"eric lin" <ericlin@xxxxxxxxxxxxx> writes: This is your problem: > /home/eric/disk/gcc-4.5.2/host-i686-pc-linux-gnu/gcc/cc1: error while loading shared libraries: libmpc.so.2: cannot open shared object file: No such file or directory To quote the FAQ you already looked at: required libraries for the GCC build are missing, specifically MPFR, GMP and MPC. If installed as shared libraries they must be in the runtime linker's search path so they can be found. Ian