下载编译

wget http://mirror.linux-ia64.org/gnu/gcc/releases/gcc-10.1.0/gcc-10.1.0.tar.gztar zxvf gcc-10.1.0.tar.gzcd gcc-10.1.0/mkdir buildcd build/../configure

报错，提示信息configure: error: Building GCC requires GMP 4.2+, MPFR 3.1.0+ and MPC 0.8.0+.

Try the --with-gmp, --with-mpfr and/or --with-mpc options to specifytheir locations. Source code for these libraries can be found attheir respective hosting sites as well as athttps://gcc.gnu.org/pub/gcc/infrastructure/. See alsohttp://gcc.gnu.org/install/prerequisites.html for additional info. Ifyou obtained GMP, MPFR and/or MPC from a vendor distribution package,make sure that you have installed both the libraries and the headerfiles. They may be located in separate packages.

vi ../contrib/download_prerequisites

修改镜像服务器地址

base_url='http://mirror.linux-ia64.org/gnu/gcc/infrastructure/'

接下来下载需要的文件

cd ../

bash contrib/download_prerequisites

可能运行较慢，看不到就着急啊……来，手动下载吧（文件名在contrib/download_prerequisites 里面有）

wget http://mirror.linux-ia64.org/gnu/gcc/infrastructure/gmp-6.1.0.tar.bz2wget http://mirror.linux-ia64.org/gnu/gcc/infrastructure/mpfr-3.1.4.tar.bz2wget http://mirror.linux-ia64.org/gnu/gcc/infrastructure/mpc-1.0.3.tar.gz#wget http://mirror.linux-ia64.org/gnu/gcc/infrastructure/isl-0.18.tar.bz2tar jxvf gmp-6.1.0.tar.bz2tar jxvf mpfr-3.1.4.tar.bz2tar zxvf mpc-1.0.3.tar.gz#tar jxvf isl-0.18.tar.bz2ln -s gmp-6.1.0 gmpln -s mpfr-3.1.4 mpfrln -s mpc-1.0.3 mpc

再次

cd build/

../configure

如果报错configure: error: I suspect your system does not have 32-bit

development libraries (libc and headers). If you have them,

rerun configure with --enable-multilib. If you do not have them,

and want to build a 64-bit-only compiler, rerun configure with

--disable-multilib.

也就是说，configure推断本机没有32位开发库，如果的确有就加上--enable-multilib选项，否则就使用--disable-multilib选项只构建64位版本。

就改为

../configure --disable-multilib

生成Makefile后执行（-j 8代表8个线程）