Splitting all output directories in Gradle

Question

Gradle 4.0 came out yesterday and I updated my project for it.

Now I am getting the following warning:

Gradle now uses separate output directories

Answer 1

For example, if you mix Java, Kotlin and Groovy project structure should be like the following:

root/
    src/
       main/
            java/
            kotlin/
            groovy/
       test/
            java/
            kotlin/
            groovy/

In you build.gradle you have to specify plugins that are required for specific language.

apply plugin: 'java'
apply plugin: 'groovy'
apply plugin: 'kotlin'