mohitmishra786/low-level-dev-skills

zig-build-system

Zig build system skill for multi-file Zig projects.

소스 보기

사용 방법

  1. 설치 명령을 복사하고 자신의 에이전트 환경에 설치하기 전에 소스 패키지를 확인하세요.
  2. 필요한 도구, 인증 정보, 지원 환경은 원본 문서에서 확인하세요.
  3. 입력과 원하는 산출물을 설명하고 출처와 결과를 대조하세요.
npx skills add https://github.com/mohitmishra786/low-level-dev-skills --skill zig-build-system

시작 전 확인

  • 설치에는 모델 구독, API 한도, 파일 접근 권한이 포함되지 않습니다.
  • 별점 수와 설치 수는 활동 지표이며 독립적인 품질·보안 검증이 아닙니다.
원본 Skill 문서

원본 저장소의 제목, 예시, 코드, 표, 링크, 이미지를 유지해 표시합니다.

Zig Build System

Purpose

Guide agents through writing build.zig files: executables, libraries, C source integration, build options, test configuration, and build.zig.zon package manifests.

Triggers

  • "How do I set up a build.zig file?"
  • "How do I add a C library to a Zig project?"
  • "How do I define build-time options in Zig?"
  • "How do I run Zig tests with zig build test?"
  • "What is build.zig.zon and how do I use it?"
  • "How do I add a Zig package dependency?"

Workflow

1. Project initialization

bash
# Initialize a new project
mkdir myproject && cd myproject
zig init          # creates src/main.zig and build.zig

# Build
zig build

# Run
zig build run

# Test
zig build test

2. build.zig structure

zig
const std = @import("std");

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

    // Executable
    const exe = b.addExecutable(.{
        .name = "myapp",
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });

    // Install step (zig build → copies to zig-out/bin/)
    b.installArtifact(exe);

    // Run step (zig build run)
    const run_cmd = b.addRunArtifact(exe);
    run_cmd.step.dependOn(b.getInstallStep());
    if (b.args) |args| {
        run_cmd.addArgs(args);
    }
    const run_step = b.step("run", "Run the app");
    run_step.dependOn(&run_cmd.step);

    // Test step (zig build test)
    const unit_tests = b.addTest(.{
        .root_source_file = b.path("src/main.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);
}

3. Libraries

zig
// Static library
const lib = b.addStaticLibrary(.{
    .name = "mylib",
    .root_source_file = b.path("src/mylib.zig"),
    .target = target,
    .optimize = optimize,
});
b.installArtifact(lib);

// Shared library
const shared_lib = b.addSharedLibrary(.{
    .name = "mylib",
    .root_source_file = b.path("src/mylib.zig"),
    .target = target,
    .optimize = optimize,
    .version = .{ .major = 1, .minor = 0, .patch = 0 },
});
b.installArtifact(shared_lib);

// Link library into executable
exe.linkLibrary(lib);

4. Adding C source files

zig
// Single C file
exe.addCSourceFile(.{
    .file = b.path("src/legacy.c"),
    .flags = &.{ "-std=c11", "-Wall", "-Wextra" },
});

// Multiple C files
exe.addCSourceFiles(.{
    .files = &.{
        "src/a.c",
        "src/b.c",
        "src/c.c",
    },
    .flags = &.{ "-std=c11", "-O2" },
});

// Include directories
exe.addIncludePath(b.path("include/"));
exe.addIncludePath(.{ .cwd_relative = "/usr/local/include" });

// System libraries
exe.linkSystemLibrary("curl");
exe.linkSystemLibrary("ssl");
exe.linkLibC();  // link libc (required if calling C stdlib)

5. Build-time options

zig
pub fn build(b: *std.Build) void {
    // Boolean option
    const enable_logging = b.option(
        bool,
        "logging",
        "Enable debug logging",
    ) orelse false;

    // Enum option
    const Backend = enum { opengl, vulkan, software };
    const backend = b.option(
        Backend,
        "backend",
        "Rendering backend",
    ) orelse .opengl;

    // Integer option
    const max_connections = b.option(
        u32,
        "max-connections",
        "Maximum concurrent connections",
    ) orelse 64;

    // Pass to Zig code as compile-time constant
    const options = b.addOptions();
    options.addOption(bool, "enable_logging", enable_logging);
    options.addOption(Backend, "backend", backend);
    options.addOption(u32, "max_connections", max_connections);

    exe.root_module.addOptions("build_options", options);
}

In Zig source:

zig
const build_options = @import("build_options");

pub fn main() void {
    if (build_options.enable_logging) {
        std.debug.print("Logging enabled\n", .{});
    }
}
bash
# Pass options on command line
zig build -Dlogging=true -Dbackend=vulkan -Dmax-connections=256

6. Module system

zig
// Create a module (reusable across targets)
const mymodule = b.addModule("mymodule", .{
    .root_source_file = b.path("src/mymodule.zig"),
});

// Use module in executable
exe.root_module.addImport("mymodule", mymodule);

// Share module between exe and tests
const utils = b.addModule("utils", .{
    .root_source_file = b.path("src/utils.zig"),
});
exe.root_module.addImport("utils", utils);
unit_tests.root_module.addImport("utils", utils);

In Zig source:

zig
const utils = @import("utils");
const mymodule = @import("mymodule");

7. Package management with build.zig.zon

zig
// build.zig.zon
.{
    .name = "myapp",
    .version = "0.1.0",
    .minimum_zig_version = "0.13.0",

    .dependencies = .{
        .zig_clap = .{
            .url = "https://github.com/Hejsil/zig-clap/archive/refs/tags/0.9.1.tar.gz",
            .hash = "1220...",  // Run zig build to get the hash
        },
        .known_folders = .{
            .url = "https://github.com/ziglibs/known-folders/archive/refs/heads/master.tar.gz",
            .hash = "1220...",
        },
    },

    .paths = .{
        "build.zig",
        "build.zig.zon",
        "src",
        "LICENSE",
        "README.md",
    },
}
zig
// build.zig — use the dependency
const clap_dep = b.dependency("zig_clap", .{
    .target = target,
    .optimize = optimize,
});
exe.root_module.addImport("clap", clap_dep.module("clap"));
bash
# Fetch dependencies (creates zig-cache/packages/)
zig build    # auto-fetches on first run

# Zig will print the hash if missing — copy it into build.zig.zon

8. Custom build steps

zig
// Code generation step
const gen_step = b.addSystemCommand(&.{
    "python3", "scripts/gen.py", "--output", "src/generated.zig",
});
exe.step.dependOn(&gen_step.step);

// Custom install step
const install_config = b.addInstallFile(
    b.path("config/default.toml"),
    "share/myapp/config.toml",
);
b.getInstallStep().dependOn(&install_config.step);

For advanced build.zig patterns, see references/build-zig-patterns.md.

Related skills

  • Use skills/zig/zig-compiler for single-file builds and compiler flags
  • Use skills/zig/zig-cinterop for C library integration in build.zig
  • Use skills/zig/zig-cross for cross-compilation in build.zig
  • Use skills/build-systems/cmake when embedding Zig into a CMake project

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