Just updated my project from 4.0 to 4.2, changed module path to current juce 4.2 develop repository. Xcode shows me the error
file:///Users/christian/cpp/MyProject/JuceLibraryCode/modules/juce_audio_devices/juce_audio_devices.h: warning: Missing file: /Users/christian/cpp/MyProject/JuceLibraryCode/modules/juce_audio_devices/juce_audio_devices.h is missing from working copy
I don’t use the source-code copy into the project - feature.
I see the juce_audio_devices.h directly in /Users/christian/cpp/MyProject/JuceLibraryCode