maui: clang++ exited with code 1

Description

1>C:\Program Files\dotnet\packs\Microsoft.iOS.Sdk\16.4.7089\targets\Xamarin.Shared.Sdk.targets(1274,3): error : ld: in /Users/erichbrunner/Library/Caches/Xamarin/mtbs/builds/MauiApp1/c7d11821f579f7be20cca70bea58f9077387ac6e7fda6c0f0bf0598883d8d781/obj/Debug/net7.0-ios**/iossimulator-arm64**/linker-cache/AppCenterCrashes.a(MSACErrorReport.o), building for iOS Simulator, but linking in object file built for iOS, file ‘/Users/erichbrunner/Library/Caches/Xamarin/mtbs/builds/MauiApp1/c7d11821f579f7be20cca70bea58f9077387ac6e7fda6c0f0bf0598883d8d781/obj/Debug/net7.0-ios/iossimulator-arm64/linker-cache/AppCenterCrashes.a’ 1>C:\Program Files\dotnet\packs\Microsoft.iOS.Sdk\16.4.7089\targets\Xamarin.Shared.Sdk.targets(1274,3): error : clang: error: linker command failed with exit code 1 (use -v to see invocation) 1>Done building project “MauiApp1.csproj” – FAILED.

Steps to Reproduce

XCode

Visual Studio
Installed Workloads

Link to public reproduction project repository

https://github.com/ericbrunner/MauiClangError.git

Version with bug

maui-ios 8.0.0-preview.7.8842/8.0.100-preview.7 VS 17.7.34009.444 ios 16.4.8694-net8-p7/8.0.100-preview.7 VS 17.7.34009.444

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iPhone 14 iOS 16.1

Did you find any workaround?

No. I tried to set

<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net7.0-ios|AnyCPU'"> <RuntimeIdentifier>iossimulator-arm64</RuntimeIdentifier> </PropertyGroup> in MAUI .csproj without any working result. Taken from comments of #12124

Relevant log output

see gist of build output pane

About this issue

Original URL
State: closed
Created 10 months ago
Comments: 15 (8 by maintainers)

Most upvoted comments

There seems there’s nothing on the MAUI side we can do so we are closing this issue for now. Thanks

Interesting that the .NET MAUI team is not responsible for tooling issues with .NET MAUI. Who is responsible for such one?

ericbrunner on Aug 18, 2023

@rolfbjarne @mattleibow nonesense , that is not an AppCenter issue as can be read here on SO! But how to exclude arm64 for any iPhoneSimulator? Reopen that issue and provide a workaround to mitigate that issue.

If you want to force x64 when building in Visual Studio, add this to your project:

<PropertyGroup>
    <ForceSimulatorX64ArchitectureInIDE>true</ForceSimulatorX64ArchitectureInIDE>
</PropertyGroup>

If you’re building from the command line, you need to specify the iossimulator-x64 runtime identifier:

dotnet build /p:RuntimeIdentifier=iossimulator-x64 ...

rolfbjarne on Aug 17, 2023

You can also condition for Mac, at the top of the csproj there is a condition for windows to add the windows tfm. Just use that and swap to check for macos

mattleibow on Aug 25, 2023

<PropertyGroup>
    <ForceSimulatorX64ArchitectureInIDE>true</ForceSimulatorX64ArchitectureInIDE>
</PropertyGroup>
Can confirm that it works, but only when you place the <ForceSimulatorX64ArchitectureInIDE>true</ForceSimulatorX64ArchitectureInIDE> directive inside the PropertyGroup that only tagets the iOS debug build, otherwise the Android Emulator wouldn’t start.

Correct one is (if net7.0-ios is the TFM):
	<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net7.0-ios|AnyCPU'">
		<ForceSimulatorX64ArchitectureInIDE>true</ForceSimulatorX64ArchitectureInIDE>
	</PropertyGroup>

Might be better to put in csproj.user so it doesnt mess with debugging on mac.

alanspires on Aug 24, 2023

There seems there’s nothing on the MAUI side we can do so we are closing this issue for now. Thanks

Interesting that the .NET MAUI team is not responsible for tooling issues with .NET MAUI. Who is responsible for such one?

The underlying issue is that the AppCenter NuGet doesn’t support the ARM64 architecture in the simulator.

The answer in the SO link you posted (https://stackoverflow.com/a/73507083) says to tell Xcode to not build for ARM64 (in the simulator).

The answer I posted yesterday (https://github.com/dotnet/maui/issues/16778#issuecomment-1682434890) is the equivalent for Visual Studio: it tells Visual Studio to not build for ARM64 (in the simulator).

Both of these answers are just workarounds for the underlying problem: that the AppCenter NuGet doesn’t support ARM64 in the simulator.

@rolfbjarne ah good to know. Any idea which of the various AppCenter repos this should go to? There are quite a few: github.com/orgs/microsoft/repositories?q=appcenter&type=all&language=&sort=

Maybe this one: https://github.com/microsoft/appcenter-sdk-dotnet?

rolfbjarne on Aug 18, 2023