wasi2ic

wasi2ic is a tool to convert WebAssembly System Interface (WASI) dependent Wasm module to run on the Internet Computer (IC) computer.

Compiling wasi2ic

• Clone the https://github.com/wasm-forge/wasi2ic:

  git clone https://github.com/wasm-forge/wasi2ic

• Enter the wasi2ic folder

• Compile the project with cargo build and copy the tool to some executable path or alternatively use cargo install --path ., but note that the project is still in the early development.

Usage

To use this tool, navigate to the directory where the WASI-dependent project resides, and run the command:

  wasi2ic <input-wasm-file> <output_wasm_file>

This will read the old Wasm file and create a new Wasm file with the WASI dependencies removed.

NOTE

The tool requires that the polyfill implementation is present in your Wasm binary, to include the polyfill implementation into your canister project you need to add the dependency:

cargo add --git https://github.com/wasm-forge/ic-wasi-polyfill

This will create the polyfill methods in your .wasm file, which are needed for wasi2ic.

Also add the call to the init of the polyfill, example:

#[ic_cdk::init]
fn init() {
    unsafe {
        ic_wasi_polyfill::init(&[0u8; 32], &[]);
    }
}

NOTE2

The polyfill library is still in early development, and not all methods are implemented. Feel free to review its current state before use.

Related repositories

Repository	Description
Polyfill library	Polyfill library implementing the low-level WASI calls.
stable-fs	Simple file system implementation based on the stable structures implementing the backend of the polyfill library.
demo1	Basic demonstration of creating a "Hello World" application using Rust and running it on the Internet Computer.
demo2	Basic demonstration of creating a "Hello World" application using C++ and running it on the Internet Computer.
demo3	Example of running the Sqllite server on the Internet Computer.
demo4	Example of running the Boa JavaScript interpretter on the Internet Computer.