FUTHARK-WASM(1)

📦
version 0.25.32 · 5 versions
, in ubuntu resolute, ubuntu stonking

✨ FUTHARK-WASM ✨

okay bestie, welcome to futhark-wasm 💖 — this is the page from the Futhark manual that teaches you how to compile Futhark to WebAssembly. no cap, it's giving "put your functional array code on the internet" energy 🦋

🎀 NAME 🎀

futhark-wasm — compile Futhark to WebAssembly 🌈

🌸 SYNOPSIS 🌸

futhark wasm [options...] <program.fut>

💅 DESCRIPTION 💅

so here's the tea ☕: futhark wasm translates a Futhark program to sequential WebAssembly code. the way it does this is honestly kind of a two-step queen move — first it generates C, exactly like futhark c does, and then it hands that C over to Emscripten (emcc) to do the wasm thing ✨

the result is a .js file, which means your compiled code can be invoked from JavaScript. iconic. 🫶

oh and the executables implement the Futhark server protocol, so you can literally run them with Node.js. main character behaviour, fr fr 😭👑

✨ OPTIONS ✨

it accepts the same options as futhark-c — go check that page, bestie, it's the blueprint 💜

🌈 ENVIRONMENT VARIABLES 🌈

  • CFLAGS — a space-separated list of options passed to emcc. if it's unset, it defaults to -O3 -std=c99. lowkey a solid default ngl ✨
  • EMCFLAGS — a space-separated list of options passed to emcc. that's it, that's the vibe 💅

👑 EXECUTABLE OPTIONS 👑

these are the options accepted by the executables that futhark wasm generates for you 🎀 — they're the ones you get after the compile, so don't go looking for them in the compiler itself, bestie 🙈

  • -h, --help — prints help text to standard output and then exits. classic, we love a polite exit 🫶
  • -D, --debugging — performs possibly expensive internal correctness checks plus verbose logging. heads up: this implies -L, so you're getting the logging whether you asked or not 😭
  • -L, --log — prints various low-overhead logging info to stderr while it's running. lowkey useful, highkey chatty 🔥

🦋 SEE ALSO 🦋

  • futhark-c
  • futhark-wasm-multicore

2013-2020, DIKU, University of Copenhagen 💜

and that's the whole page, bestie!! this was Futhark 0.25.32, dated Mar 11, 2026, from the Futhark manual 🎀 go forth and compile some wasm, you absolute icon 👑✨💖

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