Probléme avec LFS 6.6

bon jour
j'utilise le livre LFS 6.6 au 5eme chapitre lors de la compilation de gcc a la fin de la compilation il m'affiche le message d'éreure suivant:"
make[2]: Entering directory '/mnt/lfs/sources/gcc-4.4.3/i686-lfs-linux-gnu/libgcc'
Makefile:143: ../.././gcc/libgcc.mvars: No such file or directory
make[2]: *** No rule to make target '../.././gcc/libgcc.mvars'. Stop.
make[2]: Leaving directory '/mnt/lfs/sources/gcc-4.4.3/i686-lfs-linux-gnu/libgcc'
make[1]: *** [all-target-libgcc] Error 2
make[1]: Leaving directory '/mnt/lfs/sources/gcc-4.4.3'
make: *** [all] Error 2"
et lors de exécution de la commende "make install" il m'affiche un autre message son contenu est
" make[1]: Entering directory '/mnt/lfs/sources/gcc-4.4.3'
/bin/sh ./mkinstalldirs /tools /tools
make[2]: Entering directory '/mnt/lfs/sources/gcc-4.4.3/host-i686-pc-linux-gnu/fixincludes'
rm -rf /tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools
rm: cannot remove '/tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/mkheaders': Permission denied
rm: cannot remove '/tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/fixincl': Permission denied
rm: cannot remove '/tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/fixinc.sh': Permission denied
rm: cannot remove '/tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/mkinstalldirs': Permission denied
make[2]: [install] Error 1 (ignored)
/bin/sh ../.././fixincludes/../mkinstalldirs /tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools
/bin/sh ../.././fixincludes/../mkinstalldirs /tools/lib/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/include
/usr/bin/install -c -m 644 ../.././fixincludes/README-fixinc \
/tools/lib/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/include/README
/usr/bin/install -c fixinc.sh /tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/fixinc.sh
/usr/bin/install: cannot remove '/tools/libexec/gcc/i686-lfs-linux-gnu/4.4.3/install-tools/fixinc.sh': Permission denied
make[2]: *** [install] Error 1
make[2]: Leaving directory '/mnt/lfs/sources/gcc-4.4.3/host-i686-pc-linux-gnu/fixincludes'
make[1]: *** [install-fixincludes] Error 2
make[1]: Leaving directory '/mnt/lfs/sources/gcc-4.4.3'
make: *** [install] Error 2"
c'est quoi le problème ?
merci d'avance pour votre aide