Support free compiler args for binaries

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

@@ -44,16 +44,22 @@ sealed class NativeBinary(
     var debuggable: Boolean = buildType.debuggable
     var optimized: Boolean = buildType.optimized
 
+    /** Additional options passed to the linker by the Kotlin/Native compiler. */
     var linkerOpts: MutableList<String> = mutableListOf()
 
+    /** Additional options passed to the linker by the Kotlin/Native compiler. */
     fun linkerOpts(vararg options: String) {
         linkerOpts.addAll(options.toList())
     }
 
+    /** Additional options passed to the linker by the Kotlin/Native compiler. */
     fun linkerOpts(options: Iterable<String>) {
         linkerOpts.addAll(options)
     }
 
+    /** Additional arguments passed to the Kotlin/Native compiler. */
+    var freeCompilerArgs: MutableList<String> = mutableListOf()
+
     // Link task access.
     val linkTaskName: String
         get() = lowerCamelCaseName("link", name, target.targetName)

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

@@ -374,6 +374,10 @@ open class KotlinNativeLink : AbstractKotlinNativeCompile() {
     val embedBitcode: Framework.BitcodeEmbeddingMode
         get() = (binary as? Framework)?.embedBitcode ?: Framework.BitcodeEmbeddingMode.DISABLE
 
+    @get:Input
+    val freeCompilerArgs: List<String>
+        get() = binary.freeCompilerArgs
+
     override fun buildArgs(defaultsOnly: Boolean): List<String> {
         val superArgs = super.buildArgs(defaultsOnly)
         return mutableListOf<String>().apply {
@@ -388,6 +392,7 @@ open class KotlinNativeLink : AbstractKotlinNativeCompile() {
             exportLibraries.files.filterExternalKlibs(project).forEach {
                 add("-Xexport-library=${it.absolutePath}")
             }
+            addAll(freeCompilerArgs)
         }
     }