AL1012: 'arm64' is not a valid setting for option 'platform'

Describe the bug

When building a project:

• Using Visual Studio
• It has localized resources
• It targets an arm64 platform

This error happens:

AL1012: ‘arm64’ is not a valid setting for option ‘platform’

To Reproduce

https://github.com/ewerspej/dotnet-maui-bug-repro-ios-arm64

This comes from: https://github.com/xamarin/xamarin-macios/issues/16193

This is an iOS project, and it might be easier to create a sample project using this stackoverflow post with the same problem: https://stackoverflow.com/questions/71378075/publish-to-arm64-not-working-when-cultured-resx-file-added

Exceptions (if any)

AL1012: ‘arm64’ is not a valid setting for option ‘platform’

Further technical details

A binlog is available here: https://github.com/ewerspej/dotnet-maui-bug-repro-ios-arm64/blob/main/bug-ios-arm64/bug-ios-arm64_Debug_AnyCPU_net7.0-ios_Build_2022-10-10T09_34_03.0519455%2B02_00.zip

Version: .NET 7.0.100-rc.1.22431.12 (according to https://github.com/xamarin/xamarin-macios/issues/16193).

Analysis

(copied from https://github.com/xamarin/xamarin-macios/issues/16193#issuecomment-1273296180)

I think I know what’s going on.

When building using either VSMac or the command line (either from Windows or Mac), the MSBuildRuntimeType property is set to Core.

as a result, the default value for GenerateSatelliteAssembliesForCore is true:

<GenerateSatelliteAssembliesForCore Condition=" '$(GenerateSatelliteAssembliesForCore)' == '' and '$(MSBuildRuntimeType)' == 'Core' ">true</GenerateSatelliteAssembliesForCore>

Ref: https://github.com/dotnet/sdk/blob/00100960bf06cb595daba647673cd0329be896f4/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Sdk.targets#L41

Looks like this logic comes from here:

https://github.com/dotnet/sdk/commit/2506af1b3b24e53ac03bde81dbdb3f2bbead5d28

However, when building from inside Visual Studio (for Windows), the MSBuildRuntimeType property is set to Full, and thus GenerateSatelliteAssembliesForCore is not set to true, and we end up executing al.exe to generate satellite assemblies, which is wrong.

It seems to me that the problem is the logic to determine whether al.exe should be used or not, it shouldn’t depend on where MSBuild is executing, but instead what kind of project is being built.

[IgorKravchenko10]

I am trying to build my project and get this error too in Visual Studio 17.4.0 Preview 5.0 Here is the sample. I just added Translator.resx, Translator.uk.resx, Translator.ru.resx to project and now unable to compile in release mode. MauiApp1.zip

All works after adding <GenerateSatelliteAssembliesForCore>true</GenerateSatelliteAssembliesForCore> to project file.

[marcpopMSFT]

@dsplaisted let’s chat when you’re back to understand more about this.