錯誤：安裝導軌錯誤：無法建立寶石原生擴展

Question

我在嘗試安裝Rails時，這個錯誤：

Z:\AlexL\My Documents\rails>gem install rails 
ERROR: Error installing rails: 
     The 'json' 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' 

Z:\AlexL\My Documents\rails>gem install rails -include-dependencies 
ERROR: Error installing rails: 
     The 'json' 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' 
ERROR: While executing gem ... (URI::InvalidURIError) 
    bad URI(is not URI?): ?gems=ûinclude-dependencies 

Z:\AlexL\My Documents\rails>rails 
'rails' is not recognized as an internal or external command, 
operable program or batch file. 

我的紅寶石版本是：

紅寶石1.9.3p484

我該如何解決這個問題？我在窗戶旁邊。

Answer 1

你有明確的錯誤消息指出：

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 '

所以，我的建議是你下載的devkit，並按照指示。