lfs:/mnt/lfs/sources/gcc-build$ ../gcc-3.4.3/configure --prefix=/tools \
>     --libexecdir=/tools/lib --with-local-prefix=/tools \
>     --disable-nls --enable-shared --enable-languages=c
loading cache ./config.cache
checking host system type... i686-pc-linux-gnu
checking target system type... i686-pc-linux-gnu
checking build system type... i686-pc-linux-gnu
checking for a BSD compatible install... /bin/install -c
*** This configuration is not supported in the following subdirectories:
     target-libstdc++-v3 target-libf2c target-libffi target-boehm-gc target-zlib target-libjava zlib fastjar target-libobjc
    (Any other directories should still work fine.)
/tools/bin/ld: unrecognized option '--hash-style=both'
/tools/bin/ld: use the --help option for usage information
collect2: ld returned 1 exit status
*** The command '/usr/bin/gcc -o conftest -g -O2   conftest.c' failed.
*** You must set the environment variable CC to a working compiler.