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Install CMake package config files with Meson

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A Meson installation only provided the headers and a pkg-config file, so
consumers using find_package(nlohmann_json) could not find the library.
Meson now also installs nlohmann_jsonConfig.cmake and
nlohmann_jsonConfigVersion.cmake from the existing templates, plus a
static nlohmann_jsonTargets.cmake that defines the header-only imported
target with a relocatable include path.

A new CI job installs with Meson and builds tests/cmake_import/project
against the result.

Closes #3885

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-09-27 14:25:10 +02:00
parent 85f8b21e1c
commit 0d2240ad1e
5 changed files with 89 additions and 5 deletions
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docs/mkdocs/docs/integration/package_managers.md
+9 -4
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@@ -121,10 +121,15 @@ meson wrap install nlohmann_json
Please see the Meson project for any issues regarding the packaging.
The provided `meson.build` can also be used as an alternative to CMake for installing `nlohmann_json` system-wide in
which case a pkg-config file is installed. To use it, have your build system require the `nlohmann_json`
pkg-config dependency. In Meson, it is preferred to use the
[`dependency()`](https://mesonbuild.com/Reference-manual.html#dependency) object with a subproject fallback, rather than
using the subproject directly.
which case a pkg-config file and the CMake package config files are installed. To use it, have your build system require
the `nlohmann_json` pkg-config dependency, or use [`find_package(nlohmann_json)`](cmake.md#external) in CMake. In Meson,
it is preferred to use the [`dependency()`](https://mesonbuild.com/Reference-manual.html#dependency) object with a
subproject fallback, rather than using the subproject directly.
!!! note
The `meson.build` does not expose the library's [CMake options](cmake.md#cmake-options), so a Meson installation
always uses the library's default configuration.
??? example "Example: Wrap"