JVM_IR: Add test for compiling against cross-platform Klib

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt

@@ -302,6 +302,13 @@ class K2JVMCompilerArguments : CommonCompilerArguments() {
     )
     var emitJvmTypeAnnotations: Boolean by FreezableVar(false)
 
+    @Argument(
+        value = "-Xklib",
+        valueDescription = "<path>",
+        description = "Paths to cross-platform libraries in .klib format"
+    )
+    val klibLibraries: String? by NullableStringFreezableVar(null)
+
     override fun configureAnalysisFlags(collector: MessageCollector): MutableMap<AnalysisFlag<*>, Any> {
         val result = super.configureAnalysisFlags(collector)
         result[JvmAnalysisFlags.strictMetadataVersionSemantics] = strictMetadataVersionSemantics

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt

@@ -75,6 +75,7 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
         configuration.configureExplicitContentRoots(arguments)
         configuration.configureStandardLibs(paths, arguments)
         configuration.configureAdvancedJvmOptions(arguments)
+        configuration.configureKlibPaths(arguments)
 
         if (arguments.buildFile == null && !arguments.version  && !arguments.allowNoSourceFiles &&
             (arguments.script || arguments.expression != null || arguments.freeArgs.isEmpty())) {

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/jvmArguments.kt

@@ -138,7 +138,6 @@ fun KotlinCoreEnvironment.registerJavacIfNeeded(
     return true
 }
 
-
 fun CompilerConfiguration.configureAdvancedJvmOptions(arguments: K2JVMCompilerArguments) {
 
     put(JVMConfigurationKeys.PARAMETERS_METADATA, arguments.javaParameters)
@@ -199,3 +198,11 @@ fun CompilerConfiguration.configureAdvancedJvmOptions(arguments: K2JVMCompilerAr
 
     arguments.declarationsOutputPath?.let { put(JVMConfigurationKeys.DECLARATIONS_JSON_PATH, it) }
 }
+
+fun CompilerConfiguration.configureKlibPaths(arguments: K2JVMCompilerArguments) {
+    assert(arguments.useIR || arguments.klibLibraries == null) { "Klib libraries can only be used with IR backend" }
+    arguments.klibLibraries?.split(File.pathSeparator.toRegex())
+        ?.toTypedArray()
+        ?.filterNot { it.isEmpty() }
+        ?.let { put(JVMConfigurationKeys.KLIB_PATHS, it) }
+}