build-kicad-target.sh swaps emsdk's wasm-opt/wasm-emscripten-finalize for
no-op stubs (real binaries preserved as *.real) so emcc skips in-link
asyncify — intended for the CONTAINER emsdk, but a host-mode run left the
host tools/emsdk stubbed (since Jun 9). The stub fakes --version and exits 0,
so every local build's host-side finalize/asyncify/-O2 "succeeded" while
doing nothing: output wasm shipped non-asyncified and aborts at boot with
"asyncify_stop_unwind is not a function" (and stayed 122M vs the correct
187M). get-wasm-opt.sh and apply-finalize.sh now prefer the *.real binary
whenever it exists, making the resolution immune to a stubbed emsdk.
Found while validating the CI e2e fix: pcbnew.wasm built this morning could
not boot in any browser. Local artifacts built since Jun 9 may need their
postprocess re-run (apply-finalize.sh + apply-asyncify.sh).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Three orchestration fixes, validated end-to-end on the Hetzner ccx53
(run 27280051992, 1h14m41s vs 4h05m baseline, e2e identical):
- docker-compose CPU/memory caps were hardcoded to dev-Mac defaults
(10 CPUs / 32G); now env-tunable via KICAD_DOCKER_CPUS/KICAD_DOCKER_MEM
(CI exports nproc/110G — the 32-core runner was compiling on 10 cores).
- docker/build.sh: split build_app into compile_app (container) +
postprocess_app (host-side dyncall shims + finalize + asyncify + -O2)
and added KICAD_PIPELINE=1 mode that overlaps each tool's host-side
wasm-opt with the next tool's container compile (max 2 concurrent
postprocesses — pcbnew -O2 peaks ~34G RSS). Also: comma-separated app
lists for cheap pipeline repros.
- get-wasm-opt.sh: Binaryen default 121 -> 130 (fixes the v121 -O2 lock
convoy, ~9x) and BINARYEN_BUILD_FROM_SOURCE=1 support: the official
x86_64-linux release tarballs (Alpine/musl, no LTO, assertions on) run
asyncify 4x slower than a stock gcc -O3+LTO build with sha256-identical
output; self-build takes ~5 min and is instantly repaid.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Emscripten 4.x removed dynCall_* WASM exports, breaking asyncify
rewind through indirect calls (modal dialogs, event handlers).
Generate JS shims that track Asyncify.exportCallStack and register
in wasmExports so doRewind can find them.
Also fixes empty callback functions ((() => {})) generated by
Emscripten 4.x + pthreads for HTML5 events, pthread entry,
sighandler, async timer, and main loop callbacks.
Build pipeline improvements:
- Stub wasm-opt/finalize in Docker (RAM limits), run on host
- Add setup-emsdk.sh for reproducible Emscripten setup
- Simplify env.sh and version management
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Groups cached build tools (binaryen) with other build artifacts.
The build-wasm/ directory is already gitignored via build-*/ pattern.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Move asyncify from Docker to host to avoid memory issues
- Auto-download Binaryen v121 (v125 has regression bug)
- Use -O1 for debug builds (V8 local count limit)
- Remove asyncify flags from linker (handled by wasm-opt)
- Document two-phase build in build.md
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
