[2.4.6 - Java] SBT multi project build - Sharing common variables and code

[Rajendra Prasad Gujja]

Hi All,

I am having a lot of troubles in achieving the multi-project (modules) build. The documentation is not so clear.

https://www.playframework.com/documentation/2.4.x/SBTSubProjects#Sharing-common-variables-and-code

In the link provided, it is suggested to have a Common.scala in root/project and refer that in sub-project. However, when I try to run the sub-project on its own, it is not able to find the Common which is in root project even after I add the root reference something like bellow

name := "sub-project"

Common.settings

libraryDependencies ++= Common.commonDependencies

lazy val subProject = (project in file("."))
  .enablePlugins(PlayJava)
  .dependsOn(zeus)

lazy val root = (project in file("../"))

I have also tried to write the Build.scala instead of build.sbt, but no help.

Could somebody please point me to correct documentation? I searched over sbt documentation and internet, all the blogs/articles are talking about defining everything in root/build.sbt but not modularized as suggested in play's link.

Thanks,

Raj.

[Barys Ilyushonak]

Hey Raj,

hopefully you saw it: http://www.scala-sbt.org/0.13/docs/Multi-Project.html

The definitions in .sbt files are not visible in other .sbt files. In order to share code between .sbt files, define one or more Scala files in the project/ directory of the build root.

so in you case the "sub-project" becomes "root" project when you try to start the sbt out of sub dir.

You can run the sbt from correct root project, and then navigate to the sub-project via sbt commands:

projects
project sub-project

вторник, 19 января 2016 г., 2:25:33 UTC+1 пользователь Rajendra Prasad Gujja написал:

[Rajendra Prasad Gujja]

Hi Barys Ilyushonak,

Thank you very much for clarifying. I am learning sbt and sub-project builds and going through the articles over and over. I now in a little better situation. I was thinking that a sub-project can run on its own without going through "projects" and "project sub-project" but it seems not possible unless I have changed the "devSettings" etc.

Thank you very much for the link, it helped me.

Thanks,

Raj.