buildroot to build toolchain on Linux

hi hippo:

I uesed exec ./build commaand,but i got a erro.

The erro informathion follow:

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strerror.c: In function `strerror':/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strerror.c:663: warning: return discards qualifiers from pointer target type

if [ x"" != x ]; then

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final/gcc/xgcc -B/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final/gcc/ -B/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/bin/ -B/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/lib/ -isystem /home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/include -isystem /home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/sys-include-c -DHAVE_CONFIG_H -g -Os -I. -I/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/../include -W -Wall -Wtraditional -pedantic /home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c -o pic/strsignal.o;

else true; fi

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final/gcc/xgcc -B/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final/gcc/ -B/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/bin/ -B/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/lib/ -isystem /home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/include -isystem /home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/sys-include -c -DHAVE_CONFIG_H -g -Os -I. -I/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/../include -W -Wall -Wtraditional -pedantic /home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c -o strsignal.o

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c:414: error: conflicting types for 's trsignal'

/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/sys-include/string.h:374: error: previous declaration of 'strsignal' was here

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c:414: error: conflicting types for 's trsignal'

/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/sys-include/string.h:374: error: previous declaration of 'strsignal' was here

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c: In function `psignal':/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c:563: error: argument "signo" doesn't match prototype

/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/sys-include/signal.h:141: error: prototype declaration

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c:563: error: argument "message" doesn 't match prototype

/home/alex/buildroot/build_nios2/staging_dir/nios2-linux-uclibc/sys-include/signal.h:141: error: prototype declaration

/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5/libiberty/strsignal.c:568: warning: comparison between sig ned and unsigned

make[2]: *** [strsignal.o] 错误 1

make[2]: Leaving directory `/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final/nios2-linux-uclibc/libiberty'

make[1]: *** [all-target-libiberty] 错误 2

make[1]: Leaving directory `/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final'make: *** [/home/alex/buildroot/toolchain_build_nios2/gcc-3.4.5-final/.compiled] 错误 2[alex@localhost download]$

What can I do? Thank you!