Thanks a lot for your help. Maybe someone make a soft link /lib64/libc.so. I'll remove it. GHui ------------------ Original ------------------ From: "Ian Lance Taylor";<iant@xxxxxxxxxx>; Date: Tue, Oct 22, 2013 09:00 PM To: "GHui"<ugiwgh@xxxxxxxxx>; Cc: "gcc-help"<gcc-help@xxxxxxxxxxx>; Subject: Re: Build gcc-4.8.2 error -- gcc-4.8.1/x86_64-unknown-linux-gnu/libgomp On Mon, Oct 21, 2013 at 11:35 PM, GHui <ugiwgh@xxxxxxxxx> wrote: > > -lc (/lib/../lib64/libc.so) /lib64/libc.so is an implausible file on a GNU/Linux system. Why does that file exist? On GNU/Linux there is normally a /usr/lib64/libc.so file, which is actually a text file. There is not normally a /lib64/libc.so file, which in this case is a shared library. Ian