``

yum install centos-release-scl

# 备份
mv /etc/yum.repos.d/CentOS-SCLo-scl.repo  /etc/yum.repos.d/CentOS-SCLo-scl.repo.bak
# 写入阿里源
vim /etc/yum.repos.d/CentOS-SCLo-scl.repo

[centos-sclo-sclo]
name=CentOS-7 - SCLo sclo
baseurl=https://mirrors.aliyun.com/centos/7/sclo/x86_64/sclo/
# mirrorlist=http://mirrorlist.centos.org?arch=$basearch&release=7&repo=sclo-sclo
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SC

# 备份
mv /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo  /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo.bak
# 写入阿里源
vim /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo

[centos-sclo-rh]
name=CentOS-7 - SCLo rh
baseurl=https://mirrors.aliyun.com/centos/7/sclo/x86_64/rh/
# mirrorlist=http://mirrorlist.centos.org?arch=$basearch&release=7&repo=sclo-rh
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo

yum clean all

yum install devtoolset-8

scl enable devtoolset-8 bash

``````

gcc --version

``

INFO