Debian 9 安装gcc-4.8:
注: 1、Debian 9默认安装的gcc版本为6 2、没有Debian 9对应的gcc 4.8的源,继续使用Debian 8的源
vi /etc/apt/sources.list
deb http://ftp.us.debian.org/debian/ jessie main contrib non-free deb-src http://ftp.us.debian.org/debian/ jessie main contrib non-free :wq