Support Native binary options in Gradle

Both project properties and per-binary DSL are available.

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

@@ -71,6 +71,13 @@ sealed class NativeBinary(
         linkerOpts.addAll(options)
     }
 
+    var binaryOptions: MutableMap<String, String> = mutableMapOf()
+
+    fun binaryOption(name: String, value: String) {
+        // TODO: report if $name is unknown?
+        binaryOptions[name] = value
+    }
+
     /** Additional arguments passed to the Kotlin/Native compiler. */
     var freeCompilerArgs: List<String>
         get() = linkTask.kotlinOptions.freeCompilerArgs

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

@@ -585,6 +585,19 @@ constructor(
     val linkerOpts: List<String>
         @Input get() = binary.linkerOpts
 
+    val binaryOptions: Map<String, String>
+        @Input get() = binary.binaryOptions
+
+    val projectWideBinaryOptions: Map<String, String>
+        @Input get() = project.properties.mapNotNull { (name, value) ->
+            val prefix = KOTLIN_NATIVE_BINARY_OPTION_PREFIX
+            if (name.startsWith(prefix) && value is String) {
+                name.removePrefix(prefix) to value
+            } else {
+                null
+            }
+        }.toMap()
+
     val processTests: Boolean
         @Input get() = binary is TestExecutable
 
@@ -628,6 +641,9 @@ constructor(
         linkerOpts.forEach {
             addArg("-linker-option", it)
         }
+        (projectWideBinaryOptions + binaryOptions).forEach { (name, value) ->
+            add("-Xbinary=$name=$value")
+        }
         exportLibraries.files.filterKlibsPassedToCompiler().forEach {
             add("-Xexport-library=${it.absolutePath}")
         }
@@ -689,6 +705,10 @@ constructor(
         validatedExportedLibraries()
         super.compile()
     }
+
+    private companion object {
+        const val KOTLIN_NATIVE_BINARY_OPTION_PREFIX = "kotlin.native.binary."
+    }
 }
 
 private class ExternalDependenciesBuilder(