Interop: support passing linker as arg to stub generator

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/main.kt

@@ -110,7 +110,7 @@ private fun processLib(ktGenRoot: String,
     val compilerOpts = config.getSpaceSeparated("compilerOpts") + additionalCompilerOpts
     val compiler = config.getProperty("compiler") ?: "clang"
     val linkerOpts = config.getSpaceSeparated("linkerOpts").toTypedArray() + additionalLinkerOpts
-    val linker = config.getProperty("linker") ?: "clang"
+    val linker = args["-linker"]?.singleOrNull() ?: config.getProperty("linker") ?: "clang"
     val excludedFunctions = config.getSpaceSeparated("excludedFunctions").toSet()
 
     val fqParts = args["-pkg"]?.singleOrNull()?.let {

buildSrc/src/main/groovy/org/jetbrains/kotlin/NativeInteropPlugin.groovy

@@ -26,6 +26,7 @@ class NamedNativeInteropConfig extends AbstractFileCollection implements Named {
 
     private List<String> compilerOpts = []
     private FileCollection headers;
+    private String linker
     private List<String> linkerOpts = []
     private FileCollection linkFiles;
     private List<String> linkTasks = []
@@ -48,6 +49,10 @@ class NamedNativeInteropConfig extends AbstractFileCollection implements Named {
         headers = headers + files
     }
 
+    void linker(String value) {
+        linker = value
+    }
+
     void linkerOpts(String... values) {
         linkerOpts.addAll(values)
     }
@@ -161,6 +166,10 @@ class NamedNativeInteropConfig extends AbstractFileCollection implements Named {
                     args "-pkg:" + pkg
                 }
 
+                if (linker != null) {
+                    args "-linker:" + linker
+                }
+
                 args compilerOpts.collect { "-copt:$it" }
                 args linkerOpts.collect { "-lopt:$it" }