Debian编译Ruby

1、首先要安装两个依赖项

#apt-get install zlib1g zlib1g-dev
#apt-get install libssl libssl-dev

2、然后下载Ruby源码
https://www.ruby-lang.org/en/

./configure --prefix=usr/ruby/ruby_2.2.3
make
make install

3、配置环境变量
编辑/etc/profile

export RUBY_HOME=/usr/ruby/ruby_2.2.3
export RUBYLIB=$RUBY_HOME/lib/ruby/2.2.0:$RUBY_HOME/lib/ruby/2.2.0/x86_64-linux:$RUBY_HOME/share/ri/2.2.0:$RUBYLIB
export PATH=$RUBY_HOME/bin:$PATH

更新环境变量

source /etc/profile

4、切换为国内源

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

5、安装rails

$ gem install rails