Make romfs, errors????????

Hi all.

when i make command(build kernel binarytoolchain with board 1c12 on linux): make romfs

===>some results:

er@localhost uClinux-dist]$ make romfs

...............

echo "Altera/nios2nommu Version 3.2.0 -- " `date` > /home/user/uClinux-dist/romfs/etc/version

make[2]: Leaving directory `/home/user/uClinux-dist/vendors/Altera/nios2nommu'

make[1]: Leaving directory `/home/user/uClinux-dist/vendors'

make[1]: Entering directory `/home/user/uClinux-dist/include'

make[1]: Nothing to be done for `romfs'.

make[1]: Leaving directory `/home/user/uClinux-dist/include'

make[1]: Entering directory `/home/user/uClinux-dist/lib'

................

/bin/sh: nios2-elf-gcc: command not found

/bin/sh: nios2-elf-gcc: command not found

/bin/sh: nios2-elf-gcc: command not found

make[2]: Entering directory `/home/user/uClinux-dist/uClibc'

[ -e /home/user/uClinux-dist/romfs/lib ] || mkdir /home/user/uClinux-dist/romfs/lib

/bin/sh: nios2-elf-gcc: command not found

if [ "" ]; then

romfs-inst.sh /lib/lib.so;

make[2]: Entering directory `/home/user/uClinux-dist/user/boa'

for i in src ; do make -C $i romfs || exit ; done

make[3]: Entering directory `/home/user/uClinux-dist/user/boa/src'

romfs-inst.sh /bin/boa

cp: cannot stat `boa': No such file or directory

make[3]: *** [romfs] Error 1

make[3]: Leaving directory `/home/user/uClinux-dist/user/boa/src'

make[2]: *** [romfs] Error 2

make[2]: Leaving directory `/home/user/uClinux-dist/user/boa'

make[1]: *** [romfs] Error 2

make[1]: Leaving directory `/home/user/uClinux-dist/user'

make: *** [romfs.subdirs] Error 1

===========================

- why command nios2-elf-gcc not found.

- file "init" created in directory romfs has problem:

I open file "init", it warns errors:"/bin/init" does not exist.

pls help me!!!!!!!!!!!!!!

thanks