Building a Kotlin + Java 9 project with Gradle

Question

I\'m fairly new to Gradle (and Java 9, to be honest), and I\'m trying to use Gradle to build a simple library project that is a mix of Java 9 and Kotlin. More in detail, there i

Answer 1

Solved! It was sufficient to set the kotlin compilation dir to the same dir as Java:

compileKotlin.destinationDir = compileJava.destinationDir

It works now, both with the sources in the same tree or in different trees; but with a quirk: the jar task produces a jar with all the entries duplicated. I'll work on fix this, next.

Thanks to everyone!