完全按照《手把手教你如何建立自己的Linux系统（LFS速成手册）》上所做，在构建临时编译环境时，即第一次编译Binutils-2.17， 
已经CC="gcc -B/usr/bin/" ../binutils-2.17/configure --prefix=/tools --disable-nls --disable-werror 

但make时无法通过 

make install也是Nothing to be done for "install" 

make后结果如下 
make[4] : Leaving directory '/mnt/lfs/sources/binutils-build/ld' 
make[3] : Leaving directory '/mnt/lfs/sources/binutils-build/ld' 
make[2] : Leaving directory '/mnt/lfs/sources/binutols-build/ld' 
make[1] : Noting to be done for 'all-target'. 
make[1] : Leaving directory 'mnt/lfs/sources/binutils-build'