I managed to compile the fsv ebuild on macos so I assume it works there, and on ppc. I got all the libraries from fink since glib ebuild seems broken on macos. But that should not be a problem on ppc.
gtkglarea would also work if bug 58848 was fixed
Bug seems fixed, we have a solution for glib in the works. fsv will be keyworded once all of its deps are ok
I can now build glib, gtk, gtkglarea, fsv. There is only a minor glitch with XML-Parser
Try it in prefix, if you want it