OSX 10.14.2 安装Cocoapods 出现问题的解决方法

今天尝试用 Cocoapods安装个第三方库.. 输入pod install， 发现 command not find。 WTF！

估计是升级10.11后Cocoapods被干掉了。

我输入 sudo gem install cocoa pods 之后，出现如下问题：

ERROR:  While executing gem ... (Gem::DependencyError)
    Unable to resolve dependencies: cocoapods requires cocoapods-core (= 0.33.1), claide (~> 0.6.1), cocoapods-downloader (~> 0.6.1), cocoapods-plugins (~> 0.2.0), cocoapods-try (~> 0.3.0), cocoapods-trunk (~> 0.1.1), nap (~> 0.7)

解决方法：sudo gem update --system
  
但是出现了另一个错误：

ERROR:  While executing gem ... (Errno::EPERM)
    Operation not permitted - /usr/bin/xcodeproj

在Stackoverflow上找到了解决方法：

在终端中输入：sudo nvram boot-args="rootless=0"; sudo reboot
然后你的电脑会重启
之后再输入 sudo gem install cocoapods -V 
就可以了
不放心的话输入
pod --version
0.37.2 //显示出版本就说明成功了

但是之后我pod install的时候又花式出错

[!] Unable to add a source with url `https://github.com/CocoaPods/Specs.git` named `master`.

You can try adding it manually in `~/.cocoapods/repos` or via `pod repo add`.

我尝试按提示的方法

pod repo add master https://github.com/CocoaPods/Specs.git

然而还是有错..

[!] /usr/bin/git clone http://git.oschina.net/akuandev/Specs.git master

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

最后的解决方法：

sudo xcode-select -switch /Applications/Xcode-beta.app/Contents/Developers

后面的地址你可以打开Xcode显示包内容，找到那个文件夹拖到终端里面比较不容易错。

CocoaPods 0.38.0.beta.2 is available.

To update use: `gem install cocoapods --pre`

[!] This is a test version we'd love you to try.

For more information see http://blog.cocoapods.org

and the CHANGELOG for this version http://git.io/BaH8pQ.

CocoaPods 0.38.0.beta.2 is available.

To update use: `gem install cocoapods --pre`

[!] This is a test version we'd love you to try.

For more information see http://blog.cocoapods.org

and the CHANGELOG for this version http://git.io/BaH8pQ.

最后终于修成正果..

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作者：NSNirvana
来源：CSDN
原文：https://blog.csdn.net/NSNirvana/article/details/46873071
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