Files
Tyler Cloutier 78d6b6f7dd Update NativeAOT-LLVM infrastructure to current ABI (#4515)
## Summary

- Update the experimental NativeAOT-LLVM build path
(`EXPERIMENTAL_WASM_AOT=1`) to include all host function imports from
ABI versions 10.0 through 10.4
- Fix the compiler package reference to work on both Windows x64 and
Linux x64 (was hardcoded to Windows only)
- Add a CI smoketest to verify AOT builds work on Linux x64

## Context

See #4514 for the full writeup on the C# AOT situation. The
`wasi-experimental` workload that all C# module builds depend on is
deprecated and removed from .NET 9+. NativeAOT-LLVM is the recommended
path forward for ahead-of-time compilation of C# to WebAssembly.

The existing NativeAOT-LLVM support (added by RReverser in #713) was
stale: missing imports added since then and a Windows-only package
reference.

## Changes

**`SpacetimeDB.Runtime.targets`:**
- Add 10 missing `WasmImport` declarations across spacetime_10.0 through
10.4
- Replace `runtime.win-x64.Microsoft.DotNet.ILCompiler.LLVM` with
`runtime.$(NETCoreSdkPortableRuntimeIdentifier).Microsoft.DotNet.ILCompiler.LLVM`
so it resolves correctly on Linux x64 as well
- Use explicit version strings instead of the `$(SpacetimeNamespace)`
variable

**`ci.yml`:**
- Add AOT build smoketest step in the `csharp-testsuite` job

## Test plan

- [x] CI smoketest passes: `EXPERIMENTAL_WASM_AOT=1 dotnet publish -c
Release` builds successfully on Linux x64
- [ ] Existing C# tests continue to pass (no changes to the default
interpreter path)

---------

Signed-off-by: Ryan <r.ekhoff@clockworklabs.io>
Co-authored-by: Ryan <r.ekhoff@clockworklabs.io>
Co-authored-by: Jason Larabie <jason@clockworklabs.io>
Co-authored-by: John Detter <4099508+jdetter@users.noreply.github.com>
2026-04-21 21:47:16 +00:00
..
2026-01-23 21:28:24 +00:00
2025-08-12 18:20:58 +00:00
2023-12-21 06:08:41 -06:00
2026-03-20 21:53:51 +00:00
2024-08-28 11:13:33 -07:00

SpacetimeDB C# SDK

Overview

This repository contains the C# and Unity client SDKs for SpacetimeDB. These SDKs contain all the tools you need to build native clients for SpacetimeDB modules using C#.

Documentation

The Unity SDK uses the same code as the C# SDK. You can find the documentation for the C# SDK in the C# SDK Reference. For a guided tutorial, see the C# SDK Quickstart.

There is also a comprehensive Unity tutorial/demo available:

Internal developer documentation

See DEVELOP.md.