在LinuxCentOS6.6上安装Python2.7.9本文适用于Centos6.5

CentOS 6.6自带的是Python 2.6.6，而编译llvm需要Python 2.7以上。

checking for python... /usr/bin/python checking for python >= 2.7... not found configure: error: found python 2.6.6 (/usr/bin/python); required >= 2.7

yum中最新的也是Python 2.6.6，只能下载Python 2.7.9的源代码自己编译安装。

操作步骤如下：

1）安装devtoolset

yumgroupinstall"Developmenttools"

2）安装编译Python需要的包包

yuminstallzlib-devel
yuminstallbzip2-devel
yuminstallopenssl-devel
yuminstallncurses-devel
yuminstallsqlite-devel

3）下载并解压Python 2.7.9的源代码

cd/opt
wget--no-check-certificatehttps://www.python.org/ftp/python/2.7.9/Python-2.7.9.tar.xz
tarxfPython-2.7.9.tar.xz
cdPython-2.7.9

4）编译与安装Python 2.7.9

./configure--prefix=/usr/local
make&&makealtinstall

5）将python命令指向Python 2.7.9

ln-s/usr/local/bin/python2.7/usr/local/bin/python

6）检查Python版本

sh
sh-4.1#python-V
Python2.7.9