some compile problem about gcc-2.95.3

[zouqiong]

i download the release version of gcc-2.95.3, and binutils 2.15, then i
did the following things:
1.
mkdir binutils-build;

../../binutils-2.15/configure --prefix=/opt/gcc --target=mipsel-linux
-v;

make;make install;

2.i copy the o32 lib, o32 include to the /opt/gcc/mipsel-linux/lib,
/opt/gcc/mipsel-linux/include,

3.
mkdir gcc-build;
 
../../gcc-2.95.3/configure --prefix=/opt/gcc --target=mipsel-linux
--enable-languages=c --disable-checking -enable-shared -v;
 
 make;

 then errors go like this:
for name in _muldi3 _divdi3 _moddi3 _udivdi3 _umoddi3 _negdi2 _lshrdi3
_ashldi3 _ashrdi3 _ffsdi2 _udiv_w_sdiv _udivmoddi4 _cmpdi2 _ucmpdi2
_floatdidf _floatdisf _fixunsdfsi _fixunssfsi _fixunsdfdi _fixdfdi
_fixunssfdi _fixsfdi _fixxfdi _fixunsxfdi _floatdixf _fixunsxfsi
_fixtfdi _fixunstfdi _floatditf __gcc_bcmp _varargs __dummy _eprintf _bb
_shtab _clear_cache _trampoline __main _exit _ctors _pure; \
do \
  echo ${name}; \
 
/home/mytask/mywork/WHAT_I_HAVE_DONE/mycompile/gcc-2.95.3-build/gcc/gcc/xgcc 
-B/home/mytask/mywork/WHAT_I_HAVE_DONE/mycompile/gcc-2.95.3-build/gcc/gcc/ 
-B=/opt/gcc-2.95//mipsel-linux/bin/ -I=/opt/gcc-2.95//mipsel-linux/include  
-DCROSS_COMPILE -DIN_GCC      -I./include     -DIN_LIBGCC2 
-D__GCC_FLOAT_NOT_NEEDED -I/usr/include   -I. -I../../../gcc-2.95.3/gcc 
-I../../../gcc-2.95.3/gcc/config -I../../../gcc-2.95.3/gcc/../include -c 
-DL${name} \
       ../../../gcc-2.95.3/gcc/libgcc2.c -o ${name}.o; \
  if [ $? -eq 0 ] ; then true; else exit 1; fi; \
  mipsel-linux-ar rc tmplibgcc2.a ${name}.o; \
  rm -f ${name}.o; \
done
_muldi3
as: unrecognized option `-O2'
make[1]: *** [libgcc2.a] Error 1
make[1]: Leaving directory
`/home/mytask/mywork/WHAT_I_HAVE_DONE/mycompile/gcc-2.95.3-build/gcc/gcc'
make: *** [all-gcc] Error 2

i am surprised about it.