CentOS 7安装GCC 9.2.0

0.下载好gcc-9.2.0.tar.gz
1.yum -y groupinstall "development tools"
2.解压gcc-9.2.0
tar -xf gcc-9.2.0.tar.gz
3.进入到gcc-9.2.0文件夹
cd gcc-9.2.0
4.下载依赖
./contrib/download_prerequisites
5.创建build文件夹
mkdir build
6.进入build文件夹
cd build
7.设置
../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib --prefix=/usr/local
8.编译
make
9.安装
make install