LFS第八天-gcc安装

        目的：解决问题

configure:2396: $? = 1
    configure:2415: /mnt/lfs/sources/gcc-build/./gcc/xgcc -B/mnt/lfs/sources/gcc-build/./gcc/ -B/tools/i686-lfs-linux-gnu/bin/ -B/tools/i686-lfs-linux-gnu/lib/ -isystem /tools/i686-lfs-linux-gnu/include -isystem /tools/i686-lfs-linux-gnu/sys-include -o conftest -g -O2 conftest.c >&5
    /mnt/lfs/sources/gcc-build/./gcc/cc1: error while loading shared libraries: libmpfr.so.1: cannot open shared object file: No such file or directory

        昨天问题，没有精确定位，就会对事物认识不够，问题应该是./gcc/cc1报出来的，那应该找cc1的问题。

readelf -a cc1 | grep interpreter

Requesting program interpreter: /lib/ld-linux.so.2

        如果使用改链接器就，必须改变ld-linux.so.2的搜寻路径：

export LD_LIBRARY_PATH=/tools/lib

         将gcc-build目录当中的文件全部删除，再次运行configure,make,可成功编译，解决运行make install.