cmake的版本太低，更新cmake.
原文地址：http://luochunfeng163.blog.163.com/blog/static/1670092492014519105312792/
#yum remove cmake
#wget http://www.cmake.org/files/v3.7/cmake-3.7.1.tar.gz
#tar -xzvf cmake-3.7.1.tar.gz
#cd cmake-3.7.1
#./configure
#make
#make install
#wget http://www.cmake.org/files/v3.7/cmake-3.7.1.tar.gz
#tar -xzvf cmake-3.7.1.tar.gz
#cd cmake-3.7.1
#./configure
#make
#make install
-bash: wget: command not found的两种解决方法
解决方法：
1、rpm 安装
下载wget的RPM包：
32位：http://mirrors.163.com/centos/6.3/os/i386/Packages/wget-1.12-1.4.el6.i686.rpm
6432位：http://mirrors.163.com/centos/6.3/os/x86_64/Packages/wget-1.12-1.4.el6.x86_64.rpm
rpm ivh wget-1.12-1.4.el6.i686.rpm 安装即可；64位当然选择wget-1.12-1.4.el6.x86_64.rpm了
2、yum安装
yum -y install wget