How to use the staticlib engine in Rust

[recmo]

Summary

I have a Rust library that calls a wasm library. Currently I include_bytes! the wasm bytecode. It is going to run on mobile devices, so reducing resources is important. I would like to statically compile and link the bytecode.

Additional details

I tried

const WASM_STATICLIB: &[u8] = include_bytes!("wasm_staticlib.o");
let store = Store::new(&Staticlib::headless().engine());
let module = unsafe { Module::deserialize(&store, WASM_STATICLIB).unwrap() };

but this panics with

wasm should be valid: CorruptedBinary("misaligned metadata")

This happens no matter if the .o file is created using Module::serialize or the wasmer CLI:

wasmer compile path/to/wasm/file.wasm --llvm --staticlib -o my_wasm.o --header my_wasm.h

[heyjdp]

Thanks for the ticket. We have a Wasmer engine refactor planned, and we will incorporate this request into Wasmer 3.x

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[ptitSeb]

This ticket seems outdated now. I close it. Feel free to re-open it if the issue is still present on curretn wasmer version.