iOS Error: clang++ exited with code 1:

Jassim Al Rahma 26

Hi,

Why i am suddenly getting this error:

Xamarin.Shared.Sdk.targets(3,3): Error: clang++ exited with code 1:
Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_OSInAppMessage", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageClickEvent", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageClickResult", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageDidDismissEvent", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageDidDisplayEvent", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageTag", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageWillDismissEvent", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$_OSInAppMessageWillDisplayEvent", referenced from:
      objc-class-ref in registrar.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

How can I fix it please?

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-01T04:08:30.8833333+00:00
For further investigation, could you please provide the following information?

What's the MAUI version?

Do you pair to Mac? What's the Xcode Version? Did you update Xcode then get this error?

Is there a class named "registrar" in your project?

Do you run the App on your physical device? Which device did you test on? And what's the iOS version? Do you specify RuntimeIdentifier in your project file?

Please try to change the linker to Link Framework Only then check if there are any differences.
Jassim Al Rahma 26 Reputation points

2023-09-13T18:07:42.6733333+00:00

What's the MAUI version?

net7.0-android;net7.0-ios;net7.0-maccatalyst

Do you pair to Mac? What's the Xcode Version? Did you update Xcode then get this error?

I ma connecting my device directly to my MacBook. Ths xcode version is 14.3.1 (14E300c)

Is there a class named "registrar" in your project?

No

Do you run the App on your physical device? Which device did you test on? And what's the iOS version? Do you specify RuntimeIdentifier in your project file?

I was testing perfectly on iOS 12 and now I am not able to test on the same device as well as all other iOS devices. the

Please try to change the linker to Link Framework Only then check if there are any differences.

I check it but still getting the same error.
Adarsha Almane Shripadabhat 0 Reputation points

2023-09-14T04:15:25.57+00:00

I am facing same issue on adding twilio nuget package. Kindly help on the same
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-14T05:35:48.76+00:00

This error point to the native iOS library your app references, it might be in a third-party package you are using or in a binding library, and this error means null object/event in iOS SDK. You could try to find which library includes OSInAppMessage，OSInAppMessageClickEvent ,OSInAppMessageDidDismissEvent and the other methods, then remove the library to check if the issue still exists. (In addition, Link None is correct)
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-14T05:37:04.6933333+00:00

hi @Adarsha Almane Shripadabhat , which NuGet Package do you use?
Jassim Al Rahma 26 Reputation points

2023-09-14T06:49:21.79+00:00

This is my BuildBuildLogiOS.pdf Log
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-14T08:20:51.2166667+00:00

Hello,

Please see the Xamarin.Firebase.iOS.Core , FirebaseAnalytics package and others, which are available for .net6-iOS, but your project targets NET7. Please try to set.NET 6 for your project.

And there is a MT7091 error, please delete the nuget cache (typically C:\Users\{YourUser}\.nuget\packages)

(Refer to Windows: files in the .nuget cache replaced with empty files · Issue #18348 · xamarin/xamarin-macios (github.com))

Best Regards,

Wenyan Zhang

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Jassim Al Rahma 26 Reputation points

2023-09-14T11:50:34.83+00:00

I am using Mac and cannot find the .net cache folder.

also downgrading to NET6 means downgrading a lot of packages as well as everything was working on .NET7 till before the latest VS for Mac update.

Any other solution with lesser changes?
Jassim Al Rahma 26 Reputation points

2023-09-14T12:36:08.8366667+00:00

I remove all the Firebase nugets but still have the same error.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-15T02:32:48.29+00:00

I double-check the log, you also should remove OneSignalSDK.DotNet, Sentry.Bindings.Cocoa.
Jassim Al Rahma 26 Reputation points

2023-09-15T07:41:00.35+00:00

but that means I will lose the push notifications.

my question is why everything was working till the last update of VS for Mac and my app is also published on App Store
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-15T08:12:15.17+00:00

If so, there are two suggestions. You could try to turn to the earlier versions of Visual Studio for Mac at https://visualstudio.microsoft.com/vs/older-downloads/.

Note that Visual Studio for Mac is on the Modern Lifecycle, so only the latest version is supported. Bug fixes and feature updates will target only the latest version.

Or you have to replace the dependency with another library.
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Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-27T01:37:50.8533333+00:00

May I know if you have got any chance to check my answer? I am glad to help if you have any other questions.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-29T08:14:54.48+00:00

I added there GitHub Repo link, please view the updated answer.

1 answer

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,176 Reputation points Microsoft Vendor

2023-09-15T08:04:38.2166667+00:00

Hello,

I search for the OSInAppMessage, OSInAppMessageClickEvent methods from all the third-party libraries you used, the error is caused by the null reference in OneSignalSDK.DotNet SDK.

And they list their GitHub Repo, you could get further help from them.

(I saw there is a known issue in their issue list, third-party tools are not supported on Q&A)

Best Regards,

Wenyan Zhang

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Marco Erlwein 0 Reputation points

2023-09-29T14:34:01.54+00:00

I have the same error, creating a new Maui Blazor type project, installing the OneSignalSDK.Donet component and then compiling, I have my Visual Studio paired with a MAC with XCode 14.2 and I have tried compiling in a simulator as well as connecting my iPhone.
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iOS Error: clang++ exited with code 1:

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