zig/README.md

![ZIG](https://ziglang.org/img/zig-logo-dynamic.svg)

A general-purpose programming language and toolchain for maintaining
**robust**, **optimal**, and **reusable** software.

https://ziglang.org/

## Documentation

If you are looking at this README file in a source tree, please refer to the
**Release Notes**, **Language Reference**, or **Standard Library
Documentation** corresponding to the version of Zig that you are using by
following the appropriate link on the
[download page](https://ziglang.org/download).

Otherwise, you're looking at a release of Zig, so you can find the language
reference at `doc/langref.html`, and the standard library documentation by
running `zig std`, which will open a browser tab.

## Installation

 * [download a pre-built binary](https://ziglang.org/download/)
 * [install from a package manager](https://github.com/ziglang/zig/wiki/Install-Zig-from-a-Package-Manager)
 * [bootstrap zig for any target](https://github.com/ziglang/zig-bootstrap)

A Zig installation is composed of two things:

1. The Zig executable
2. The lib/ directory

At runtime, the executable searches up the file system for the lib/ directory,
relative to itself:

* lib/
* lib/zig/
* ../lib/
* ../lib/zig/
* (and so on)

In other words, you can **unpack a release of Zig anywhere**, and then begin
using it immediately. There is no need to install it globally, although this
mechanism supports that use case too (i.e. `/usr/bin/zig` and `/usr/lib/zig/`).

## Building from Source

Ensure you have the required dependencies:

 * CMake >= 3.15
 * System C/C++ Toolchain
 * LLVM, Clang, LLD development libraries == 19.x

Then it is the standard CMake build process:

```
mkdir build
cd build
cmake ..
make install
```

For more options, tips, and troubleshooting, please see the
[Building Zig From Source](https://github.com/ziglang/zig/wiki/Building-Zig-From-Source)
page on the wiki.

## Building from Source without LLVM

In this case, the only system dependency is a C compiler.

```
cc -o bootstrap bootstrap.c
./bootstrap
```

This produces a `zig2` executable in the current working directory. This is a
"stage2" build of the compiler,
[without LLVM extensions](https://github.com/ziglang/zig/issues/16270), and is
therefore lacking these features:
- Release mode optimizations
- [aarch64 machine code backend](https://github.com/ziglang/zig/issues/21172)
- [@cImport](https://github.com/ziglang/zig/issues/20630)
- [zig translate-c](https://github.com/ziglang/zig/issues/20875)
- [Ability to compile assembly files](https://github.com/ziglang/zig/issues/21169)
- [Some ELF linking features](https://github.com/ziglang/zig/issues/17749)
- [Most COFF/PE linking features](https://github.com/ziglang/zig/issues/17751)
- [Some WebAssembly linking features](https://github.com/ziglang/zig/issues/17750)
- [Ability to create import libs from def files](https://github.com/ziglang/zig/issues/17807)
- [Ability to create static archives from object files](https://github.com/ziglang/zig/issues/9828)
- Ability to compile C, C++, Objective-C, and Objective-C++ files

However, a compiler built this way does provide a C backend, which may be
useful for creating system packages of Zig projects using the system C
toolchain. **In this case, LLVM is not needed!**

Furthermore, a compiler built this way provides an LLVM backend that produces
bitcode files, which may be compiled into object files via a system Clang
package. This can be used to produce system packages of Zig applications
without the Zig package dependency on LLVM.

## Contributing

[Donate monthly](https://ziglang.org/zsf/).

Zig is Free and Open Source Software. We welcome bug reports and patches from
everyone. However, keep in mind that Zig governance is BDFN (Benevolent
Dictator For Now) which means that Andrew Kelley has final say on the design
and implementation of everything.

One of the best ways you can contribute to Zig is to start using it for an
open-source personal project.

This leads to discovering bugs and helps flesh out use cases, which lead to
further design iterations of Zig. Importantly, each issue found this way comes
with real world motivations, making it straightforward to explain the reasoning
behind proposals and feature requests.

You will be taken much more seriously on the issue tracker if you have a
personal project that uses Zig.

The issue label
[Contributor Friendly](https://github.com/ziglang/zig/issues?q=is%3Aissue+is%3Aopen+label%3A%22contributor+friendly%22)
exists to help you find issues that are **limited in scope and/or knowledge of
Zig internals.**

Please note that issues labeled
[Proposal](https://github.com/ziglang/zig/issues?q=is%3Aissue+is%3Aopen+label%3Aproposal)
but do not also have the
[Accepted](https://github.com/ziglang/zig/issues?q=is%3Aissue+is%3Aopen+label%3Aaccepted)
label are still under consideration, and efforts to implement such a proposal
have a high risk of being wasted. If you are interested in a proposal which is
still under consideration, please express your interest in the issue tracker,
providing extra insights and considerations that others have not yet expressed.
The most highly regarded argument in such a discussion is a real world use case.

For more tips, please see the
[Contributing](https://github.com/ziglang/zig/wiki/Contributing) page on the
wiki.

## Community

The Zig community is decentralized. Anyone is free to start and maintain their
own space for Zig users to gather. There is no concept of "official" or
"unofficial". Each gathering place has its own moderators and rules. Users are
encouraged to be aware of the social structures of the spaces they inhabit, and
work purposefully to facilitate spaces that align with their values.

Please see the [Community](https://github.com/ziglang/zig/wiki/Community) wiki
page for a public listing of social spaces.