How to generate source files and compile them with gradle

Question

I have a gradle build script similar to:

apply plugin: 'war'

task genSources << {
  // here I generate some java files
}

// making sure that source files are generated
// before compilation
compileJava.dependsOn(genSources)

How can I make the files generated in genSources compile along with files in src/main/java during compileJava?

Solution

You may try adding the path to the generated sources like this:

sourceSets {
    main {
        java {
            srcDir '<path to generatedJava>'
        }
    }
}

Comments

[Hans Westerbeek]

eg sourceSets.main.java.srcDir '<path to generatedJava>'

[Casey Watson]

You can also add multiples via srcDirs 'build/generated-src/java', 'src/main/java'

[will]

I found this helped me get the generated files compiled OK from a generated/java/ location. But for some reason the task to generate the JAXB classes from XSD files does NOT fire even when it is a dependency of the compile in genSources. I still need to manually enter: gradle xjc separate, and before I Build. Any ideas?