Xcode 9 GM undefined symbols for arm64 architecture

Question

In the Xcode 9 GM release, I get some compile-time errors for undefined symbols for architecture arm64 , namely for AVFoundation with:

• AVCapturePhotoOutput().supportedFlashModes
• AVCapturePhotoSettings().availablePreviewPhotoPixelFormatTypes

In both cases, using their "undocumented" __supportedFlashModes / __availablePreviewPhotoPixelFormatTypes builds just fine.

• Has anyone encountered the same problems in a different framework?
• The API does not document such breaking changes , is this a bug?

Answer 1

They were "inadvertently" marked private. Should be returned with the next version, I think? Workaround above recommended by Apple.

Official answer