CentOS6/7快捷使用gcc5

Centos6/7自带的gcc为4.x版本，可通过devtoolset工具集安装gcc5.x版本

1. 添加yum源

    1）CentOS6

[hhorak-devtoolset-4-rebuild-bootstrap2]

name=Copr repo for devtoolset-4-rebuild-bootstrap2 owned by hhorak
baseurl=https://copr-be.cloud.fedoraproject.org/results/hhorak/devtoolset-4-rebuild-bootstrap2/epel-6-$basearch/
type=rpm-md
skip_if_unavailable=True
gpgcheck=1
gpgkey=https://copr-be.cloud.fedoraproject.org/results/hhorak/devtoolset-4-rebuild-bootstrap2/pubkey.gpg
repo_gpgcheck=0
enabled=1
enabled_metadata=1

    2) CentOS7

[hhorak-devtoolset-4-rebuild-bootstrap2]
name=Copr repo for devtoolset-4-rebuild-bootstrap2 owned by hhorak
baseurl=https://copr-be.cloud.fedoraproject.org/results/hhorak/devtoolset-4-rebuild-bootstrap2/epel-7-$basearch/
type=rpm-md
skip_if_unavailable=True
gpgcheck=1
gpgkey=https://copr-be.cloud.fedoraproject.org/results/hhorak/devtoolset-4-rebuild-bootstrap2/pubkey.gpg
repo_gpgcheck=0
enabled=1
enabled_metadata=1

2.安装程序

    

yum install devtoolset-4-gcc devtoolset-4-binutils devtoolset-4-gcc-c++

3. 配置环境变量

    

export PATH=/opt/rh/devtoolset-4/root/usr/bin:$PATH

使用gcc -v检查是否配置完成