Build errors when Swift class in a Swift target inherits from ObjC class in an an ObjC target, which in turn depends on another target

[mattwylder]

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What did you do?

• Create a Swift target HouseSwift with a dependency on an Objective C target CatObjC, which in turn has a dependency on another Swift target DogSwift. (The problem also occurs if DogSwift is replaced with an ObjC target)
• Write an implementation of an Objective C classCat in target CatObjC which uses a Swift class Dog from DogSwift
• In CatObjC, create a subclass Tabby which inherits Cat
• Create a Swift class Housewhich inherits Tabby
• Create a podspec
• run pod lib lint

What did you expect to happen?

Build without errors. The project builds locally and through Carthage.

What happened instead?

Received build error

 - ERROR | [iOS] [TestingInteroperability/HouseSwift] xcodebuild:  /Users/username/Library/Developer/Xcode/DerivedData/App-gbrkugflhfhqpbhhoaxryivoepsa/Build/Products/Release-iphonesimulator/TestingInteroperability/TestingInteroperability.framework/Headers/TestingInteroperability-Swift.h:267:20: error: cannot find interface declaration for 'Tabby', superclass of 'House'

CocoaPods Environment

Stack

   CocoaPods : 1.11.3
        Ruby : ruby 2.7.6p219 (2022-04-12 revision c9c2245c0a) [arm64-darwin21]
    RubyGems : 3.1.6
        Host : macOS 12.5.1 (21G83)
       Xcode : 14.1 (14B47b)
         Git : git version 2.37.1 (Apple Git-137.1)
Ruby lib dir : /Users/username/.rbenv/versions/2.7.6/lib
Repositories : trunk - CDN - https://cdn.cocoapods.org/

Installation Source

Executable Path: /Users/username/.rbenv/versions/2.7.6/bin/pod

Plugins

cocoapods-deintegrate : 1.0.5
cocoapods-plugins     : 1.0.0
cocoapods-search      : 1.0.1
cocoapods-trunk       : 1.6.0
cocoapods-try         : 1.2.0

Project that demonstrates the issue

https://github.com/jaxdesmarais/TestingInteroperability