相关疑难解决方法(0)

Mac OS X 10.8.2
Xcode 4.5.2(安装在/Applications/Xcode.app)

尝试
xcode-select -switch /Applications/Xcode.app
之后
xcode-select -print-path
输出正确的路径(/Applications/Xcode.app).但
xcrun -find gcc
失败并出现错误
xcrun:错误:无法统计活动Xcode路径'/Developer/Xcode.app/Contents/Developer'.(没有相应的文件和目录).

更新1:
这是权限说明符

ls -l /Applications/Xcode.app  

总计0
drwxr-xr-x @ 16 my admin 544 Oct 30 23:38内容

ls -l /Applications/Xcode.app/Contents  

总计24
drwxr-xr-x @ 8 my admin 272 Oct 30 23:30申请
drwxr-xr-x @ 9我的管理员306 10月30日23:36开发人员
drwxr-xr-x @ 5我的管理员170 10月30日23:30框架
-rw-r - r - @ 1 my admin 15289 Oct 19 14:22 Info.plist
drwxr-xr-x @ 3 my admin 102 Aug 5 08:03 Library
drwxr-xr-x @ …

我需要帮助。我正在尝试将 CocoaPods 安装到我的 mac，当我进入该过程的“pod setup”部分时收到以下错误。有任何想法吗？

Nathans-MacBook-Air:~ nathannoel$ pod setup --verbose

/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.5.3/lib/cocoapods/command.rb:118:in 
`git_version': Failed to extract git version from `git --version`
("xcrun: error: invalid active developer path
  (/Applications/Xcode.app/Contents/Developer), missing xcrun at: 
   /Applications/Xcode.app/Contents/Developer/usr/bin/xcrun\n") (RuntimeError)
  from /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.5.3/lib/cocoapods/command.rb:130:in 
 `verify_minimum_git_version!'
  from /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.5.3/lib/cocoapods/command.rb:49:in `run'
  from /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.5.3/bin/pod:55:in `<top (required)>'
  from /usr/local/bin/pod:22:in `load'
  from /usr/local/bin/pod:22:in `<main>'

Nathans-MacBook-Air:~ nathannoel$