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Jorijn van der Graaf 8892154b28 Some checks failed CI / build-test-release (push) Failing after 7m15s Details linting		2026-07-23 01:24:42 +02:00
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main.cpp	linting	2026-07-23 01:24:42 +02:00
project.cpp	linting	2026-07-23 01:24:42 +02:00
README.md	V2: WASI, -r flag, CI pipeline, examples & tests cleanup	2026-04-28 23:24:46 +02:00
serve.sh	SPDX license update	2026-07-22 18:19:17 +02:00

WASI

Build a C++26 program for the wasm32-wasi target and run it in a browser.

Prerequisites

wasi-libc, wasi-libc++, wasi-libc++abi (Arch packages — provide /usr/share/wasi-sysroot/, which crafter-build finds automatically). Other distros: install the WASI SDK and set cfg.sysroot in project.cpp.

crafter-build

Output lands in bin/wasi-hello-wasm32-wasip1-native/:

wasi-hello.wasm — the compiled module
index.html + runtime.js — a minimal in-browser WASI shim, dropped in by EnableWasiBrowserRuntime(cfg) in project.cpp. Stdout goes to the browser console.

./serve.sh                  # any static file server works

Open http://localhost:8080/. The string from main() shows up in the DevTools console.

If you don't need the browser, drop the EnableWasiBrowserRuntime(cfg) line from project.cpp and run the .wasm directly:

wasmtime bin/wasi-hello-wasm32-wasip1-native/wasi-hello.wasm