zig-cli/build.zig

const std = @import("std");

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

    const cli_mod = b.addModule("cli", .{ .root_source_file = .{ .path = "cli.zig" } });
    const demo_exe = b.addExecutable(.{
        .name = "cli-demo",
        .root_source_file = .{ .path = "demo.zig" },
        .optimize = optimize,
        .target = target,
        .link_libc = true,
    });
    demo_exe.root_module.addImport("cli", cli_mod);

    // compile
    const compile_step = b.step("compile", "Compile demo executable");
    compile_step.dependOn(&demo_exe.step);

    // install
    b.installArtifact(demo_exe);

    // run test
    const run_demo_exe1 = b.addRunArtifact(demo_exe);
    run_demo_exe1.addArgs(&[_][]const u8{ "-e", "4" });
    const run_demo_exe2 = b.addRunArtifact(demo_exe);
    run_demo_exe2.addArgs(&[_][]const u8{"subexample"});
    const unit_tests = b.addTest(.{
        .root_source_file = .{ .path = "cli.zig" },
        .target = target,
        .optimize = optimize,
    });
    const run_unit_tests = b.addRunArtifact(unit_tests);
    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&run_unit_tests.step);
    test_step.dependOn(&run_demo_exe1.step);
    test_step.dependOn(&run_demo_exe2.step);
}