Support for Apple M1 silicon

Description

The library doesn’t support the Apple M1 silicon (ARM64).

The .NET version is 6.0.100-rc.2.21505.57 which already supports this architecture.

The exception call stack is:

System.DllNotFoundException: Failed to load the librdkafka native library.
   at Confluent.Kafka.Impl.Librdkafka.TrySetDelegates(List`1 nativeMethodCandidateTypes)
   at Confluent.Kafka.Impl.Librdkafka.LoadOSXDelegates(String userSpecifiedPath)
   at Confluent.Kafka.Impl.Librdkafka.Initialize(String userSpecifiedPath)
   at Confluent.Kafka.Producer`2..ctor(ProducerBuilder`2 builder)
   at Confluent.Kafka.ProducerBuilder`2.Build()

Maybe related to https://github.com/edenhill/librdkafka/issues/3546

How to reproduce

1. Create a .NET 6 RC project and install the Confluent.Kafka package (1.8.2) in a Mac with M1 silicon
2. Create a producer instance via ProducerBuilder
3. Run the solution

Checklist

Please provide the following information:

• Confluent.Kafka nuget version: 1.8.2
• Operating system.

[Minorsonek]

Any ETA for arm/M1 build? It’s already half of Q1, is it going to happen or is it delayed?

[edenhill]

We’re looking to add M1 builds during Q1.

Den mån 6 dec. 2021 kl 15:14 skrev Matt Howlett @.***>:

@edenhill https://github.com/edenhill - any plans on this for librdkafka.redist?

I think what we ideally want is a way for you to add a candidate librdkafka binary to the set included in librdkafka.redist simply by referencing an additional nuget package. Then we, or anyone, could make and distribute librdkafka nuget packages for any platform. I think this might not have been feasible in the past, but it might be worth looking into this again.

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