buildroot to build toolchain on Linux

Hello all,

i tried to follow the howto step by step, but when compiling the kernel I get following errors:

$ make ARCH=nios2nommu CROSS_COMPILE=nios2-linux-uclibc- zImage
  CHK     include/linux/version.h
  CHK     include/nios2_system.h
perl -I/home/jack/linux-2.6.x/arch/nios2nommu/scripts /home/jack/linux-2.6.x/arch/nios2nommu/scripts/gen_nios2_system.h.pl cpu sdram ext_flash < ../standard_1c12.ptf > include/nios2_system.h.tmp; if  && cmp -s include/nios2_system.h include/nios2_system.h.tmp; then rm -f include/nios2_system.h.tmp; else echo &#39;  UPD     include/nios2_system.h&#39;; mv -f include/nios2_system.h.tmp include/nios2_system.h; fi
make: `arch/nios2nommu/kernel/asm-offsets.s&#39; is up to date.
  CHK     include/linux/compile.h
  CHK     usr/initramfs_list
arch/nios2nommu/boot/Makefile:29: warning: overriding commands for target `arch/nios2nommu/boot/zImage&#39;
arch/nios2nommu/boot/Makefile:12: warning: ignoring old commands for target `arch/nios2nommu/boot/zImage&#39;
arch/nios2nommu/boot/Makefile:33: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/Makefile:16: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/Makefile:46: warning: overriding commands for target `arch/nios2nommu/boot/zImage&#39;
arch/nios2nommu/boot/Makefile:29: warning: ignoring old commands for target `arch/nios2nommu/boot/zImage&#39;
arch/nios2nommu/boot/Makefile:50: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/Makefile:33: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/compressed/Makefile:58: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/compressed/Makefile:22: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/compressed/Makefile:62: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin&#39;
arch/nios2nommu/boot/compressed/Makefile:26: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin&#39;
arch/nios2nommu/boot/compressed/Makefile:65: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin.gz&#39;
arch/nios2nommu/boot/compressed/Makefile:29: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin.gz&#39;
arch/nios2nommu/boot/compressed/Makefile:72: warning: overriding commands for target `arch/nios2nommu/boot/compressed/piggy.o&#39;
arch/nios2nommu/boot/compressed/Makefile:36: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/piggy.o&#39;
arch/nios2nommu/boot/compressed/Makefile:94: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/compressed/Makefile:58: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux&#39;
arch/nios2nommu/boot/compressed/Makefile:98: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin&#39;
arch/nios2nommu/boot/compressed/Makefile:62: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin&#39;
arch/nios2nommu/boot/compressed/Makefile:101: warning: overriding commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin.gz&#39;
arch/nios2nommu/boot/compressed/Makefile:65: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/vmlinux.bin.gz&#39;
arch/nios2nommu/boot/compressed/Makefile:108: warning: overriding commands for target `arch/nios2nommu/boot/compressed/piggy.o&#39;
arch/nios2nommu/boot/compressed/Makefile:72: warning: ignoring old commands for target `arch/nios2nommu/boot/compressed/piggy.o&#39;
  AS      arch/nios2nommu/boot/compressed/head.o
arch/nios2nommu/boot/compressed/head.S: Assembler messages:
arch/nios2nommu/boot/compressed/head.S:111: Error: symbol `_start&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:117: Error: symbol `text_init&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:126: Error: symbol `data_init&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:146: Error: symbol `flush_cache&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:151: Error: symbol `data_flush&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:158: Error: symbol `text_flush&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:169: Error: symbol `fake_headers_as_bzImage&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:202: Error: symbol `_start&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:208: Error: symbol `text_init&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:217: Error: symbol `data_init&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:237: Error: symbol `flush_cache&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:242: Error: symbol `data_flush&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:249: Error: symbol `text_flush&#39; is already defined
arch/nios2nommu/boot/compressed/head.S:260: Error: symbol `fake_headers_as_bzImage&#39; is already defined
make: ***  Error 1
make: ***  Error 2
make: ***  Error 2

anyone any idea what's going wrong?

btw, hippo, thanks for the great work.