```

Undefined symbols for architecture arm64:

  "_OBJC_CLASS_$_ARObjectScanningConfiguration", referenced from:

      objc-class-ref in ARKitNativeObjectDetection.o

  "_OBJC_CLASS_$_ARObjectAnchor", referenced from:

      objc-class-ref in ARKitNativeObjectDetection.o

  "_OBJC_CLASS_$_ARPointCloud", referenced from:

      objc-class-ref in ARPointCloud.o

  "_OBJC_CLASS_$_AREnvironmentProbeAnchor", referenced from:

      objc-class-ref in ARSessionNative.o

      objc-class-ref in AREnvironmentProbe.o

  "_OBJC_CLASS_$_ARWorldTrackingConfiguration", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_ARReferenceImage", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_AROrientationTrackingConfiguration", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_ARImageAnchor", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_ARAnchor", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_ARWorldMap", referenced from:

      objc-class-ref in ARWorldMap.o

      objc-class-ref in ARSessionNative.o

      objc-class-ref in ARKitNativeObjectDetection.o

  "_OBJC_CLASS_$_ARPlaneAnchor", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_ARSession", referenced from:

      objc-class-ref in ARSessionNative.o

  "_OBJC_CLASS_$_ARReferenceObject", referenced from:

      objc-class-ref in ARWorldMap.o

      objc-class-ref in ARSessionNative.o

      objc-class-ref in AREnvironmentProbe.o

      objc-class-ref in ARKitNativeObjectDetection.o

ld: symbol(s) not found for architecture arm64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

```

解决方案：

解决步骤1 解决步骤2

以上2步就应该能解决这个问题了。

解决思路：

思路最重要，渔和鱼的区别。

首先我们看报错：

Undefined symbols for architecture arm64:

这句一般是因为库出问题导致的，有多种可能，这里说的是架构问题，找不到arm64的。

再看下一句：

  "_OBJC_CLASS_$_ARObjectScanningConfiguration", referenced from:

      objc-class-ref in ARKitNativeObjectDetection.o

我的理解是，这里说ARKitNativeObjectDetection这个类，在arm64架构下，找不到ARObjectScanningConfiguration这个东西。

我们进入ARKitNativeObjectDetection这个类搜索一下ARObjectScanningConfiguration：

进入这个类，鼠标在ARObjectScanningConfiguration，按住command点进去看下 发现来到了这里，系统的ARKit库

既然这里用到了ARKit，而且报错说这里有问题，直觉告诉我可能是这个库没有引入。

在报错的UnityFramework里面，果然发现没有引入ARKit

所以直接引入ARKit就行了。

PS：我也不知道为啥我生成的Unity工程没有ARKit，可能有啥地方出问题了吧。

解决思路就是这个，网上搜到的很多答案都是直接说怎么做，很少说为什么，希望大家能分享下自己的思路。嗯，就这样吧。