| # Pkg-config | |
| If you are using bare Makefiles, you can use `pkg-config` to generate the include flags that point to where the library is installed: | |
| ```sh | |
| pkg-config nlohmann_json --cflags | |
| ``` | |
| Users of the [Meson build system](package_managers.md#meson) will also be able to use a system wide library, which will be found by `pkg-config`: | |
| ```meson | |
| json = dependency('nlohmann_json', required: true) | |
| ``` |