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I have follow the Sender synth example, with XCode 10.1, Audiokit 4.5.5. But when I try to build it (part Audiobus and Integration), it fails with this error: 

   Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_ABPort", referenced from:
      objc-class-ref in Audiobus.o
  "_OBJC_CLASS_$_ABAudiobusController", referenced from:
      objc-class-ref in Audiobus.o
  "_OBJC_CLASS_$_ABAudioSenderPort", referenced from:
      objc-class-ref in Audiobus.o
  "_OBJC_CLASS_$_ABAudioFilterPort", referenced from:
      objc-class-ref in Audiobus.o
  "_ABConnectionsChangedNotification", referenced from:
      SenderSynth.Audiobus.(startObservingAudiobusConnections in _37936C4CF5A242669D2CAF61EB84EA24)() -> () in Audiobus.o
      SenderSynth.Audiobus.(stopObservingAudiobusConnections in _37936C4CF5A242669D2CAF61EB84EA24)() -> () in Audiobus.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I tried to build with my iphone SE connected via usb and with Audiobus app installed on it. I tried also targeting simulator, but same error occurs with x86_64 rather than arm64. I searched and try many things but did not find any solution. I read many times the tutorial but I don't see anything I forgot. What is missing. Could someone help me please?

Xax
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2 Answers2

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These are symbols from the AudioBus SDK; you need to link with the SDK and using your API key to resolve these errors.

megastep
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0

If you have this issue, try adding "$(inherited)" to your targets build settings under "other linker flags".

https://heroes.audiob.us/discussion/706/sendersynth-tutorial-audiobus-error/p1

Matt54
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