通过yum安装gcc4.8.1详细步骤：   配置yum源 # vim /etc/yum.repos.d/devtools-2.repo [testing-devtools-2-centos-$releasever] name=testing 2 devtools for CentOS $releasever # baseurl=https://puias.princeton.edu/data/puias/DevToolset/$releasever/$basearch/ baseurl=https://people.centos.org/tru/devtools-2/$relea……