How to install GCC 4.3.3 on SGI IRIX 6.5

I'd like to install GCC 4.3.3 on a SGI IRIX 6.5 box.

First, I got compiled GCC 3.2.2 from the SGI freeware homepage, and installed it.

Then, I configured GCC 4.3.3 with following options
../gcc-4.3.3/configure --prefix=/usr/local/gcc43 \
--with-mpfr=/usr/local/mpfr-n32 \
--with-gmp=/usr/local/gmp-n32 \
--enable-languages=c,c++,fortran \
--enable-multilib \
--enable-shared \
--enable-threads=posix \
--enable-libgcj \
--disable-nls \
--with-pkgversion=AutoBuild \
--enable-checking=release \
--with-gnu-as --with-as=/usr/local/binutils/bin/as \
--with-gnu-ld --with-ld=/usr/local/binutils/bin/ld

After that,  I issued the command "gmake bootstrap" to compile it.

It spends 10 minutes or so compiling, then bombs out with:

gcc -c   -g -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute    -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I..
/../gcc-4.3.3/gcc -I../../gcc-4.3.3/gcc/build -I../../gcc-4.3.3/gcc/../include -I../../gcc-4.3.3/gcc/../libcpp/include -I/usr/local/gmp-n32/include -I/usr/local/mpfr-n3
2/include -I../../gcc-4.3.3/gcc/../libdecnumber -I../../gcc-4.3.3/gcc/../libdecnumber/dpd -I../libdecnumber    -o build/fix-header.o ../../gcc-4.3.3/gcc/fix-header.c
gcc -c   -g -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute    -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I..
/../gcc-4.3.3/gcc -I../../gcc-4.3.3/gcc/build -I../../gcc-4.3.3/gcc/../include -I../../gcc-4.3.3/gcc/../libcpp/include -I/usr/local/gmp-n32/include -I/usr/local/mpfr-n3
2/include -I../../gcc-4.3.3/gcc/../libdecnumber -I../../gcc-4.3.3/gcc/../libdecnumber/dpd -I../libdecnumber    -o build/scan-decls.o ../../gcc-4.3.3/gcc/scan-decls.c
gcc   -g -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute    -DHAVE_CONFIG_H -DGENERATOR_FILE  -o build/fix-heade
r \
 build/fix-header.o c-incpath.o cppdefault.o build/scan-decls.o prefix.o \
 build/scan.o build/errors.o ../libcpp/libcpp.a   ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a
ld32: WARNING 84 : ../libdecnumber/libdecnumber.a is not used for resolving any symbol.
if [ -f fixhdr.ready ] ; then \
        true; \
else \
        echo timestamp > fixhdr.ready; \
fi
set -e; for ml in `cat fixinc_list`; do \
  sysroot_headers_suffix=`echo ${ml} | sed -e 's/;.*$//'`; \
  multi_dir=`echo ${ml} | sed -e 's/^[^;]*;//'`; \
  fix_dir=include-fixed${multi_dir}; \
  if [ -f ${fix_dir}/fixed ] ; then true; \
  else \
    : This line works around a 'make' bug in BSDI 1.1.; \
    FIXPROTO_DEFINES="-D__EXTENSIONS__ -D_SGI_SOURCE -D_LANGUAGE_C_PLUS_PLUS"; export FIXPROTO_DEFINES; \
    FIX_HEADER="build/fix-header"; export FIX_HEADER; \
    mkinstalldirs="/bin/sh ../../gcc-4.3.3/gcc/../mkinstalldirs"; \
      export mkinstalldirs; \
    if [ -d "`echo /usr/include | sed -e :a -e 's,[^/]*/\.\.\/,,' -e ta`" ]; then \
      /bin/sh ../../gcc-4.3.3/gcc/fixproto ${fix_dir} ${fix_dir} `echo /usr/include | sed -e :a -e 's,[^/]*/\.\.\/,,' -e ta`; \
      if [ $? -eq 0 ] ; then true ; else exit 1 ; fi ; \
    else true; fi; \
    echo timestamp > ${fix_dir}/fixed; \
  fi; \
done
fixproto: populating `include-fixed'
Internal error:  No prototype for clearerr
Internal error:  No prototype for fclose
Internal error:  No prototype for feof
Internal error:  No prototype for ferror
Internal error:  No prototype for fflush
Internal error:  No prototype for fgetc
...........
...........
checking for mips-sgi-irix6.5-gcc... /home/root/gcc-build/./gcc/xgcc -B/home/root/gcc-build/./gcc/ -B/usr/local/gcc43/mips-sgi-irix6.5/bin/ -B/usr/local/gcc43/mips-sgi-
irix6.5/lib/ -isystem /usr/local/gcc43/mips-sgi-irix6.5/include -isystem /usr/local/gcc43/mips-sgi-irix6.5/sys-include
checking for suffix of object files... configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
gmake[2]: *** [configure-stage1-target-libgcc] Error 1
gmake[2]: Leaving directory `/home/root/gcc-build'
gmake[1]: *** [stage1-bubble] Error 2
gmake[1]: Leaving directory `/home/root/gcc-build'
gmake: *** [bootstrap] Error 2

So I am not sure what to do.   Any suggestions are appreciated.

Thanks