SubProject Item
A SubProject item is used to add a project defined in another file as a sub-project to the surrounding project:
  SubProject {
      filePath: "subdir/project.qbs"
      Properties {
          name: "A sub-project"
      }
  }
If you don't need to set any properties on the sub-project, you can also use the references property, the same way you would do for a product:
  references: "subdir/project.qbs"
It is also possible to nest Project items directly in the same file.
SubProject Properties
| Property | Type | Default | Description | 
|---|---|---|---|
| filePath | path | empty | The file path of the project to add as a sub-project. If the top-level item in this file is a Product, it gets wrapped automatically in a new project. | 
| inheritProperties | bool | true | Whether the sub-project should inherit the properties of the surrounding project. You can use this feature to share "global" settings between (sub-)projects. |