Add a way to customize compiler file in build.gradle

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/KotlinGradlePluginIT.kt

@@ -308,6 +308,23 @@ class KotlinGradleIT: BaseGradleIT() {
         }
     }
 
+    @Test
+    fun testCustomCompilerFile() {
+        val project = Project("customCompilerFile", GRADLE_VERSION)
+        project.setupWorkingDir()
+
+        // copy compiler embeddable to project dir using custom name
+        val classpath = System.getProperty("java.class.path").split(File.pathSeparator)
+        val kotlinEmbeddableJar = File(classpath.find { it.contains("kotlin-compiler-embeddable") })
+        val compilerJar = File(project.projectDir, "compiler.jar")
+        kotlinEmbeddableJar.copyTo(compilerJar)
+
+        project.build("build") {
+            assertSuccessful()
+            assertContains("Using kotlin compiler jar: $compilerJar")
+        }
+    }
+
 
     @Test
     fun testMultiplatformCompile() {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/customCompilerFile/build.gradle

@@ -0,0 +1,22 @@
+buildscript {
+    repositories {
+        mavenLocal()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: "kotlin"
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+dependencies {
+    testCompile 'junit:junit:4.12'
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+}
+
+compileKotlin.compilerJarFile = project.file("compiler.jar")

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/customCompilerFile/src/main/kotlin/Dummy.kt

@@ -0,0 +1 @@
+class Dummy