Linux下自动安装gcc
第一步：执行安装命令 yum install gcc
但是我在安装的过程中一直报错：
报错内容（部分）：
Error Downloading Packages:
mpfr-2.4.1-6.el6.x86_64: failure: Packages/mpfr-2.4.1-6.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
libgomp-4.4.7-17.el6.x86_64: failure: Packages/libgomp-4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
gcc-c+±4.4.7-17.el6.x86_64: failure: Packages/gcc-c+±4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
libgcc-4.4.7-17.el6.x86_64: failure: Packages/libgcc-4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
cpp-4.4.7-17.el6.x86_64: failure: Packages/cpp-4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
libstdc+±4.4.7-17.el6.x86_64: failure: Packages/libstdc+±4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
gcc-4.4.7-17.el6.x86_64: failure: Packages/gcc-4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
cloog-ppl-0.15.7-1.2.el6.x86_64: failure: Packages/cloog-ppl-0.15.7-1.2.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
ppl-0.10.2-11.el6.x86_64: failure: Packages/ppl-0.10.2-11.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
libstdc+±devel-4.4.7-17.el6.x86_64: failure: Packages/libstdc+±devel-4.4.7-17.el6.x86_64.rpm from base: [Errno 256] No more mirrors to try.
第二步 清理缓存：
yum clean all
yum makecache
但仍旧报错：
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
14: PYCURL ERROR 6 - “Couldn’t resolve host ‘mirrorlist.centos.org’”
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
[root@app softback]# yum -y install gcc gcc-c++ kernel-devel
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
14: PYCURL ERROR 6 - “Couldn’t resolve host ‘mirrorlist.centos.org’”
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
[root@app softback]# yum install gcc-c++ libstdc+±devel
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
14: PYCURL ERROR 6 - “Couldn’t resolve host ‘mirrorlist.centos.org’”
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
这种错误，是因为没有配置/etc/resolv.conf。
解决方法：编辑resolv.conf文件，添加：nameserver 8.8.8.8
第三步 配置文件：vi resolv.conf
按字母i，进入插入模式，修改nameserver的值为 8.8.8.8
按Esc后，:wq保存退出即可
第四步 执行 yum makecache 指令，等该指令结束后再执行安装gcc指令
最后终于安装成功啦，自己偷偷鼓个掌庆祝下