target jvm 1.8

Author: luca992

build.gradle.kts

@@ -1,3 +1,6 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     `kotlin-dsl`
     `java-gradle-plugin`
@@ -105,3 +108,9 @@ tasks.javadoc {
         (options as StandardJavadocDocletOptions).addBooleanOption("html5", true)
     }
 }
+
+allprojects {
+    tasks.withType<KotlinCompile> {
+        compilerOptions.jvmTarget = JvmTarget.JVM_1_8
+    }
+}