Enable building with the Swift Linux SDK

[t089]

This adds support for compiling against the Swift Linux SDK.

Motivation and Context

Building portable mcp servers for linux is great.

How Has This Been Tested?

Used this patch to build, compile and deploy a stdio mcp server on linux.

Breaking Changes

No.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

I think with this change we could remove the !os(Linux) in Package.swift which anyhow does make much sense in the scope of cross-compilation.

[mattt]

Hi @t089. Thanks for opening this PR! Sorry for not responding sooner.

I previously opened #63, which I believe makes equivalent changes. My blocker there was not having a way to provide test coverage. Can you think of a way to make that work?

[t089]

@mattt Ah, yes, sorry didn't see this before. I've added a CI step that builds the project using the Static Linux SDK. It is reusing work from this PR: swiftlang/github-workflows#142

[t089]

I See that you tried to run tests with the musl SDK. Yes, that is not supported. I think we can for now only enable the "building" part. I would say this is fine, as we are testing on linux in the other CI job.

[mattt]

Oh hey, CI is passing. Nice work, @t089!

Anything else to do here? Or is this ready to merge?

Edit for simultaneous response 😂

I See that you tried to run tests with the musl SDK. Yes, that is not supported. I think we can for now only enable the "building" part. I would say this is fine, as we are testing on linux in the other CI job.

I agree. More important to get this into the hands of folks with assurance that things at least build, than to get full test coverage from the jump.

[t089]

fine with me!

[mattt]

Awesome. Thanks again for your help with this, @t089! I'll cut a new patch release now.

[mattt]

This is now live in 0.10.1 🎉