[gradle-plugin] Support custom linker options for binaries

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/KotlinNativeBinaries.kt

@@ -71,6 +71,14 @@ interface KotlinNativeBinary: ComponentWithDependencies, BuildableComponent {
      */
     val additionalCompilerOptions: Collection<String>
 
+    // DSL.
+    /**
+     * Additional options passed to a linker when this binary is built.
+     */
+    val linkerOpts: MutableList<String>
+    fun linkerOpts(values: List<String>)
+    fun linkerOpts(vararg values: String)
+
     companion object {
         val KONAN_TARGET_ATTRIBUTE = Attribute.of("org.gradle.native.kotlin.platform", String::class.java)
     }

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/KotlinNativeComponent.kt

@@ -61,6 +61,9 @@ interface KotlinNativeComponent: ComponentWithBinaries, ComponentWithDependencie
 
     // region DSL
 
+    /** Allows a user to specify targets this component is built for. */
+    var targets: List<String>
+
     /** Provides an access to component's dependencies including cinterop and jsinterop DSL */
     override fun getDependencies(): KotlinNativeDependencies
 
@@ -69,8 +72,14 @@ interface KotlinNativeComponent: ComponentWithBinaries, ComponentWithDependencie
     fun dependencies(action: Action<KotlinNativeDependencies>)
 
     /** Set native targets for this component. */
+    @Deprecated("Use the 'targets' property instead. E.g. targets = ['macos_x64', 'linux_x64']")
     fun target(vararg targets: String)
 
+    /** Provide a way to configure binaries included in this component for a particular target. */
+    fun target(target: String, action: KotlinNativeBinary.() -> Unit)
+    fun target(target: String, action: Closure<Unit>)
+    fun target(target: String, action: Action<KotlinNativeBinary>)
+
     /** Set additional compiler options for this component. */
     val extraOpts: Collection<String>
 

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/internal/AbstractKotlinNativeBinary.kt

@@ -135,4 +135,10 @@ abstract class AbstractKotlinNativeBinary(
 
     override val additionalCompilerOptions: Collection<String>
         get() = component.extraOpts
+
+    override val linkerOpts = mutableListOf<String>()
+    override fun linkerOpts(values: List<String>) = linkerOpts(*values.toTypedArray())
+    override fun linkerOpts(vararg values: String) {
+        linkerOpts.addAll(values)
+    }
 }

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/internal/AbstractKotlinNativeComponent.kt

@@ -77,11 +77,35 @@ abstract class AbstractKotlinNativeComponent @Inject constructor(
 
     override fun getImplementationDependencies(): Configuration = dependencies.implementationDependencies
 
-    // region DSL
+    // region DSL.
 
+    override var targets: List<String>
+        get() = konanTargets.get().map { it.name }
+        set(value) {
+            val hostManager = HostManager()
+            konanTargets.set(targets.map { hostManager.targetByName(it) })
+        }
+
+    override fun target(target: String, action: KotlinNativeBinary.() -> Unit) =
+        binaries.whenElementKnown {
+            if (it.konanTarget == HostManager().targetByName(target)) {
+                it.action()
+            }
+        }
+
+    override fun target(target: String, action: Closure<Unit>) =
+        target(target, ConfigureUtil.configureUsing(action))
+
+    override fun target(target: String, action: Action<KotlinNativeBinary>) =
+        target(target) { action.execute(this) }
+
+    @Deprecated("Use the 'targets' property instead. E.g. targets = ['macos_x64', 'linux_x64']")
     override fun target(vararg targets: String) {
-        val hostManager = HostManager()
-        konanTargets.set(targets.map { hostManager.targetByName(it) })
+        project.logger.warn("""
+            Kotlin/Native component's method 'target' is deprecated. Use the 'targets' property instead.
+            E.g. targets = ['macos_x64', 'linux_x64']
+        """.trimIndent())
+        this.targets = targets.toList()
     }
 
     override val extraOpts = mutableListOf<String>()

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/plugins/KotlinNativeBasePlugin.kt

@@ -32,8 +32,8 @@ import org.gradle.nativeplatform.test.tasks.RunTestExecutable
 import org.gradle.util.GradleVersion
 import org.jetbrains.kotlin.gradle.plugin.KonanPlugin
 import org.jetbrains.kotlin.gradle.plugin.experimental.CInteropSettings
+import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeLibrary
 import org.jetbrains.kotlin.gradle.plugin.experimental.internal.*
-import org.jetbrains.kotlin.gradle.plugin.experimental.internal.cinterop.CInteropSettingsImpl
 import org.jetbrains.kotlin.gradle.plugin.experimental.tasks.CInteropTask
 import org.jetbrains.kotlin.gradle.plugin.experimental.tasks.KotlinNativeCompile
 import org.jetbrains.kotlin.gradle.plugin.hasProperty
@@ -184,9 +184,7 @@ class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
     }
 
     private fun Project.addInteropTasks() {
-
         val settingsToTask = mutableMapOf<CInteropSettings, CInteropTask>()
-
         components.withType(AbstractKotlinNativeBinary::class.java) { binary ->
             binary.component.dependencies.cinterops.all { cinterop ->
                 val konanTarget = binary.konanTarget
@@ -204,6 +202,9 @@ class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
                 }
 
                 binary.klibraries.dependencies.add(dependencies.create(files(interopTask.outputFileProvider)))
+                if (binary is KotlinNativeLibrary) {
+                    binary.linkElements.get().outgoing.artifact(interopTask.outputFileProvider)
+                }
             }
         }
     }

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/experimental/tasks/KotlinNativeCompile.kt

@@ -24,10 +24,7 @@ import org.gradle.api.provider.Provider
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputFiles
 import org.gradle.api.tasks.TaskAction
-import org.jetbrains.kotlin.gradle.plugin.KonanCompilerRunner
-import org.jetbrains.kotlin.gradle.plugin.KonanPlugin
-import org.jetbrains.kotlin.gradle.plugin.addArg
-import org.jetbrains.kotlin.gradle.plugin.addKey
+import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.experimental.internal.AbstractKotlinNativeBinary
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind.*
@@ -59,6 +56,9 @@ open class KotlinNativeCompile @Inject constructor(internal val binary: Abstract
 
     val additionalCompilerOptions: Collection<String> @Input get() = binary.additionalCompilerOptions
 
+    val linkerOpts: List<String>
+        @Input get() = binary.linkerOpts
+
     val outputFile: File
         get() = outputLocationProvider.get().asFile
 
@@ -120,6 +120,8 @@ open class KotlinNativeCompile @Inject constructor(internal val binary: Abstract
                 addArg("-l", library.nameWithoutExtension)
             }
 
+            addListArg("-linkerOpts", linkerOpts)
+
             addAll(sources.files.map { it.absolutePath })
         }