centos7安装gcc报错

yum install -y gcc报错的解决方法如下

错误：软件包：glibc-2.17-196.el7.i686 (yum.repo)

      需要：glibc-common = 2.17-196.el7

      已安装: glibc-common-2.17-222.el7.x86_64 (@base)

          glibc-common = 2.17-222.el7

      可用: glibc-common-2.17-196.el7.x86_64 (yum.repo)

          glibc-common = 2.17-196.el7

错误：软件包：gcc-4.8.5-16.el7.x86_64 (yum.repo)

      需要：cpp = 4.8.5-16.el7

      已安装: cpp-4.8.5-28.el7_5.1.x86_64 (@updates)

          cpp = 4.8.2-16.el7_5

          cpp = 4.8.5-28.el7_5.1

      可用: cpp-4.8.5-16.el7.x86_64 (yum.repo)

          cpp = 4.8.5-16.el7

          cpp = 4.8.2-16.

输入命令：yum distro-sync

即可解决问题。