gcc   -g -O2 -DIN_GCC -DCROSS_COMPILE  -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros -Wold-style-definition    -DHAVE_CONFIG_H -I. -I. -I../../gcc-4.0.3/gcc -I../../gcc-4.0.3/gcc/. -I../../gcc-4.0.3/gcc/../include -I../../gcc-4.0.3/gcc/../libcpp/include     -c insn-output.c \
          -o insn-output.o
/tmp/ccMYPSAk.s: Assembler messages:
/tmp/ccMYPSAk.s:31019: Error: unknown pseudo-op: `.byt'
make[1]: *** [insn-output.o] Error 1
make[1]: Leaving directory `/root/build-rbdev/build-gcc/gcc'
make: *** [install-gcc] Error 2
done

Make your PATH include :/usr/local/arm-elf/bin