buildscript { ext.kotlin_version = '1.3.50' repositories { google() mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:4.1.0' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } allprojects { repositories { google() mavenCentral() } } rootProject.buildDir = '../build' subprojects { project.buildDir = "${rootProject.buildDir}/${project.name}" project.evaluationDependsOn(':app') } task clean(type: Delete) { delete rootProject.buildDir }