无法设置ruby环境 - 安装fii gem错误

问题描述

我正在尝试为ruby项目设置环境。
但是当我运行'bundle'时，我在安装'fii'gem时出错：

 
  
安装ffi（1.8.1）
 Gem :: Installer :: ExtensionBuildError：错误：无法构建gem原生扩展。 
 
 /Users/bmalets/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb 
检查ffi.h ... *** extconf.rb失败*** 
由于某种原因无法创建Makefile，可能缺少
必需的库和/或头文件。查看mkmf.log文件以获取更多
的详细信息。您可能需要配置选项。 
 
 /Users/bmalets/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/mkmf.rb:381:in`try_do'：编译器无法生成一个可执行文件。 （RuntimeError）
您必须先安装开发工具。 
 
 Gem文件将保留安装在/Users/bmalets/.rvm/gems/ruby-1.9.3-p448@api2/gems/ffi-1.8.1以供检查。 
记录到/Users/bmalets/.rvm/gems/ruby-1.9.3-p448@api2/gems/ffi-1.8.1/ext/ffi_c/gem_make.out 
 
的结果安装ffi（1.8.1）时发生错误，并且Bundler无法继续。 
在捆绑之前确保`gem install ffi -v'1.8.1'`成功。 
 
  
 

我的环境：

• OS_X 10.8.4

• 
  

• ruby​​ 1.9.3p448




• Xcode 4.6.3




• libffi-3.0.13

请帮助我解决这个问题。
解决方案

确保你已经安装了Apple Xcode和命令行工具（请看这张截图）：









之后，别忘了安装libffi。



如果您使用自制软件

  brew install libffi 
 
   $ b> > sudo port install libffi 
  
 
I'm trying to setup environtment for ruby project.But when I run 'bundle', I have error during installing 'fii' gem:

    Installing ffi (1.8.1)
    Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /Users/bmalets/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb
    checking for ffi.h... *** extconf.rb failed ***
    Could not create Makefile due to some reason, probably lack of
    necessary libraries and/or headers.  Check the mkmf.log file for more
    details.  You may need configuration options.

    /Users/bmalets/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
    You have to install development tools first.

    Gem files will remain installed in /Users/bmalets/.rvm/gems/ruby-1.9.3-p448@api2/gems/ffi-1.8.1 for inspection.
    Results logged to /Users/bmalets/.rvm/gems/ruby-1.9.3-p448@api2/gems/ffi-1.8.1/ext/ffi_c/gem_make.out

    An error occurred while installing ffi (1.8.1), and Bundler cannot continue.
    Make sure that `gem install ffi -v '1.8.1'` succeeds before bundling.


My environment: 
OS_X 10.8.4
ruby 1.9.3p448
Xcode 4.6.3
libffi-3.0.13
Please, help me to fix it.
 解决方案 
Make sure that you have installed Apple Xcode and Command Line Tools (look at this screenshot):
https://developer.apple.com/technologies/tools/
After that, don't forget to install libffi.
1) if you are using homebrew
brew install libffi
2) if you are using macport
sudo port install libffi
                        
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