For some reason when I try to archive an app, which is using saveMachineStateTo function, it fails with this error:
Value of type 'VZVirtualMachine' has no member 'saveMachineStateTo'
It works fine when running as debug from Xcode. Also fails if I change run destination to release. I have project set to macOS 14. What can cause this?
Oh, wow, that’s tricky. In the <Virtualization/VZVirtualMachine.h> header the save and restore methods are wrapped in:
#if defined(__arm64__)
…
#endif
That means they’re not available on Intel. I’m still using an Intel machine, so I see this all the time. You must be using an Apple silicon machine, so you only see it when you create a release build, which builds the Intel architecture.
How to proceed depends on your deployment goal:
If your app only works on Apple silicon, remove the Intel architecture from your release build.
If virtualisation is only part of your app’s feature set, and so you want to support the rest of your app on Intel, wrap your virtualisation functionality in a conditional:
#if arch(arm64)
…
#endif
This is the Swift equivalent to the Objective-C in the earlier snippet.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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