COCOAPODS:安装/更新RUBY环境教程

简介

有时候在安装cocoapods时会产生如下错误

<code class="hljs http has-numbering"><span class="hljs-attribute" style="color: rgb(163, 21, 21);">ERROR: <span class="hljs-string"> Error installing cocoapods: activesupport requires Ruby version >= 2.2.2.</span></span></code>

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这就说明,你的Ruby环境需要升级更新, 我以mac OS 10.11 下更新ruby方法为例, 说一说更新Ruby环境的详细步骤.

原因和方案

在安装cocoapods过程中提示需要Ruby的版本在2.2.2以上，而目前使用的Ruby版本是Mac系统自带的1.8.7。所以需要对Ruby进行升级。以下是安装Ruby的三种方法: 
1.下载ruby源代码，编译，安装 
2.使用发行版自带的安装包，安装 
3.使用 rvm安装

通过rvm安装Ruby详细步骤

这里还是推荐大家通过rvm对Ruby进行升级的.

1>安装 ram 
RVM:Ruby Version Manager,Ruby版本管理器，包括Ruby的版本管理和Gem库管理(gemset)

<code class="hljs avrasm has-numbering">$ curl -L get<span class="hljs-preprocessor">.rvm<span class="hljs-preprocessor">.io | bash -s stable</span></span></code>

2>加载文件, 测试是否安装正常(按照提示操作)

<code class="hljs smalltalk has-numbering"><span class="hljs-char">$ source ~/.bashrc  <span class="hljs-char">$ source ~/.bash_profile  <span class="hljs-char">$ source ~/.profile<span class="hljs-char">$ rvm -v</span></span></span></span></code>

3>如果有下面的提示, 请reload rvm

<code class="hljs livecodeserver has-numbering">A RVM <span class="hljs-built_in" style="color: rgb(0, 0, 255);">version <span class="hljs-number">1.27<span class="hljs-number">.0 (latest) is installed yet <span class="hljs-number">1.25<span class="hljs-number">.23 (stable) is loaded.Please <span class="hljs-built_in">do <span class="hljs-constant">one <span class="hljs-operator">of <span class="hljs-operator">the following:  * <span class="hljs-string" style="color: rgb(163, 21, 21);">'rvm reload'  * <span class="hljs-built_in" style="color: rgb(0, 0, 255);">open <span class="hljs-operator">a <span class="hljs-built_in">new <span class="hljs-built_in">shell  * <span class="hljs-string" style="color: rgb(163, 21, 21);">'echo rvm_auto_reload_flag=1 >> ~/.rvmrc' <span class="hljs-comment" style="color: green;"># for auto reload with msg.  * <span class="hljs-string" style="color: rgb(163, 21, 21);">'echo rvm_auto_reload_flag=2 >> ~/.rvmrc' <span class="hljs-comment" style="color: green;"># for silent auto reload.</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

 

输入命令:

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ rvm reload<span class="hljs-variable">$ rvm -v</span></span></code>

4>查看当前ruby版本 ,获取rvm 列表

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ ruby -v   <span class="hljs-variable">$ rvm list known </span></span></code>

5>安装ruby可能出的错误 (若未出错, 请跳过进入第6步)

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ rvm install <span class="hljs-number">2.3</span></span></code>

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错误1: 在安装ruby的时候, 可能会如下报错, 提示 Updating system[YourMacName] password required for ‘port -dv self update’, 如下: 

解决: 
进行更新:

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ sudo port <span class="hljs-keyword" style="color: rgb(0, 0, 255);">self update</span></span></code>

更新完成后, 如图: 

错误2: 
或者你可能遇到如下错误, 原因是需要安装Homebrew.

<code class="hljs livecodeserver has-numbering">Error running <span class="hljs-string" style="color: rgb(163, 21, 21);">'requirements_osx_port_libs_install curl-ca-bundle automake libtool libyaml libffi libksba',showing <span class="hljs-keyword" style="color: rgb(0, 0, 255);">last <span class="hljs-number">15 <span class="hljs-keyword">lines <span class="hljs-operator">of /Users/acewill/.rvm/<span class="hljs-built_in">log/<span class="hljs-number">1468253599_ruby-<span class="hljs-number">2.3<span class="hljs-number">.0/package_install_curl-ca-bundle_automake_libtool_libyaml_libffi_libksba.<span class="hljs-built_in">log</span></span></span></span></span></span></span></span></span></span></code>

 
解决: 
参照stack overflow上的问题Installing RVM: “Requirements installation failed with status: 1.”

需要安装Homebrew , 通过以下命令:

<code class="hljs bash has-numbering">ruby <span class="hljs-operator">-e <span class="hljs-string" style="color: rgb(163, 21, 21);">"<span class="hljs-variable" style="color: green;">$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"</span></span></span></code>

6>重新安装ruby 
安装完成后, 重新执行安装cocoapods的命令.

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ rvm install <span class="hljs-number">2.3</span></span></code>

7>安装rails

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ gem install rails</span></code>

8>卸载ruby方法 
获取ruby已安装列表, 然后卸载ruby

<code class="hljs ruby has-numbering"><span class="hljs-variable" style="color: green;">$ rvm list<span class="hljs-variable">$ rvm remove <span class="hljs-number">2.3</span></span></span></code>