# UE5.3 打包 android 报错 UBlueprintFunctionLibrary 虚函数未实现

**URL:** <https://forums.unrealengine.com/t/ue5-3-android-ublueprintfunctionlibrary/2163752>\
**Category:** 简体中文 (Simplified Chinese)\
**Tags:** unreal-engine, question\
**Created:** [December 2, 2024, 6:18am UTC](https://forums.unrealengine.com/t/ue5-3-android-ublueprintfunctionlibrary/2163752 "2024-12-02T06:18:50Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Aikusuodi](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/aikusuodi/32/612592_2.png) [@Aikusuodi](https://forums.unrealengine.com/u/Aikusuodi)\
**Post date:** [December 2, 2024, 6:18am UTC](https://forums.unrealengine.com/t/ue5-3-android-ublueprintfunctionlibrary/2163752/1 "2024-12-02T06:18:50Z")

</div>

尝试自己写C++插件，蓝图调用，打包windows是正常的，但是打包android报错了，错误原因：  
PackagingResults: Error: undefined symbol: typeinfo for UBlueprintFunctionLibrary  
PackagingResults: Error: linker command failed with exit code 1 (use -v to see invocation)

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/9/0/290c2f1741d925d8f5e2c440ef51b2221f5e7cf3.png)

网上说是虚函数未实现，但是代码是跟着教程写的，应该不会有问题啊  
有没有哪位大神知道原因的，求教！！！