使用rspec时出错,在安装Homebrew和卸载MacPorts后缺少库

Question

我可能已经超出了我的知识迈出了一步.我安装了Homebrew,在继续向我发出关于安装MacPorts的警告后,我卸载了它.但是现在我的rspec测试没有运行.

这些是我得到的错误:

/Users/mark/.rvm/gems/ruby-1.9.2-p180/gems/nokogiri-1.4.4/lib/nokogiri.rb:13:in `require': dlopen(/Users/mark/.rvm/gems/ruby-1.9.2-p180/gems/nokogiri-1.4.4/lib/nokogiri/nokogiri.bundle, 9): Library not loaded: /opt/local/lib/libiconv.2.dylib (LoadError)
  Referenced from: /Users/mark/.rvm/gems/ruby-1.9.2-p180/gems/nokogiri-1.4.4/lib/nokogiri/nokogiri.bundle
  Reason: Incompatible library version: nokogiri.bundle requires version 8.0.0 or later, but libiconv.2.dylib provides version 7.0.0 - /Users/mark/.rvm/gems/ruby-1.9.2-p180/gems/nokogiri-1.4.4/lib/nokogiri/nokogiri.bundle
.....
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我通过Homebrew安装了libiconv,但是没有解决它.它抱怨libiconv版本号.这是问题吗？

这里发生了什么,我需要做什么？

Answer 1

我让任何感兴趣的人都能再次工作.我删除并重新安装了nokogiri gem,一切似乎都在恢复.

Answer 2

通常,此问题是由于无法找到正确的libiconv引起的.以下是我解决问题的方法:

检查输出otool -L /usr/lib/libiconv.2.dylib.我得到以下输出:

/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)

然后我用Homebrew安装libiconv brew install libiconv,并显示它的安装位置brew list libiconv.我得到以下输出:

/usr/local/Cellar/libiconv/1.14/bin/iconv
/usr/local/Cellar/libiconv/1.14/include/ (3 files)
/usr/local/Cellar/libiconv/1.14/lib/libcharset.1.dylib
/usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib
/usr/local/Cellar/libiconv/1.14/lib/ (3 other files)
/usr/local/Cellar/libiconv/1.14/share/doc/ (6 files)
/usr/local/Cellar/libiconv/1.14/share/man/ (6 files)

libiconv安装在/usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib.然后我检查新安装的libiconv的版本, otool -L /usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib我得到以下输出:

/usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib:
/usr/local/opt/libiconv/lib/libiconv.2.dylib (compatibility version 8.0.0, current version 8.1.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)

版本是正确的,我们需要使这个库可用于Ruby.创建符号链接是一种快速解决方案:

sudo ln -s /usr/local/opt/libiconv/lib/libiconv.2.dylib /opt/local/lib/libiconv.2.dylib