Multi Project Build

Gradle supports multi project builds helps modularise your project for maintainability and performance

If each subproject depends on another, they need to be declared in its build script, otherwise they cannot be used as dependency

And if you change the code in the single project, and it will be recompiled and retested as a whole project, but if you change the code in the subproject, only the subproject will be recompiled and retested

Multi Project Build Structure

The Multi project build is structured that placed gradle’s files such as settings.gradle.kts in the top-level directory and each subproject in the subdirectory

Each subproject has its own directory and build.gradle.kts file

root directory (rootproject)
- gradle
    - wrapper
    - libs.versions.toml
- settings.gradle.kts
- gradle.properties
- gradlew

- sub directory (subproject)
    - directory
    - build.gradle.kts

settings.gradle.kts

configure subprojects to take part in the build with “include” statement in root project’s settings.gradle.kts file

include("subproject1", "subproject2", "subproject3")