Wwise 2018.1.6 Unity Building for PC on Mac fails

Question

I am trying to build a PC player on a Mac computer for Unity and Wwise 2018.1.6. However, the initialization settings script won't compile due to the platform identification.

On AkWindowsSettings.cs, line 47 it says

       public override void CopyTo(AkPlatformInitSettings settings)
      {
#if UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN || UNITY_WSA
         settings.eAudioAPI = (AkAudioAPI)m_AudioAPI;
         settings.bGlobalFocus = m_GlobalFocus;       
#endif
      }

So on Mac, if I set Unity target platform to PC, the UNITY_STANDALONE_WIN condition would be triggered, and the variables eAudioAPI and bGlobalFocus can't be find, because both of them belong to 

AkPlatformInitSettings_Windows.cs, which is not compiled on a Mac.

So instead of commenting out those two lines(which might cause some bugs), are there any alternative solutions?

BTW it doesn't make sense that I can't upload a local picture here. Wwise forum should include this feature.