Gradle中依赖项的依赖项

Question

I am studying Gradle and I am trying to find best practices with it.

The project that I will describe is built successful. You can clone on GitHub, it is a eclipse/java project: https://github.com/pauloleitemoreira/GradleTests.git

Assume that I have a MainProject with some file modules dependencies that not belong to the MainProject.

Project Structure

x-MainProject
|        |
|        x-mainModule 
|
x-LibProject
|        |
|        x-libModule
|
x-BaseLibProject
         |
         x-baseLibModule

MainProject/setting.gradle file:

include ':mainModule'

include ':LibProject', ':LibProject:libModule'
project(':LibProject').projectDir = new File(settingsDir, '../LibProject')
project(':LibProject:libModule').projectDir = new File(settingsDir, '../LibProject/libModule')

/*???*/include ':BaseLibProject', ':BaseLibProject:baseLibModule'
/*???*/project(':BaseLibProject').projectDir = new File(settingsDir, '../BaseLibProject')
/*???*/project(':BaseLibProject:baseLibModule').projectDir = new File(settingsDir, '../BaseLibProject/baseLibModule')

LibProject/setting.gradle file:

include ':libModule'

include ':BaseLibProject', ':BaseLibProject:baseLibModule'
project(':BaseLibProject').projectDir = new File(settingsDir, '../BaseLibProject')
project(':BaseLibProject:baseLibModule').projectDir = new File(settingsDir, '../BaseLibProject/baseLibModule')

BaseLibProject/setting.gradle file:

include 'baseLibModule'

I noticed that only the MainProject/setting.gradle file is executed when Build. The others LibProject/setting.gradle and BaseLibProject/setting.gradle are not executed when I am building the MainProject.

I marked with /*???*/ the lines that sound weird for me, because I suppose that libModule would have to know where are your dependencies. In my understanding, these lines isn't necessary and gradle could include BaseLibModule when LibModule is built. But unfortunately, if I take out these lines, the project won't build.

I was thinking if there is another place to put project(':...').projectDir = new File... , in a way to avoid to include Dependency of dependency files?

Answer 1

Build lifecycle chapter in Gradle user guide explains how multi-project builds work. Simple version is that there is one settings.gradle in root project folder that defines what projects are included in build. Each project can have build.gradle (or the name can be different or the file may be missing).