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  1. Qt
  2. QTBUG-112820

Undefined symbols for msgSend stubs when linking with Xcode < 14

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Details

    • Bug
    • Resolution: Fixed
    • Not Evaluated
    • 6.5.1, 6.6.0
    • 6.2, 6.5
    • Build System
    • None
    • iOS/tvOS/watchOS, macOS
    • c91ae574e (dev), 10290a3c9 (6.5)

    Description

      In Xcode 14 / ld 816 Apple implemented a size / performance optimization where they deduplicate _objc_msgSend setup infrastructure by Objective-C selectors.

      For static libraries, this causes issues when trying to link them into the app using Xcode 13, which isn't aware of these stubs.

      See https://github.com/llvm/llvm-project/issues/56034

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        Issue Links

          split from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-108270 Undefined symbols for architecture x86_64

          • P0: Blocker - MUST be fixed ASAP. This includes issues that prevent/block further Qt development; Legal issues & Serious data loss issues.
          • Closed
          For Gerrit Dashboard: QTBUG-112820
          # Subject Branch Project Status CR V
          472058,5 Disable objc_msgSend stubs in static libs to maintain Xcode < 14 compat dev qt/qtbase Status: MERGED +2 0
          472134,2 Disable objc_msgSend stubs in static libs to maintain Xcode < 14 compat 6.5 qt/qtbase Status: MERGED +2 0

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              vestbo Tor Arne Vestbø
              vestbo Tor Arne Vestbø
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              Dates

                Created:
                Updated:
                Resolved:

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