Files
json/FILES.md
T
Niels Lohmann 71b4eaf743 Document the Meson options and check them in CI
Describe the options of meson.build in FILES.md and in the Meson section
of the package manager documentation, which so far said that a Meson
installation always uses the default configuration.

The ci_meson_install job now also installs with non-default options and
checks that the headers of the multi-header version are installed, that
the definitions reach the pkg-config file and the CMake target, and that
find_package still works.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-27 14:51:27 +02:00

298 lines
12 KiB
Markdown

# Supporting files
This file describes the source for supporting files; that is, files that are not part of the library, but define the infrastructure and other aspects of the project.
- [Continuous Integration](#continuous-integration)
- [GitHub](#github)
- [REUSE](#reuse)
- [Package Managers](#package-managers)
## Continuous Integration
### `.github/workflows`
The [GitHub Actions](https://docs.github.com/en/actions) workflows that build, test, and analyze the library. Each file in this folder defines one workflow:
- `ubuntu.yml`, `macos.yml`, `windows.yml` — build and run the test suite on Linux, macOS, and Windows.
- `check_amalgamation.yml` — verify that the single-header amalgamation in `single_include` is up to date on pull requests.
- `comment_check_amalgamation.yml` — comment on a pull request when the amalgamation check failed.
- `cifuzz.yml` — run short fuzzing sessions via [OSS-Fuzz CIFuzz](https://google.github.io/oss-fuzz/getting-started/continuous-integration/) on pull requests.
- `codeql-analysis.yml` — run [CodeQL](https://codeql.github.com) code scanning.
- `flawfinder.yml` — run the [Flawfinder](https://dwheeler.com/flawfinder/) static analysis.
- `semgrep.yml` — run [Semgrep](https://semgrep.dev) static analysis.
- `scorecards.yml` — run the [OpenSSF Scorecard](https://securityscorecards.dev) supply-chain security checks.
- `dependency-review.yml` — scan dependency changes in pull requests for known vulnerabilities.
- `labeler.yml` — the "Pull Request Labeler" workflow (see `.github/labeler.yml`).
- `stale.yml` — comment on and close stale issues and pull requests.
- `publish_documentation.yml` — build and publish the documentation on every merge to the `develop` branch.
Further documentation:
- [Workflow syntax for GitHub Actions](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions)
> [!IMPORTANT]
> The folder `.github/workflows` is predetermined by GitHub.
### `.cirrus.yml`
Configuration file for the pipeline at [Cirrus CI](https://cirrus-ci.com/github/nlohmann/json).
Further documentation:
- [Writing tasks](https://cirrus-ci.org/guide/writing-tasks/)
> [!IMPORTANT]
> The filename `.cirrus.yml` and position (root of the repository) are predetermined by Cirrus CI.
### `.github/external_ci/appveyor.yml`
Configuration for the pipelines at [AppVeyor](https://ci.appveyor.com/project/nlohmann/json).
Further documentation:
- [appveyor.yml reference](https://www.appveyor.com/docs/appveyor-yml/)
> [!NOTE]
> The filename can be freely configured in the AppVeyor project.
## GitHub
### `CITATION.cff`
A file to configure the citation for the repository which is displayed in the sidebar of the project.
Further documentation:
- [About CITATION files](https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-citation-files)
> [!IMPORTANT]
> The filename `CITATION.cff` and position (root of the repository) are predetermined by GitHub.
### `.github/CODE_OF_CONDUCT.md`
The code of conduct for the project. This is the Markdown version of the [Contributor Covenant Code of Conduct](https://www.contributor-covenant.org/version/2/1/code_of_conduct/). The code of conduct is linked on the [Community Standards](https://github.com/nlohmann/json/community) page and is mentioned by the Sentiment Bot.
Further documentation:
- [Adding a code of conduct to your project](https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/adding-a-code-of-conduct-to-your-project)
> [!IMPORTANT]
> The filename `.github/CODE_OF_CONDUCT.md` is predetermined by GitHub.
> [!NOTE]
> The file is part of the documentation and is included in `docs/mkdocs/docs/community/code_of_conduct.md`.
### `.github/CODEOWNERS`
The code owners file for the project which is used to select reviewers for new pull requests.
Further documentation:
- [About code owners](https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners)
> [!IMPORTANT]
> The filename `.github/CODEOWNERS` is predetermined by GitHub.
### `.github/config.yml`
Configuration file for [probot](https://probot.github.io/apps/), in particular the [Sentiment Bot](https://probot.github.io/apps/sentiment-bot/) and the [Request Info](https://probot.github.io/apps/request-info/).
> [!IMPORTANT]
> The filename `.github/config.yml` is predetermined by probot.
### `.github/CONTRIBUTING.md`
The contribution guidelines which are linked in the [Community Standards](https://github.com/nlohmann/json/community) and at <https://github.com/nlohmann/json/contribute>.
Further documentation:
- [Setting guidelines for repository contributors](https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/setting-guidelines-for-repository-contributors)
> [!IMPORTANT]
> The filename `.github/CONTRIBUTING.md` is predetermined by GitHub.
> [!NOTE]
> The file is part of the documentation and is included in `docs/mkdocs/docs/community/contribution_guidelines.md`.
### `.github/dependabot.yml`
The configuration of [dependabot](https://github.com/dependabot) which ensures the dependencies (GitHub actions and Python packages used in the CI) remain up to date.
Further documentation:
- [Configuring Dependabot security updates](https://docs.github.com/en/code-security/dependabot/dependabot-security-updates/configuring-dependabot-security-updates)
> [!IMPORTANT]
