Hi to everybody.
when I launch "make install", I have this error
make: Entering directory `/sources/glibc-2.3.6/manual'
LANGUAGE=C LC_ALL=C makeinfo libc.texinfo
libc.texinfo:117: Node `Top' previously defined at line 107.
makeinfo: Removing output file `/sources/glibc-2.3.6/manual/libc.info' due to errors; use --force to preserve.
make: *** [libc.info] Error 1
make: Leaving directory `/sources/glibc-2.3.6/manual'
make: *** [manual/subdir_install] Error 2
make: Leaving directory `/sources/glibc-2.3.6'
make: *** [install] Error 2
It's been a while since I've played around with LFS so I can't help you directly on this one but sometimes an error occurs because of a little mistake you've made with some other step previously, but not necessarily.
In any case, I'd recommend you visit irc.linuxfromscratch.org, there are guys chatting there who can help you directly. Make sure to paste your error in a pastebin however.