rails

rubyinstaller-1.9.3-p545

ruby -v
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gem update --system
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gem -v
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安装DevKit-tdm-32-4.5.2-20111229-1559-sfx

ruby dk.rb init

ruby dk.rb install
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gem install rails

rails -v
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软件

G:\tools\mysql-connector-c-6.1.3-win32

安装
gem install mysql2 -- '--with-mysql-dir="G:\tools\mysql-connector-c-6.1.3-win32"'

卸载
gem uninstall mysql

---  gem update -- system