More symbols seem to be missing in addition to just NSDecimal. I'm getting the following crash when building with Xcode 16.0 (16A242d) to an iPhone running iOS 16.7.8. dyld[75345]: Symbol not found: _NSURLDirectoryEntryCountKey Referenced from: <UUID> /private/var/containers/Bundle/Application/<UUID>/MyApp.app/MyApp.debug.dylib Expected in: <UUID> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation Commenting out all code using URLResourceValues.directoryEntryCountKey fixes the build and it launches successfully on the iPhone.