gcc 4.8安裝

# curl -Lks http://www.hop5.in/yum/el6/hop5.repo > /etc/yum.repos.d/hop5.repo

# yum install gcc gcc-g++ –y

# gcc --version

gcc 4.9 安裝

# yum install centos-release-scl –y

# yum install devtoolset-3-toolchain –y

# scl enable devtoolset-3 bash

# gcc –version

gcc 5.2 安裝

# yum install centos-release-scl –y

# yum install devtoolset-4-toolchain –y

# scl enable devtoolset-4 bash

# gcc --version

# g++ --version

CentOS6 yum升級高版本gcc