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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, Windows or
Cygwin.
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@v1
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.
* Set the `cygwin` parameter to `1` to set up Clang inside an existing Cygwin
installation (you can set up Cygwin itself using my action [setup-cygwin]).
* `cc` and `c++` executables are set up, pointing to the `clang` and `clang++`
executables.
Disable this by setting the `cc` parameter to `0`.
[setup-cygwin]: https://github.com/egor-tensin/setup-cygwin
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.
| cygwin | *any* | ✓ | Install native binaries.
| | 1 | | Install Cygwin packages.
| cc | 1 | ✓ | Set up `cc`/`c++` executables.
| | *any* | | Don't set up `cc`/`c++`.
| hardlinks | *any* | ✓ | Cygwin: don't convert any symlinks.
| | 1 | | Cygwin: convert symlinks in /usr/bin to hardlinks.
| Output | Example | Description
| ------- | --------- | -----------
| clang | clang-4.0 | clang compiler binary file name
| clangxx | clang++-7 | clang++ compiler binary file 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 (`5.0`, `8`,
`9`, 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, the supported versions for Bionic & Focal as of July 2021 are
listed below.
| `version` | Bionic | Focal
| --------- | ------ | -----
| 3.9 | ✓ |
| 4.0 | ✓ |
| 5.0 | ✓ |
| 6.0 | ✓ | ✓
| 7 | ✓ | ✓
| 8 | ✓ | ✓
| 9 | ✓ | ✓
| 10 | ✓ | ✓
| 11 | ✓ | ✓
| 12 | ✓ | ✓
This table is not definitive; I expect more future versions to be made
available, especially for Focal.
On Windows and Cygwin, the `version` parameter is ignored.
License
-------
Distributed under the MIT License.
See [LICENSE.txt] for details.
[LICENSE.txt]: LICENSE.txt
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