I'm building a binary framework in Xcode 13.1 and expecting it to work in Xcode 12.5.1. I have BUILD_LIBRARY_FOR_DISTRIBUTION=Yes but the generated swift interface still references the Concurrency library (as import _Concurrency) because my framework contains UIViewController instances (and iOS 15 SDK now marks these with MainActor). Is there a way to build the framework so it's actually compatible with Xcode 12, have I missed some settings?
As an example, the generated swift interface contains:
...
import _Concurrency
...
@objc @objcMembers @_Concurrency.MainActor(unsafe) public class MyViewController : UIKit.UIViewController {
Any help appreciated.
John
