error in building gcc 2.95.3

error in building gcc 2.95.3

[Rongjun Lu]

Dear Sir:
After failing to compile gcc3.4.0,I chang to gcc2.95.3 with binutils 2.10.1.
Building binutils is successful, and the gcc is almost successful.The error is as following, but I don't know where is "asm/unistd.h"is from. How to resovle it? Thanks.

configure gcc as:
../gcc-2.95.3/config --target=arm-linux --prefix=/home/lurj/board_tms5471/tools --without-headers --with-newlib --enable-languages=c

error:
---------------------------------------------
............
rm -f tmplibgcc1.a libgcc1.S
cp ../../gcc-2.95.3/gcc/config/arm/lib1funcs.asm libgcc1.S
for name in _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx; \
do \
  echo ${name}; \
  /home/lurj/board_tms5471/build-tools/build-gcc/gcc/xgcc -B/home/lurj/board_tms5471/build-tools/build-gcc/gcc/ -B/home/lurj/board_tms5471/tools/arm-linux/bin/ -I/home/lurj/board_tms5471/tools/arm-linux/include -O2  -DCROSS_COMPILE -DIN_GCC     -g -O2 -I./include  -fomit-frame-pointer -fPIC -Dinhibit_libc -D__gthr_posix_h -g0 -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc  -I. -I../../gcc-2.95.3/gcc -I../../gcc-2.95.3/gcc/config -I../../gcc-2.95.3/gcc/../include -c -DL${name} libgcc1.S; \
  if [ $? -eq 0 ] ; then true; else exit 1; fi; \
  mv libgcc1.o ${name}.o; \
  arm-linux-ar rc tmplibgcc1.a ${name}.o; \
  rm -f ${name}.o; \
done
_udivsi3
_divsi3
_umodsi3
_modsi3
_dvmd_lnx
libgcc1.S:438: asm/unistd.h: No such file or directory
make[1]: *** [libgcc1-asm.a] Error 1
make[1]: Leaving directory `/home/lurj/board_tms5471/build-tools/build-gcc/gcc'
make: *** [all-gcc] Error 2

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