[Bug] Apple Silicon - DllNotFoundException

[tab1887]

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2021.2.0b4 Apple Silicon
• Firebase Unity SDK version: 8.1.0
• Source you installed the SDK: .unitypackage
• Problematic Firebase Component: Auth and others
• Other Firebase Components in use: None
• Additional SDKs you are using: None
• Platform you are using the Unity editor on: Mac / MacBook Air M1
• Platform you are targeting: iOS (Any)
• Scripting Runtime: Mono (Any)

[REQUIRED] Please describe the issue here:

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)

After importing the FirebaseAuth package into an empty Unity project with the Apple Silicon Version of the Unity Editor and initializing the the module with a simple

FirebaseAuth auth = FirebaseAuth.DefaultInstance;

I get the following Exception when entering play mode:

DllNotFoundException: FirebaseCppApp-8_1_0 assembly: type: member:(null)
Firebase.AppUtilPINVOKE+SWIGExceptionHelper..cctor () (at Z:/tmp/tmp.9PHv6s9T8D/firebase/app/client/unity/proxy/AppUtilPINVOKE.cs:117)
Rethrow as TypeInitializationException: The type initializer for 'SWIGExceptionHelper' threw an exception.
Firebase.AppUtilPINVOKE..cctor () (at Z:/tmp/tmp.9PHv6s9T8D/firebase/app/client/unity/proxy/AppUtilPINVOKE.cs:137)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.AppUtilPINVOKE' threw an exception.
Firebase.AppUtil.SetLogFunction (Firebase.LogUtil+LogMessageDelegate arg0) (at Z:/tmp/tmp.9PHv6s9T8D/firebase/app/client/unity/proxy/AppUtil.cs:64)
Firebase.LogUtil..ctor () (at Z:/tmp/tmp.9PHv6s9T8D/firebase/app/client/unity/proxy/LogUtil.cs:81)
Firebase.LogUtil..cctor () (at Z:/tmp/tmp.9PHv6s9T8D/firebase/app/client/unity/proxy/LogUtil.cs:37)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.LogUtil' threw an exception.
Firebase.FirebaseApp..cctor () (at Z:/tmp/tmp.9PHv6s9T8D/firebase/app/client/unity/proxy/FirebaseApp.cs:67)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.FirebaseApp' threw an exception.
Firebase.Auth.FirebaseAuth.get_DefaultInstance () (at Z:/tmp/tmp.fXb0dO0rk8/firebase/auth/client/unity/proxy/FirebaseAuth.cs:295)
FirebaseAuthTest.Start () (at Assets/FirebaseAuthTest.cs:11)

When doing the same in the Intel version of the Unity beta then a popup appears about an untrusted developer for FirebaseCppApp-8_1_0.bundle, which can be worked around by allowing execution through the MacOs system security settings. But in the Apple Silicon version this popup does never appear.

[paulinon]

Hi @tab1887,

Could you try using an LTS version (2020.3.14f1) of the Unity editor and see if the issue persists?

[tab1887]

Hi @paulinon,

thanks for checking.
As far as I know there is currently no Unity LTS version built for Apple M1 available. They started to publish the editor for 2021.2.0a19 and now 2021.2.0b4 is the latest (most mature) version of it available.

The SDK is working fine in the Intel version of the same beta, so I believe the issue is caused by the new architecture.

To make this very clear: I'm not targeting M1 for the final build, but just using the M1 version of the editor.
(The build for iOS is even working fine - only in-editor playback fails)
Maybe the dll needs to be provided in a native M1 or universal version or something like this?

[happypepper]

Hi @paulinon , would it be possible to confirm whether this DllNotFoundException is expected behaviour on M1 version of Unity editor? Or do we just have something else misconfigured?