当我想安装gcc 4.6.4（现在是gcc 4.4.7）
时/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
compilation terminated.
make[5]: *** [_muldi3.o] error 1
make[5]: Leaving directory `/home/chestnuts/objdir/x86_64-unknown-linux-gnu/32/libgcc'
make[4]: *** [multi-do] error 1
make[4]: Leaving directory `/home/chestnuts/objdir/x86_64-unknown-linux-gnu/libgcc'
make[3]: *** [all-multi] error 2
make[3]: Leaving directory `/home/chestnuts/objdir/x86_64-unknown-linux-gnu/libgcc'
make[2]: *** [all-stage1-target-libgcc] error 2
make[2]: Leaving directory `/home/chestnuts/objdir'
make[1]: *** [stage1-bubble]error 2
make[1]: Leaving directory `/home/chestnuts/objdir'
我的步骤：
./contrib/download_prerequisites
cd ..
mkdir obj && cd obj
../gcc-4.7.4/configure
make && make install