ARKit XR preview 17 - library not found for -lARExtensions

My ARFoundation builds have been working fine, but as I’ve upgraded from ARKit XR preview 15 to 17, now when I build in XCode I get the following error: “library not found for -lARExtensions”

I’ve attached a screenshot of my linked library’s in XCode…
Any ideas what I need to do to get this resolved?

(I also have updated ARFoundation to Preview 20 and that has not helped.)

Try rebuilding the trampoline project. ARExtensions added a library recently, so the trampoline project probably just needs to be regenerated to pick up the change.

@tdmowrer Could you help me understand what the “trampoline project” is? Is that part of the XCode project?

Sorry, that’s the Xcode project that Unity generates you build for iOS. That probably just needs to be regenerated.

Ah ok. I did do a fresh build and still have the error. I just deleted my Unity project’s Library folder and am reimporting for the iOS platform, we’ll see if that works…