iOS 第三方库冲突的处理 - code life - 博客频道 - CSDN.NET

淩亂°似流年 2022-06-09 02:37 208阅读 0赞

# iOS 第三方库冲突的处理  #

最近项目组在做一些第三方功能的集成，不止一次的遇到第三方库冲突的问题，报错如下：

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       2 
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       3 
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       4 
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       5 
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       6 
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    </div></td> 
   <td style="outline: 0px; border: 0px; font-style: inherit; width: 1191px; margin: 0px !important; padding: 0px !important; vertical-align: top !important; background-position: 0px 50%;"> 
    <div style="margin: 0px; padding-right: 0px; padding-left: 0px; outline: 0px; vertical-align: baseline; font-style: inherit; white-space: pre; overflow: visible; tab-size: 4; padding-top: 5px !important; padding-bottom: 3px !important; border: none !important; font-size: 13px !important; line-height: 20px !important; background-image: none !important;"> 
     <div style="margin: 0px; padding: 0px 5px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; background-position: 0px 50%;"> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">duplicate </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">symbol </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">_OBJC_METACLASS_</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">$</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important;">_JKSerializer</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;"> </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">in</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">:</span> 
     </div> 
     <div style="margin: 0px; padding: 0px 5px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; background-position: 0px 50%;"> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Users</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">tony</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Desktop</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">XXXProject</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Lib</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">libMiPushSDK</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">.</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">a</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">(</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">JSONKit</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">.</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">o</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">)</span> 
     </div> 
     <div style="margin: 0px; padding: 0px 5px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; background-position: 0px 50%;"> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Users</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">tony</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Library</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Developer</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Xcode</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">DerivedData</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">XXXProject</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">-</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">boqkajmzatzxohbyrrhklfiuknic</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Build</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Products</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">Debug</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">-</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">iphoneos</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">/</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">libPods</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">.</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">a</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">(</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">JSONKit</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">.</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-weight: bold !important; font-size: inherit !important; line-height: inherit !important; color: rgb(128, 0, 128) !important;">o</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(51, 51, 51) !important;">)</span> 
     </div> 
     <div style="margin: 0px; padding: 0px 5px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; background-position: 0px 50%;"> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">ld</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;">:</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;"> </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 153, 153) !important;">24</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;"> </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">duplicate </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">symbols </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">for </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">architecture </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">armv7</span> 
     </div> 
     <div style="margin: 0px; padding: 0px 5px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; background-position: 0px 50%;"> 
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      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 45, 122) !important;">: linker</span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: rgb(0, 111, 224) !important;"> </span> 
      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">command </span> 
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      <span style="margin: 0px; padding: 0px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; color: teal !important;">exit </span> 
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     </div> 
     <div style="margin: 0px; padding: 0px 5px; outline: 0px; border: 0px; vertical-align: baseline; font-style: inherit; font-family: inherit; height: inherit; font-size: inherit !important; line-height: inherit !important; background-position: 0px 50%;">
       &nbsp; 
     </div> 
    </div></td> 
  </tr> 
 </tbody> 
</table>

在这个报错中，原因是第三方中自己打包了JSONKit库，而我们的项目中也使用了这个库。这种情况需要我们将第三方SDK中冲突的库移除掉，即将它拆包后重打包处理。

## 解决步骤 ##

首先按照上述错误中提到的路径找到库文件：`/Users/tony/Desktop/XXXProject/Lib/libMiPushSDK.a`，将它拷贝一份出来做进一步处理。

查看包信息：`lipo -info libx.a`  
如果提示fat file，那么代表这个包是支持多平台的，例如armv7，armv7s，i386等，这需要我们逐一做解包重打包操作。否则我们只需要做一次\[1-6\]操作即可

1.  创建临时文件夹，用于存放armv7平台解压后的.o文件：`mkdir armv7`
2.  取出armv7平台的包：`lipo libx.a -thin armv7 -output armv7/libx-armv7.a`
3.  查看库中所包含的文件列表：`ar -t armv7/libx-armv7.a`
4.  解压出object file（即.o后缀文件）：`cd armv7 && ar xv libx-armv7.a`
5.  找到冲突的包（JSONKit），删除掉`rm JSONKit.o`
6.  重新打包object file：`cd .. && ar rcs libx-armv7.a armv7/*.o`，可以再次使用\[2\]中命令确认是否已成功将文件去除
7.  将其他几个平台(armv7s, i386)包逐一做上述\[1-6\]操作
8.  重新合并为fat file的.a文件：  
    `lipo -create libx-armv7.a libx-armv7s.a libx-i386.a -output libMiPushSDK-new.a`
9.  拷贝到项目中覆盖源文件：  
    `cp libMiPushSDK-new.a /Users/tony/Desktop/XXXProject/Lib/libMiPushSDK.a`

## iOS编程：第三方静态库(.a文件)处理 ##

Monday, Sep 16th, 2013  | Posted in  [未分类][Link 1]  |  [1 Comment][]

在引用第三方库时，不时的会碰到诸如库冲突、库包含了某些禁用的API等问题，而这些库往往都被打包成了静态库文件（即 .a文件）来使用。这时就需要我们能够去对Object file进行一些必要的处理调整。如检索信息，移除冲突的库等。以下是一些常用的方法：

一、 查找.a文件中是否包含相关信息，如苹果禁用的unique Identifier。

二、去除不同的.a文件之间内含冲突的库，如openUDID库的冲突。

> 1. 查看architectures  
> lipo  -info  libx.a
> 
> 2. 如果是fat file，处理成non-fat  
> lipo  libx.a  -thin armv7  -output  libx-armv7.a
> 
> 3. 解压出object file  
> ar  xv  libx-armv7.a
> 
> 4. 打包object file  
> ar  rcs   libx.a   \*.o
> 
> 5. 生成Fat file  
> lipo  -create  Libarmv7.a  -output  libx.a
> 
> 6. 合并.a文件  
> lipo  -create  Libarmv6.a  Libarmv7.a  -output  Lib.a

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