//configureJavaCompatibility(javaVersion = 8)

configureKotlinCompatibility(version = version("kotlinCoreLibrariesVersion"))

tasks.withType<JavaCompile> {
  options.encoding = Charsets.UTF_8.toString()
  if (name.contains("Java9")) {
    sourceCompatibility = "9"
    targetCompatibility = "9"
  } else {
    sourceCompatibility = "1.8"
    targetCompatibility = "1.8"
  }
}

tasks.withType<KotlinCompile> {
  compilerOptions {

  val compilation = kotlin.targets["jvm"].compilations["main"]
  val compileKotlinTask = compilation.compileTaskProvider.get() as KotlinJvmCompile
  val targetDir = compileKotlinTask.destinationDirectory.dir("../java9")
  val sourceDir = file("src/jvmMain/java9/")

  // Use a Java 11 compiler for the module info.
  javaCompiler.set(project.javaToolchains.compilerFor { languageVersion.set(JavaLanguageVersion.of(11)) })

    val compileKotlinTask = tasks.getByName("compileKotlin") as KotlinJvmCompile
    dependsOn(compileKotlinTask)

    if (enableValidation) {
      compileKotlinTask.source(file("src/main/java9"))
    }

    // Ignore warnings about using 'requires transitive' on automatic modules.
    // not needed when compiling with recent JDKs, e.g. 17
    options.compilerArgs.add("-Xlint:-requires-transitive-automatic")