[Bug] Undefined Objective-C symbol errors preventing iOS builds

[WarrenHullStunts]

Description Builds of the ARFoundation samples are failing with "undefined symbol" errors. Here are the first 3 of 99 for reference:

Undefined symbols for architecture arm64: "_objc_msgSend$copyFrom:withStride:toDestination:trackingState:", referenced from: -[TrackableProvider copyFromChanges:withStride:toAdded:toUpdated:toRemoved:] in libUnityARKit.a(TrackableProvider.o) "_objc_msgSend$deallocNativePtr:", referenced from: -[TrackableProvider copyFromChanges:withStride:toAdded:toUpdated:toRemoved:] in libUnityARKit.a(TrackableProvider.o) ___28-[TrackableProvider dealloc]_block_invoke in libUnityARKit.a(TrackableProvider.o) "_objc_msgSend$copyFrom:toDestination:trackingState:nativePtr:", referenced from: -[TrackableProvider copyFrom:withStride:toDestination:trackingState:] in libUnityARKit.a(TrackableProvider.o)

To Reproduce

• git clone the 5.0 arfoundation-samples repository
• open in Unity
• change platform to iOS in build settings and build
• open newly created Xcode project
• in the "signing & capabilities" tab on the "Unity-iPhone" target, set signing to "automatic" and choose a team
• connect an iOS device and choose it as the device target
• build the project with the play button

Expected behavior The project should build successfully.

Actual behavior The project fails with 99 errors of the type "Undefined symbol: _objc_msgSend$..."

Smartphone

• Device: iPhone 12 Pro Max
• OS: 15.5
• Unity 2022.2.0f1
• XCode Version 13.4.1
• ARFoundation 5.0.3

[andyb-unity]

You are required to build with Xcode 14 or newer as of com.unity.xr.arkit version 5.0.3. See the changelog for more information: https://docs.unity3d.com/Packages/com.unity.xr.arkit@5.0/changelog/CHANGELOG.html

This change is necessary for your app to behave correctly on iOS 16 devices, as Apple does not support iOS 16 API's in Xcode 13.

[WarrenHullStunts]

Thank you for the help. That solved the issue.