ruby编译安装

1 安装依赖。

yum install openssl* openssl-devel zlib-devel gcc gcc-c++ make autoconf readline-devel curl-devel expat-devel gettext-devel

2  下载源码包，这里用taobao的镜像，比官网快太多了。

https://ruby.taobao.org/
wget https://ruby.taobao.org/mirrors/ruby/ruby-2.2.0.tar.gz
tar xf ruby-2.2.0.tar.gz
./configure --prefix=/usr/local/ruby
make
make install

3.配置gem 镜像

gem sources --remove https://rubygems.org/
gem sources -a https://ruby.taobao.org/
gem sources -l

官方的源时常被墙，无法下载。