[question] How to use create-exe for my game?

[paulocoutinhox]

Summary

Hi,

Im reading your article about universal binary format. How can i convert my open source game example to this executable?

How can i use create-exe for my game?

The .wasm file if here:
https://github.com/nativium/nativium-game/actions/runs/2847623683

Or attached:
nativium.wasm.zip

Today im getting error:

paulo ~/Downloads/wasmer  $ wasmer create-exe -o my-exe nativium.wasm
Compiler: cranelift
Target: aarch64-apple-darwin
Format: Symbols
Using libwasmer file: /Users/paulo/.wasmer/lib/libwasmer.a
Using path `/Users/paulo/.wasmer/lib/libwasmer.a` as libwasmer path.
✔ Native executable compiled successfully to `my-exe`.
paulo ~/Downloads/wasmer  $ ./my-exe                                 
Error getting WASI imports!
Error len: `41`
The WASI version could not be determined

[jcaesar]

The binary may be architecture-independent, but it still depends on the environment it was compiled for (which is the specific environment provided by nativium.js from the same tar). You can have a look at this with

$ wasmer inspect release/wasm/nativium.wasm
Type: wasm
Size: 978.7 KB
Imports:
  Functions:
    "a"."a": [] -> [I32]
    "a"."b": [I32] -> []
    "a"."c": [I32] -> []
    "a"."d": [I32] -> []
    "a"."e": [I32, I32, I32] -> []
    "a"."f": [I32, I32, I32] -> [I32]
…

This looks to be a minified and recent version of the emscripten environment, which isn't supported by wasmer. (As indicated by the fact that it's looking for WASI.)

In general, I wouldn't expect to be able to compile and run arbitrary things with WASM. Games are on the more difficult side. Experimental support for GUIs exists, but iirc no sound. If you want to make a standalone version of a game that originally targets the web, using electron or tauri instead of wasmer might be a more walkable path.