使用devtools升级安装的时候，由于此库已经停止更新 了，因此需要切换阿里源
SCL+Devtoolset 安装与使用笔记-腾讯云开发者社区-腾讯云 (tencent.com)
https://cloud.tencent.com/developer/article/1889181
1 yum 安装
yum install centos-release-scl centos-release-scl-rh
2 换源CentOS-SCLo-scl-rh
打开 CentOS-SCLo-scl-rh.repo
CentOS-SCLo-rh.repo
Please see http://wiki.centos.org/SpecialInterestGroup/SCLo for more
information
centos-sclo-rh
name=CentOS-7 - SCLo rh
#baseurl=http://mirror.centos.org/centos/7/sclo/$basearch/rh/
mirrorlist=http://mirrorlist.centos.org?arch=$basearch\&release=7\&repo=sclo-rh
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
centos-sclo-rh-testing
name=CentOS-7 - SCLo rh Testing
baseurl=http://buildlogs.centos.org/centos/7/sclo/$basearch/rh/
gpgcheck=0
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
centos-sclo-rh-source
name=CentOS-7 - SCLo rh Sources
baseurl=http://vault.centos.org/centos/7/sclo/Source/rh/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
centos-sclo-rh-debuginfo
name=CentOS-7 - SCLo rh Debuginfo
baseurl=http://debuginfo.centos.org/centos/7/sclo/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
2 换源CentOS-SCLo-scl
SCL+Devtoolset 安装与使用笔记-腾讯云开发者社区-腾讯云 (tencent.com)https://cloud.tencent.com/developer/article/1889181
CentOS-SCLo-sclo.repo # # Please see http://wiki.centos.org/SpecialInterestGroup/SCLo for more # information centos-sclo-sclo name=CentOS-6 - SCLo sclo #baseurl=http://vault.centos.org/centos/6/sclo/$basearch/sclo/ baseurl=https://mirrors.aliyun.com/centos-vault/6.9/sclo/x86_64/sclo/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo centos-sclo-sclo-testing name=CentOS-6 - SCLo sclo Testing baseurl=http://buildlogs.centos.org/centos/6/sclo/$basearch/sclo/ gpgcheck=0 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo centos-sclo-sclo-source name=CentOS-6 - SCLo sclo Sources baseurl=http://vault.centos.org/centos/6/sclo/Source/sclo/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo centos-sclo-sclo-debuginfo name=CentOS-6 - SCLo sclo Debuginfo baseurl=http://debuginfo.centos.org/centos/6/sclo/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
需要将所有的6全局替换为6
3 使能bash
source /opt/rh/devtoolset-11/enable