Compiling gcc 4 on IRIX - libiberty?

[Bisbal, Prentice]

Does anyone out there have any experience building gcc 4 on IRIX64 6.5?
I'm trying to build gcc 4 so that I can use gfortran, but I'm having no
luck. It dies with this message:

gmake[2]: *** No rule to make target `../libiberty/libiberty.a', needed
by `fastjar'.  Stop.


For those of you who are curious here's what I'm doing to get here

bzip2 -dc ~/software/gcc-cvs/gcc-4.1-20050327.tar.bz2 | tar xvfp - 

mkdir objdir

cd objdir

../gcc-4.1-20050327/configure --prefix=/opt/gcc-4.1-20050327 --with-
mfpr=/opt --with-gmp=/opt --with-local-prefix=/opt --with-system-zlib 

gmake

-- 
Prentice