gnustep-base, compiled with USE=gcc-libffi on amd64, don't work. Need to mask this USE var. But compiled with ffcall library it work fine.
Wow, what a wealth of info... Could you tell us what "don't work" means?
Don't work is don't work. :-) Any gnustep application don't start and core dumps. Try, svp. See, z.B. http://lists.gnu.org/archive/html/discuss-gnustep/2005-10/msg00003.html