Your other post says GCC-4.5.1 ( Which is BOOK 6.7 )
1) The command, you show, doesn't look like BOOK 6.7 .
LFS version and book version must be the the same.
2) When you have done 'gcc pass 1', chapter 5.5.1 , the next item is not gcc.
The next item is then chapter 5.6 .