Ruby解决方案：The 'ffi' native gem requires installed build tools ; 含最新DevKit下载地址

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本文提供了解决在安装Ruby时遇到的FFI依赖错误的详细步骤，包括下载并安装DevKit，以及如何正确配置PATH环境变量。通过遵循指南，用户可以顺利解决在使用Ruby开发过程中遇到的常见依赖问题。

Ruby解决方案：The 'ffi' native gem requires installed build tools ; 含最新DevKit下载地址

2012-02-24 9:27

如果安装的时候出现：

C:\Users\liyingxuan01>gem install watir
ERROR: Error installing watir:
The 'ffi' native gem requires installed build tools.

Please update your PATH to include build tools or download the DevKit
from 'http://rubyinstaller.org/downloads' and follow the instructions
at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'

解决方案：

1、下载DevKit

DevKit-tdm-32-4.5.2-20110712-1620-sfx.exe

2、解压DevKit

解压到C:\DevKit

3、安装并测试

cd到解压目录下：

C:\DevKit>ruby dk.rb init
[INFO] found RubyInstaller v1.9.3 at C:/Ruby193

Initialization complete! Please review and modify the auto-ge
'config.yml' file to ensure it contains the root directories
of the installed Rubies you want enhanced by the DevKit.

C:\DevKit>ruby dk.rb install
[INFO] Updating convenience notice gem override for 'C:/Ruby1
[INFO] Installing 'C:/Ruby193/lib/ruby/site_ruby/devkit.rb'

C:\DevKit>gem install rdiscount --platform=ruby
Fetching: rdiscount-1.6.8.gem (100%)
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
Successfully installed rdiscount-1.6.8
1 gem installed
Installing ri documentation for rdiscount-1.6.8...
Installing RDoc documentation for rdiscount-1.6.8...