I followed very carfully the instructions given in the book version 6.3 and i'm sure, i done all of them perfectualy, i tried many times to fix this problem but no results, the screen show me the same thing, please, if u have an unswer i will be glad...
thanks...

this is the error (in last 4 lines):

//////////////////////////////////////////////////////////////////////////

checking whether NLS is requested... no
checking what assembler to use... /tools/bin/as
checking what linker to use... /tools/x86_64-unknown-linux-gnu/bin/ld
checking what nm to use... /tools/bin/nm
checking what objdump to use... /tools/x86_64-unknown-linux-gnu/bin/objdump
checking assembler for .balign and .p2align... yes
checking assembler for .p2align with maximum skip... yes
checking assembler for working .subsection -1... yes
checking assembler for .weak... yes
checking assembler for .weakref... yes
checking assembler for .nsubspa comdat... no
checking assembler for .hidden... yes
checking linker for .hidden support... yes
checking assembler for .sleb128 and .uleb128... yes
checking assembler for eh_frame optimization... yes
checking assembler for section merging support... yes
checking assembler for COMDAT group support... yes
checking assembler for thread-local storage support... yes
checking linker -Bstatic/-Bdynamic option... yes
checking assembler for filds and fists mnemonics... yes
checking assembler for cmov syntax... no
checking assembler for GOTOFF in data... no
checking assembler for dwarf2 debug_line support... yes
checking assembler for buggy dwarf2 .file directive... no
checking assembler for --gdwarf2 option... yes
checking assembler for --gstabs option... yes
checking linker read-only and read-write section mixing... read-write
checking linker PT_GNU_EH_FRAME support... yes
checking linker position independent executable support... yes
checking linker --as-needed support... yes
checking linker --sysroot support... yes
checking __stack_chk_fail in target GNU C library... yes
Using ggc-page for garbage collection.
checking whether to enable maintainer-specific portions of Makefiles... no
Links are now set up to build a native compiler for x86_64-unknown-linux-gnu.
updating cache ./config.cache
configure: creating ./config.status
config.status: creating Makefile
config.status: creating gccbug
config.status: creating mklibgcc
config.status: creating libada-mk
config.status: creating auto-host.h
config.status: executing default commands
Bootstrapping the compiler
make[1]: Entering directory `/home/lfs/gcc-build/gcc-4.1.2/gcc'
make[1]: *** No rule to make target `bootstrap'. Stop.
make[1]: Leaving directory `/home/lfs/gcc-build/gcc-4.1.2/gcc'
make: *** [bootstrap] Error 2
lfs:~/gcc-build/gcc-4.1.2$

Welcome to LQ
Sorry, this is wrong.

To build gcc-4.1.2 in /home/lfs/, you need two directories
in /home/lfs/

So we start from the very beginning :

1) cd /home/lfs/
1a) delete all gcc-4.1.2/, all gcc-build/
2) tar xvf gcc-4.1.2.tar.gz
3) mkdir gcc-build
Now you have the 2 directories, gcc-build/ , gcc-4.1.2/.
4) cd gcc-build
and in this empty directory outside gcc-4.1.2/ everything takes place.

A similar procedure is meant for binutils, so better do binutils again,
if it wasn't build correctly.
... And : binutils is to be rebuild before gcc ...
....

thanks!! it works ) but I had some other problems which need to update some packages listed in INSTALL file inside glibc-2.5.1 in order to fix them, by the way, I did not use the same glibc given in the livecd but an other one from "GNU" web site, the first one show me some errors but the last one=> every think is ok!! thank god!!