error occur when reboot and continue to install

hgneng

I was trying to install LFS 5.0
I did all the thing as the book. Everything goes well.
But when I reboot my computer and continue to install error occur.

I am on the stage of re-installation of binutils
when I `make`, it show me errors as follow.

libtool: link: cannot determine absolute directory name of
`../libiberty/pic'
make[3]: *** [libbfd.la] Error 1
make[3]: Leaving directory `/mnt/lfs/sources/binutils-build/bfd'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/mnt/lfs/sources/binutils-build/bfd'
make[1]: *** [all-recursive-am] Error 2
make[1]: Leaving directory `/mnt/lfs/sources/binutils-build/bfd'
make: *** [all-bfd] Error 2

I think it should be problems about some environment parameters because I
reboot the computer. I don't know how to deal with. Can anybody tell me?
Thanks