# W-020 Status

status: done
task: 建立 Emscripten 工具链

## Evidence

- Environment: `tools/web/emscripten-env.sh`
- Smoke runner: `tools/web/check-emscripten.sh`
- Source: `web/engine/emscripten_smoke.c`
- Golden: `tests/golden/W-020/toolchain.json`

The fixed toolchain is Emscripten 3.1.69. The smoke runner builds both a
single-thread and pthread WASM module with ES module, Worker environment,
memory growth and filesystem flags.

## Verification

```text
tools/web/check-emscripten.sh  # emscripten-toolchain-ok
```