have successfully compiled EFB-GT on Linux (Ubuntu 16.04) after a couple small tweaks. It's not really useful, but I'm gonna drop the binary here just in case somebody's interested (and update if more comes out of this). A cursory look over the website and google-translating the code comments doesn't yield any licensing whatsoever, so if anyone knows what the license is please let me know.