java8.gradle

import static org.gradle.api.JavaVersion.VERSION_1_8

/*
 * Gradle script plugin: Configure a module such that Java and Kotlin
 * are always compiled for Java 8.
 */
apply plugin: 'kotlin'

tasks.withType(AbstractCompile).configureEach {
    // This is a bit ugly, but Gradle isn't recognising the KotlinCompile task
    // as it does the built-in JavaCompile task.
    if (it.class.name.startsWith('org.jetbrains.kotlin.gradle.tasks.KotlinCompile')) {
        kotlinOptions {
            jvmTarget = VERSION_1_8
        }
    }
}

tasks.withType(JavaCompile).configureEach {
    sourceCompatibility = VERSION_1_8
    targetCompatibility = VERSION_1_8
}