Fix resources processing configuration

* Add resources processing to the K/N compilations

* Use a proper resources output path (composed from target + compilation
  rather than just compilation name)

* Fix incorrect reassignment of the resources directory

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

@@ -163,6 +163,23 @@ class NewMultiplatformIT : BaseGradleIT() {
         }
     }
 
+    @Test
+    fun testResourceProcessing() = with(Project("sample-lib", gradleVersion, "new-mpp-lib-and-app")) {
+        val targetsWithResources = listOf("jvm6", "wasm32", nativeHostTargetName)
+        val processResourcesTasks =
+            targetsWithResources.map { ":${it}ProcessResources" }
+
+        build(*processResourcesTasks.toTypedArray()) {
+            assertSuccessful()
+            assertTasksExecuted(*processResourcesTasks.toTypedArray())
+
+            targetsWithResources.forEach {
+                assertFileExists("build/processedResources/$it/main/commonMainResource.txt")
+                assertFileExists("build/processedResources/$it/main/${it}MainResource.txt")
+            }
+        }
+    }
+
     @Test
     fun testSourceSetCyclicDependencyDetection() = with(Project("sample-lib", gradleVersion, "new-mpp-lib-and-app")) {
         setupWorkingDir()

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/commonMain/resources/commonMainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/jvm6Main/resources/jvm6MainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/linux64Main/resources/linux64MainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/macos64Main/resources/macos64MainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/mingw64Main/resources/mingw64MainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/nodeJsMain/resources/nodeJsMainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-lib-and-app/sample-lib/src/wasm32Main/resources/wasm32MainResource.txt

@@ -0,0 +1 @@
+resource

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinTargetConfigurator.kt

@@ -125,11 +125,6 @@ abstract class AbstractKotlinTargetConfigurator<KotlinTargetType : KotlinTarget>
     ) {
         val project = compilation.target.project
 
-        compilation.output.setResourcesDir(Callable {
-            val classesDirName = "resources/" + compilation.compilationName
-            File(project.buildDir, classesDirName)
-        })
-
         val resourcesTask = project.tasks.maybeCreate(compilation.processResourcesTaskName, ProcessResources::class.java)
         resourcesTask.description = "Processes $resourceSet."
         DslObject(resourcesTask).conventionMapping.map("destinationDir") { compilation.output.resourcesDir }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/KotlinCompilationFactory.kt

@@ -10,13 +10,14 @@ import org.gradle.api.NamedDomainObjectFactory
 import org.gradle.api.Project
 import org.jetbrains.kotlin.gradle.plugin.KotlinCompilation
 import org.jetbrains.kotlin.gradle.plugin.KotlinTarget
+import java.util.concurrent.Callable
 
 interface KotlinCompilationFactory<T: KotlinCompilation> : NamedDomainObjectFactory<T> {
     val itemClass: Class<T>
 }
 
 private fun KotlinTarget.createCompilationOutput(name: String) =
-    KotlinCompilationOutput(project, project.buildDir.resolve("processedResources/$name"))
+    KotlinCompilationOutput(project, Callable { project.buildDir.resolve("processedResources/$targetName/$name") })
 
 class KotlinCommonCompilationFactory(
     val target: KotlinOnlyTarget<KotlinCommonCompilation>

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/mpp/kotlinCompilations.kt

@@ -269,7 +269,7 @@ class KotlinNativeCompilation(
     override val target: KotlinNativeTarget,
     name: String,
     override val output: SourceSetOutput
-) : AbstractKotlinCompilation(target, name) {
+) : AbstractKotlinCompilation(target, name), KotlinCompilationWithResources {
 
     private val project: Project
         get() = target.project
@@ -369,6 +369,8 @@ class KotlinNativeCompilation(
         getBinary(NativeOutputKind.valueOf(kind.toUpperCase()), NativeBuildType.valueOf(buildType.toUpperCase()))
 
     // Naming
+    override val processResourcesTaskName: String
+        get() = disambiguateName("processResources")
 
     val linkAllTaskName: String
         get() = lowerCamelCaseName(