Fix warnings in buildSrc

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/Internals.kt

@@ -31,13 +31,13 @@ internal val Project.kotlin: KotlinMultiplatformExtension
     get() = extensions.getByName("kotlin") as KotlinMultiplatformExtension
 
 internal val NamedDomainObjectCollection<KotlinTargetPreset<*>>.macosX64: KotlinTargetPreset<*>
-    get() = getByName(::macosX64.name) as KotlinTargetPreset<*>
+    get() = getByName(::macosX64.name)
 
 internal val NamedDomainObjectCollection<KotlinTargetPreset<*>>.linuxX64: KotlinTargetPreset<*>
-    get() = getByName(::linuxX64.name) as KotlinTargetPreset<*>
+    get() = getByName(::linuxX64.name)
 
 internal val NamedDomainObjectCollection<KotlinTargetPreset<*>>.mingwX64: KotlinTargetPreset<*>
-    get() = getByName(::mingwX64.name) as KotlinTargetPreset<*>
+    get() = getByName(::mingwX64.name)
 
 internal val NamedDomainObjectContainer<out KotlinCompilation<*>>.main: KotlinNativeCompilation
     get() = getByName(::main.name) as KotlinNativeCompilation

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/Utils.kt

@@ -62,7 +62,7 @@ val Project.testTarget
     get() = findProperty("target") as KonanTarget
 
 val Project.testTargetSuffix
-    get() = (findProperty("target") as KonanTarget ?: HostManager.host).name.capitalize()
+    get() = (findProperty("target") as KonanTarget).name.capitalize()
 
 val Project.verboseTest
     get() = hasProperty("test_verbose")
@@ -117,12 +117,10 @@ fun File.dependencies() =
 
 
 fun Task.dependsOnPlatformLibs() {
-    val platformManager = project.project(":kotlin-native").platformManager
-    val target = project.testTarget ?: platformManager.hostPlatform.target
     (this as? KonanTest)?.run {
         project.file(source).dependencies().forEach {
-            this.dependsOn(":kotlin-native:platformLibs:${target.name}-$it")
+            this.dependsOn(":kotlin-native:platformLibs:${project.testTarget.name}-$it")
-            //this.dependsOn(":kotlin-native:platformLibs:${target.name}-${it}Cache")
+            //this.dependsOn(":kotlin-native:platformLibs:${project.testTarget.name}-${it}Cache")
         }
     } ?: error("unsupported task : $this")
 }
@@ -401,3 +399,9 @@ fun Project.buildStaticLibrary(cSources: Collection<File>, output: File, objDir:
         )
     }
 }
+
+// Workaround the deprecation warning from stdlib's appendln, which is reported because this module is compiled with API version 1.3.
+internal fun StringBuilder.appendln(o: Any?) {
+    append(o)
+    append('\n')
+}

kotlin-native/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/KonanArtifactContainer.kt

@@ -19,18 +19,18 @@ package org.jetbrains.kotlin.gradle.plugin.konan
 import groovy.lang.Closure
 import org.gradle.api.Action
 import org.gradle.api.NamedDomainObjectFactory
+import org.gradle.api.internal.CollectionCallbackActionDecorator
 import org.gradle.api.internal.DefaultPolymorphicDomainObjectContainer
 import org.gradle.api.internal.project.ProjectInternal
 import org.gradle.internal.reflect.Instantiator
 import org.gradle.util.ConfigureUtil
 import kotlin.reflect.KClass
 
-open class KonanArtifactContainer(val project: ProjectInternal)
+open class KonanArtifactContainer(val project: ProjectInternal) : DefaultPolymorphicDomainObjectContainer<KonanBuildingConfig<*>>(
-    : DefaultPolymorphicDomainObjectContainer<KonanBuildingConfig<*>>(
+    KonanBuildingConfig::class.java,
-        KonanBuildingConfig::class.java,
+    project.services.get(Instantiator::class.java),
-        project.services.get(Instantiator::class.java)
+    CollectionCallbackActionDecorator.NOOP
 ) {
-
     private inner class KonanBuildingConfigFactory<T: KonanBuildingConfig<*>>(val configClass: KClass<T>)
         : NamedDomainObjectFactory<T> {
 

kotlin-native/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/KonanBuildingConfig.kt

@@ -120,7 +120,7 @@ abstract class KonanBuildingConfig<T : KonanBuildingTask>(
             init(this@KonanBuildingConfig, outputDescription.destinationDir, outputDescription.artifactName, target)
             group = BasePlugin.BUILD_GROUP
             description = generateTaskDescription(this)
-        } ?: throw Exception("Cannot create task for target: ${target.visibleName}")
+        }
 
     private fun createAggregateTask(): TaskProvider<Task> =
         project.tasks.register(generateAggregateTaskName()) {

kotlin-native/tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/konan/KonanPlugin.kt

@@ -328,9 +328,6 @@ class KonanPlugin @Inject constructor(private val registry: ToolingModelBuilderR
 
 
     override fun apply(project: ProjectInternal) {
-        if (project == null) {
-            return
-        }
         checkGradleVersion()
         project.plugins.apply("base")
         // Create necessary tasks and extensions.