Compile virgil code to WASM

[kalwalt]

I'm trying to compile some virgil code to WASM, i looked at the mandelbrot example and i would playing around with it. As stated in the Readme https://github.com/titzer/virgil?tab=readme-ov-file#supported-targets WASM is supported.
i run w3c-wasm Code.v3
but as a result v3c-wasm: command not found
Note that i have virgil/bin and virgil/bin/dev in PATH, i have also run aeneas bootstrap.
Maybe i missed som steps?
Anyway i can produce a wasm file with the wasi backend with the v3c-wasi command but it can not be load in a browser.

[kalwalt]

Ok i think i get it, you need to run v3c -target=wasm YourCode.v3 this is correct?

[kalwalt]

Note for other virgil users exporting to target wasm: It's better to enlarge the heap memory otherwise you can receive unreachable code, use the command:
v3c -target=wasm -heap-size=500m YourCode.v3

[titzer]

Yeah, that's a good tip. The wasm target is also a little less user-friendly in that any safety violations that would normally print a stack traces just trap (typically with unreachable). I.e. there isn't a nice source-level error message.

I should really get around to writing some tutorial pages on how to use the various targets.

[kalwalt]

@titzer i saw that you write a new tutorial for wasm, many thanks for this! I think it will help many potential users...

[titzer]

That's correct. The wasm code generator is stable, but none of the platform targets are stable enough to have graduated from bin/dev/ to bin/ yet.

[kalwalt]

Thank you, this make sense. 🙂