> The filename `.github/dependabot.yml` is predetermined by GitHub.
### `.github/FUNDING.yml`
A file to configure the sponsor button of the repository which is displayed in the sidebar of the project.
Further documentation:
- [Displaying a sponsor button in your repository](https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/displaying-a-sponsor-button-in-your-repository)
> [!IMPORTANT]
> The filename `.github/FUNDING.yml` is predetermined by GitHub.
### `.github/ISSUE_TEMPLATE/bug.yaml`
Issue form template for bugs.
Further documentation:
- [Configuring issue templates for your repository](https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository)
> [!IMPORTANT]
> The folder `.github/ISSUE_TEMPLATE` is predetermined by GitHub.
### `.github/ISSUE_TEMPLATE/config.yml`
Issue template chooser configuration. The file is used to configure the dialog when a new issue is created.
Further documentation:
- [Configuring issue templates for your repository](https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository)
> [!IMPORTANT]
> The filename `.github/ISSUE_TEMPLATE/config.yml` is predetermined by GitHub.
### `.github/labeler.yml`
Configuration file for the "Pull Request Labeler" workflow defined in `workflows/labeler.yml`. This file defines rules how labels are assigned to pull requests based on which files are changed.
Further documentation:
- [Label manager for PRs and issues based on configurable conditions](https://github.com/srvaroa/labeler)
> [!NOTE]
> The filename defaults to `.github/labeler.yml` and can be configured in the workflow.
### `.github/PULL_REQUEST_TEMPLATE.md`
The pull request template which prefills new pull requests.
Further documentation:
- [Creating a pull request template for your repository](https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/creating-a-pull-request-template-for-your-repository)
> [!IMPORTANT]
> The filename `.github/PULL_REQUEST_TEMPLATE.md` is predetermined by GitHub.
### `.github/SECURITY.md`
The goal is to describe how to securely report security vulnerabilities for this repository. The security policy is linked at <https://github.com/nlohmann/json/security/policy>.
Further documentation:
- [Adding a security policy to your repository](https://docs.github.com/en/code-security/getting-started/adding-a-security-policy-to-your-repository)
> [!IMPORTANT]
> The filename `.github/SECURITY.md` is predetermined by GitHub.
> [!NOTE]
> The file is part of the documentation and is included in `docs/mkdocs/docs/community/security_policy.md`.
### `LICENSE.MIT`
The license of the project.
Further documentation:
- [Adding a license to a repository](https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/adding-a-license-to-a-repository)
> [!IMPORTANT]
> The filename `LICENSE.MIT` is partly predetermined by GitHub. The root filename must be `LICENSE`.
## REUSE
### `.reuse/dep5`
The file defines the licenses of certain third-party components in the repository. The root `Makefile` contains a target `reuse` that checks for compliance.
Further documentation:
- [DEP5](https://reuse.software/spec-3.2/#dep5-deprecated)
- [reuse command-line tool](https://pypi.org/project/reuse/)
- [documentation of linting](https://reuse.readthedocs.io/en/stable/man/reuse-lint.html)
- [REUSE](http://reuse.software)
> [!IMPORTANT]
> The filename `.reuse/dep5` is predetermined by REUSE. Alternatively, a `REUSE.toml` file can be used.
### `.reuse/templates`
Copyright header templates for source files. The root `Makefile` contains a target `reuse` that updates copyright headers with the templates.
Further information:
- [reuse command-line tool](https://pypi.org/project/reuse/)
- [documentation on templates](https://reuse.readthedocs.io/en/stable/man/reuse-annotate.html#cmdoption-t)
- [REUSE](http://reuse.software)
> [!IMPORTANT]
> The folder name `.reuse/templates` is predetermined by REUSE.
### `LICENSES`
A folder that contains every license of all license files (library and third-party code).
Further documentation:
- [REUSE specification](https://reuse.software/spec-3.3/)
> [!IMPORTANT]
> The folder name `LICENSES` is predetermined by REUSE.
## Package Managers
### `BUILD.bazel`
The build definition for [Bazel](https://bazel.build). The file is generated by
`cmake/scripts/gen_bazel_build_file.cmake`, which derives the header list from the files in `include`; change the
script rather than editing the file by hand. The file can be updated by calling
```shell
make BUILD.bazel
```
The "Check amalgamation" workflow fails if the file is out of date.
### `meson.build` and `meson_options.txt`
Meson build definitions suitable for use as a subproject ("wrap" in Meson terminology).
Projects wishing to use the wrap can execute:
```sh
meson wrap install nlohmann_json
```
Which allows Meson to build from source when a system provided dependency isn't available.
To build directly:
```sh
meson setup builddir
ninja -C builddir
```
`meson_options.txt` defines the options, which mirror the CMake options that change the library's target (for example,
`-DDiagnostics=true`). Meson requires this file next to `meson.build`, so it is also part of `include.zip`.
When installing, `meson.build` installs the headers, a pkg-config file, and the CMake package config files, so that
`find_package(nlohmann_json)` works. As Meson cannot generate `nlohmann_jsonTargets.cmake` itself, it is created from
the template `cmake/nlohmann_jsonTargets.cmake.in`, which is only used by Meson.
### `Package.swift`
The package manifest for the [Swift Package Manager](https://www.swift.org/package-manager/).
### `MODULE.bazel`
The module definition for [Bazel](https://bazel.build)'s [Bzlmod](https://bazel.build/external/module) dependency system. It complements `BUILD.bazel` and replaces the previously used `WORKSPACE.bazel`.
Further documentation:
- [Bazel modules](https://bazel.build/external/module)