```Zig Libc``` **Zig Libc**

```Zig Libc``` Zig Libc
Zig Libc

原始链接: https://ziglang.org/devlog/2026/#2026-01-31

## Zig libc进展 - 2026年1月 “zig libc”子项目正在取得显著进展，旨在用Zig包装器替换标准libc函数的已包含C源代码。该举措已经从Zig仓库中删除了250个C文件，减小了仓库大小并提高了对C和外部项目的独立性。一项关键改进是将libc函数直接集成到Zig的编译单元中，从而实现跨优化——类似于链接时优化——以提高性能并减少冗余。这也为未来控制libc行为打开了可能性，例如将I/O与io_uring集成或在C代码中启用资源泄漏检测。现在鼓励用户直接向Zig项目报告任何与libc相关的错误，因为Zig正在成为这些功能的主要提供者。该项目严重依赖于像`libc-test`这样的工具，以确保在此过渡期间数学函数的准确性。

## Zig Libc 进展与讨论总结 Hacker News 讨论了 Zig 项目用 Zig 原生实现替代标准 C 库 (libc) 的重大进展。目标是减少代码重复，消除追踪来自多个来源的 libc，并实现更好的优化机会。关键点包括： * **静态 vs. 动态链接：** 此更改主要影响静态 libc 链接。Zig 仍然支持根据需要动态链接到系统 libc（例如 macOS）。讨论了 OpenBSD 的支持，因为它传统上强制使用 libc。 * **优化潜力：** Zig 的方法允许在 libc 边界进行优化，而传统的链接方法难以或不可能实现。 * **政治讨论：** 线程的很大一部分演变成关于 ICE（移民和海关执法局）的讨论，原因是开发者分享了个人抗议经历以及对政府过度干预的担忧。 * **LLM 与代码翻译：** 有人对使用 LLM 将 C 代码翻译成 Zig 感兴趣，但当前的 LLM 在 Zig 的语法和频繁更改方面存在困难。 * **基于代理的开发：** 一些用户建议使用 AI 代理来自动化移植过程，但承认存在幻觉和错误的风险。该项目被视为 Zig 及其生态系统的一个积极步骤，在性能、控制和长期可维护性方面具有潜在优势。

原文

January 31, 2026

Author: Andrew Kelley

Over the past month or so, several enterprising contributors have taken an interest in the zig libc subproject. The idea here is to incrementally delete redundant code, by providing libc functions as Zig standard library wrappers rather than as vendored C source files. In many cases, these functions are one-to-one mappings, such as memcpy or atan2, or trivially wrap a generic function, like strnlen:

fn strnlen(str: [*:0]const c_char, max: usize) callconv(.c) usize {
    return std.mem.findScalar(u8, @ptrCast(str[0..max]), 0) orelse max;
}

So far, roughly 250 C source files have been deleted from the Zig repository, with 2032 remaining.

With each function that makes the transition, Zig gains independence from third party projects and from the C programming language, compilation speed improves, Zig’s installation size is simplified and reduced, and user applications which statically link libc enjoy reduced binary size.

Additionally, a recent enhancement now makes zig libc share the Zig Compilation Unit with other Zig code rather than being a separate static archive, linked together later. This is one of the advantages of Zig having an integrated compiler and linker. When the exported libc functions share the ZCU, redundant code is eliminated because functions can be optimized together. It’s kind of like enabling LTO (Link-Time Optimization) across the libc boundary, except it’s done properly in the frontend instead of too late, in the linker.

Furthermore, when this work is combined with the recent std.Io changes, there is potential for users to seamlessly control how libc performs I/O - for example forcing all calls to read and write to participate in an io_uring event loop, even though that code was not written with such use case in mind. Or, resource leak detection could be enabled for third-party C code. For now this is only a vaporware idea which has not been experimented with, but the idea intrigues me.

Big thanks to Szabolcs Nagy for libc-test. This project has been a huge help in making sure that we don’t regress any math functions.

As a reminder to our users, now that Zig is transitioning to being the static libc provider, if you encounter issues with the musl, mingw-w64, or wasi-libc libc functionality provided by Zig, please file bug reports in Zig first so we don’t annoy maintainers for bugs that are in Zig, and no longer vendored by independent libc implementation projects.

Abolish ICE.

```Zig Libc``` **Zig Libc** Zig Libc

```Zig Libc``` Zig Libc
Zig Libc