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Set up Clang
============
[](https://github.com/egor-tensin/setup-clang/actions/workflows/test.yml)
This GitHub action sets up Clang & LLVM in your workflow run.
1. Installs either 32-bit or 64-bit Clang & LLVM on either Ubuntu or Windows.
2. Specify a version to install using the `version` parameter.
Use it in your workflow like this:
- name: Set up Clang
uses: egor-tensin/setup-clang@v2
with:
version: latest
platform: x64
* `latest` is the default value for the `version` parameter and can be omitted.
* `x64` is the default value for the `platform` parameter and can be omitted.
Use `x86` if you want to build 32-bit binaries.
* `cc` and `c++` executables are set up, pointing to the `clang` and `clang++`
executables.
Disable this by setting the `cc` parameter to `0`.
API
---
| Input | Value | Default | Description
| --------- | ------- | ------- | -----------
| version | latest | ✓ | Install the latest version available in the repository.
| | *any* | | Install a specific version if it's available (see below).
| platform | x64 | ✓ | Install the x86_64 toolchain.
| | *any* | | Install the i686 toolchain.
| cc | 1 | ✓ | Set up `cc`/`clang`/`c++`/`clang++` executables.
| | *any* | | Don't set up the executables.
| Output | Example | Description
| ------- | --------- | -----------
| clang | clang-4.0 | `clang` binary name
| clangxx | clang++-7 | `clang++` binary name
| lld | ld.lld-10 | `ld.lld` binary name
Supported versions
------------------
Unless the `version` parameter value is "latest", the official LLVM repository
is used to make more versions available.
You can pass the version number as the `version` parameter value (`13`, `17`,
`20`, etc.), and this action will install the corresponding packages.
The `version` parameter value is not checked for being an available version for
the current distribution.
The supported versions for a particular distribution are those found in that
distro's repositories & those in the LLVM repository.
For example, you can find the list of available versions as of April 2026
below.
| `version` | Jammy | Noble
| --------- | ----- | -----
| 11 | ✓ |
| 12 | ✓ |
| 13 | ✓ |
| 14 | ✓ | ✓
| 15 | ✓ | ✓
| 16 | ✓ | ✓
| 17 | ✓ | ✓
| 18 | ✓ | ✓
| 19 | ✓ | ✓
| 20 | ✓ | ✓
| 21 | ✓ | ✓
| 22 | ✓ | ✓
This table should be updated periodically; it's a work-in-progress.
(Note to self: the supported versions are those found in [Ubuntu repos] and
the official [LLVM repos]).
[Ubuntu repos]: https://packages.ubuntu.com/
[LLVM repos]: https://apt.llvm.org/
On Windows, the `version` parameter is ignored.
License
-------
Distributed under the MIT License.
See [LICENSE.txt] for details.
[LICENSE.txt]: LICENSE.txt
|
