Enviroment setup

TO compline this demo, you must install these packages listed below.

zig

Install zig.

Install zig on Fedora 34 Using dnf

sudo dnf makecache --refresh

After updating yum database, We can install zig using dnf by running the following command:

sudo dnf -y install zig

Note : if you are using other operating system Go to ziglang.org and follow the instructions.

Wasmtime

You will find wasmtime at wasmtime.dev

Zig Code

const std = @import("std");

fn fibonacci(index: u32) u32 {
    if (index < 2) return index;
    return fibonacci(index - 1) + fibonacci(index - 2);
}

pub fn main() !void {
    const stdout = std.io.getStdOut().writer();
    var x: u32 = 7;

    try stdout.print("fibonacci of {d} ", .{x});
    try stdout.print("is: {d} \n ", .{fibonacci(x)}  );
}

Compiling zig code

1. compile using zig

zig run main.zig

1. compile to WASM using the following command:

zig build-exe main.zig -target wasm32-wasi

1. file main.wasm

file main.wasm

1. wasm runtime

wasmtime main.wasm

final result.