Zig & C library

README.md

Zig example to link with system library

Make sure you have libuuid installed on your system, precisely - it's "development" version. It is usually in util-linux package, so install util-linux-dev or the like.

I'm using Guix, if you do too - run this:

$ guix shell -m manifest.scm

Then build a project using standard Zig's facility:

$ zig build

Run it:

$ zig-out/bin/uuidgen

build.zig

const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    const uuidgen = b.addExecutable(.{
        .name = "uuidgen",
        .root_source_file = b.path("main.zig"),
        .target = target,
        .optimize = optimize,
    });
    uuidgen.linkLibC();
    uuidgen.linkSystemLibrary("uuid");

    b.installArtifact(uuidgen);
}

main.zig

const std = @import("std");

const uuid = @cImport({
    @cInclude("uuid/uuid.h");
});

pub fn main() !void {
    var v4: [16]u8 = undefined;
    // SEE: https://linux.die.net/man/3/uuid_generate
    uuid.uuid_generate_random(v4[0..]);

    std.debug.print("v4: {x}\n", .{v4});
}

manifest.scm

(import
  (gnu packages linux)
  ;; (gnu packages zig-xyz)
  (gnu packages zig)
  (guix profiles))


(packages->manifest
  (list
    (list util-linux "lib")  ; libuuid
    zig-0.14))
    ;; zig-zls))