building gnustep gnu-gnu-gnu on macos 10

[Secret Guy]

I've tried numerous versions of gcc and been unable to compile both
libffi and objc. However I have ffcall installed from darwinports and
am trying again.

I am runing macos 10.4.

If I build gcc using gcc-3.3.5 I get an error message that c++-filt is
not found. If I build gcc-4.0.0 source without building libffi, it
creates $GNUSTEP_SYSTEM_ROOT/lib/libobjc-gnu.a and libobjc-gnu.dylib,
there is no libobjc.a. In any case, gnustep-base finds ffcall but
fails while compiling mframe.m with the error:

mframe.m:1711: internal compiler error: in assign_stack_temp_for_type,
at function.c:605

which is a line that looks like:

*(block*)buffer = retframe_block(retframe);

I also tried simply using apple's gcc and gnustep-base complains that
it can't pproduce working binaries.

Can you tell me which gcc source to use to build gnustep, or any
instructions other than what is in READM.Darwin?