# Undefined symbols for architecture x86\_64: "typeinfo for ACharacter", referenced from:

**URL:** <https://forums.unrealengine.com/t/undefined-symbols-for-architecture-x86-64-typeinfo-for-acharacter-referenced-from/1194690>\
**Category:** Platform & Builds\
**Tags:** linker-error, unreal-engine, build-failed, question\
**Created:** [June 10, 2023, 7:29am UTC](https://forums.unrealengine.com/t/undefined-symbols-for-architecture-x86-64-typeinfo-for-acharacter-referenced-from/1194690 "2023-06-10T07:29:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Meganite\_game1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Meganite\_game1](https://forums.unrealengine.com/u/Meganite_game1)\
**Post date:** [June 10, 2023, 7:29am UTC](https://forums.unrealengine.com/t/undefined-symbols-for-architecture-x86-64-typeinfo-for-acharacter-referenced-from/1194690/1 "2023-06-10T07:29:38Z")

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Hello. I can’t compile my project on my mac. Linker gives the following error:

```auto
Undefined symbols for architecture x86_64:
  "typeinfo for ACharacter", referenced from:
      typeinfo for AWalkingPawn in Module.ConstructorApp.12_of_16.cpp.o
  // And it continues listing down typeinfos for other classes.

```

Wha should I do?

---

<div class="post-metadata">

**Author:** ![mclark4386](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@mclark4386](https://forums.unrealengine.com/u/mclark4386)\
**Post date:** [October 27, 2023, 4:12pm UTC](https://forums.unrealengine.com/t/undefined-symbols-for-architecture-x86-64-typeinfo-for-acharacter-referenced-from/1194690/2 "2023-10-27T16:12:41Z")

</div>

Did you ever figure out what was going on?