centos安装

1.准备工作

yum install wget 
yum install make
yum -y install bzip2
yum install m4
yum install gcc gcc-c++ glibc-static -y  //安装旧的gcc相关的编译工具

2.下载gcc 4.8.2源代码

wget http://gcc.gnu.org/pub/gcc/releases/gcc-4.8.2/gcc-4.8.2.tar.bz2

3.解压缩源代码包，进入gcc-4.8.2目录，执行./contrib/download_prerequisities脚本会自动下载三个依赖库别为gmp-4.3.2、mpfr-2.4.2、mpc-0.8.1

4.安装gmp,mpfr,mpc

cd gmp  
mkdir build  
cd build  
../configure --prefix=/usr/local/gcc/gmp-4.3.2  
make && make install 

cd ../../mpfr  
mkdir build  
cd build  
../configure --prefix=/usr/local/gcc/mpfr-2.4.2 --with-gmp=/usr/local/gcc/gmp-4.3.2 
make && make install  

cd ../../mpc  
mkdir build  
cd build  
../configure --prefix=/usr/local/gcc/mpc-0.8.1 --with-mpfr=/usr/local/gcc/mpfr-2.4.2 --with-gmp=/usr/local/gcc/gmp-4.3.2
make && make install