centos 安装 g++7_yum install g++ 7

方法一

yum -y install centos-release-scl 
yum -y install devtoolset-7-gcc devtoolset-7-gcc-c++ devtoolset-7-binutils 
scl enable devtoolset-7 bash
1
2
3

方法二

wget http://mirrors.concertpass.com/gcc/releases/gcc-7.3.0/gcc-7.3.0.tar.gz
tar -zxvf gcc-7.3.0.tar.gz
cd gcc-7.3.0
yum -y install  gmp  gmp-devel  mpfr  mpfr-devel  libmpc  libmpc-devel
./configure --disable-multilib
make -j 8
make install
yum -y remove gcc gcc-c++uy
ln -s /usr/local/bin/g++ /usr/bin/g++
1
2
3
4
5
6
7
8
9