Supporting Apple Silicon M1 ARM Architecture

[timdinh]

We get the following error when issuing the command dotnet lambda on Apple M1 machine

Failed to load /usr/local/share/dotnet/shared/Microsoft.NETCore.App/3.1.20/libhostpolicy.dylib, error: dlopen(/usr/local/share/dotnet/shared/Microsoft.NETCore.App/3.1.20/libhostpolicy.dylib, 0x0001): tried: '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/3.1.20/libhostpolicy.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/local/lib/libhostpolicy.dylib' (no such file), '/usr/lib/libhostpolicy.dylib' (no such file)
An error occurred while loading required library libhostpolicy.dylib from [/usr/local/share/dotnet/shared/Microsoft.NETCore.App/3.1.20]

The machine has the following dotnet SDKs and runtimes installed

.NET SDK (reflecting any global.json):
 Version:   6.0.100
 Commit:    9e8b04bbff

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  12.0
 OS Platform: Darwin
 RID:         osx-arm64
 Base Path:   /usr/local/share/dotnet/sdk/6.0.100/

Host (useful for support):
  Version: 6.0.0
  Commit:  4822e3c3aa

.NET SDKs installed:
  3.1.414 [/usr/local/share/dotnet/sdk]
  5.0.402 [/usr/local/share/dotnet/sdk]
  6.0.100 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.20 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.11 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.20 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.11 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download

Describe the Feature

Add support so that the command dotnet lambda run without error on Apple M1 machine

Is your Feature Request related to a problem?

see above

Describe alternatives you've considered

There are no solutions that we know of

Additional Context

We have an ASPNET Core WebApi solution that we are publishing as a serverless to AWS.

Environment

• MacOS Monterey

• dotnet 6.0

• Apple M1 arm64 architect

• 👋 I may be able to implement this feature request

• ⚠️ This feature might incur a breaking change

---

This is a 🚀 Feature Request

[timdinh]

I was able to follow the instruction at https://github.com/aws/aws-extensions-for-dotnet-cli/blob/master/CONTRIBUTING.md and create a working version. Thanks.

[normj]

I have tested the Amazon.Lambda.Tools in my Apple M1 machine and it works for me but I think that is because I have just .NET 6 installed. I suspect having the 3.1 SDK also installed is getting things confused because currently the shipped tool is targeting .NET Core 2.1 and the 3.1 is the closest match and is being used.

I'm in the process of pushing out a new version of the tool that will target .NET Core 3.1 and .NET 6 which should mean on your machine it will pick the .NET 6 version.

[ashishdhingra]

Waiting on .NET 6 target support on AWS .NET CLI extensions.

[normj]

I have pushed version 5.3.0 of the Lambda tool that adds a .NET 6 target framework for build. This should unblock M1 users with only the ARM version of .NET 6 installed.

[ashishdhingra]

I have pushed version 5.3.0 of the Lambda tool that adds a .NET 6 target framework for build. This should unblock M1 users with only the ARM version of .NET 6 installed.

@timdinh Please upgrade to latest version and verify if the issue is resolved.

[timdinhdotcom]

@normj @ashishdhingra Thanks guys, version 5.3.0 works now.

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