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@@ -125,10 +125,24 @@ 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](pkg-config.md) 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](pkg-config.md) 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.
The options that change the library's configuration are available in Meson as well, named like the
[CMake options](cmake.md#cmake-options) without the `JSON_` prefix: `MultipleHeaders`, `GlobalUDLs`,
`ImplicitConversions`, `DisableEnumSerialization`, `DisableTupleReferenceConversion`, `Diagnostics`,
`Diagnostic_Positions`, `LegacyDiscardedValueComparison`, `StrictNulHandling`, `StrictBinaryUTF8`, and
`DeleteDeprecatedFunctions`. They have the same defaults as in CMake, except that
`MultipleHeaders` is `false`. Set them with `-D` when setting up the build, or with the subproject name as prefix when
the library is used as a subproject:
```shell
meson setup build -Dnlohmann_json:Diagnostics=true
```
The resulting compile definitions are part of the Meson dependency, the pkg-config file, and the CMake target.
??? example "Example: Wrap"