devtoolset-7安装

为了查看此集合中包含的各个组件，包括其他开发工具，可以运行
sudo yum list devtoolset-7*

1. Install a package with repository for your system:

On CentOS, install package centos-release-scl available in CentOS repository:

$ sudo yum install centos-release-scl

On RHEL, enable RHSCL repository for you system:

$ sudo yum-config-manager --enable rhel-server-rhscl-7-rpms

2. Install the collection:

$ sudo yum install devtoolset-7

3. Start using software collections:

$ scl enable devtoolset-7 bash

CentOS/RHEL 开发环境之 devtoolset.
安装gcc时也需要安装devtoolset-7-runtime
yum install devtoolset-7-runtime
devtoolset-7-gcc devtoolset-7-gcc-c++ devtoolset-7-gdb