[gradle-plugin] Support basic cinterop

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

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.experimental
+
+import groovy.lang.Closure
+import org.gradle.api.Action
+import org.gradle.api.Named
+import org.gradle.api.file.FileCollection
+import org.jetbrains.kotlin.konan.target.KonanTarget
+
+interface CInteropSettings {
+
+    interface IncludeDirectories {
+        fun allHeaders(vararg includeDirs: Any)
+        fun allHeaders(includeDirs: Collection<Any>)
+
+        fun headerFilterOnly(vararg includeDirs: Any)
+        fun headerFilterOnly(includeDirs: Collection<Any>)
+    }
+
+    fun defFile(file: Any)
+
+    fun packageName(value: String)
+
+    fun header(file: Any) = headers(file)
+    fun headers(vararg files: Any)
+    fun headers(files: FileCollection)
+
+    fun includeDirs(vararg values: Any)
+    fun includeDirs(closure: Closure<Unit>)
+    fun includeDirs(action: Action<IncludeDirectories>)
+    fun includeDirs(configure: IncludeDirectories.() -> Unit)
+
+    fun compilerOpts(vararg values: String)
+    fun compilerOpts(values: List<String>)
+
+    fun linkerOpts(vararg values: String)
+    fun linkerOpts(values: List<String>)
+
+    fun extraOpts(vararg values: Any)
+    fun extraOpts(values: List<Any>)
+}
+
+interface CInterop : Named, CInteropSettings {
+    fun target(target: String): CInteropSettings
+    fun target(target: KonanTarget): CInteropSettings
+
+    fun target(target: String, action: CInteropSettings.() -> Unit)
+    fun target(target: String, action: Closure<Unit>)
+    fun target(target: String, action: Action<CInteropSettings>)
+
+    fun target(target: KonanTarget, action: CInteropSettings.() -> Unit)
+    fun target(target: KonanTarget, action: Closure<Unit>)
+    fun target(target: KonanTarget, action: Action<CInteropSettings>)
+}

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

@@ -16,22 +16,15 @@
 
 package org.jetbrains.kotlin.gradle.plugin.experimental
 
-import org.gradle.api.artifacts.Configuration
 import org.gradle.api.attributes.Attribute
-import org.gradle.api.attributes.AttributeContainer
 import org.gradle.api.component.BuildableComponent
 import org.gradle.api.component.PublishableComponent
 import org.gradle.api.file.FileCollection
-import org.gradle.api.file.RegularFile
-import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
 import org.gradle.language.ComponentWithDependencies
 import org.gradle.language.ComponentWithOutputs
-import org.gradle.language.nativeplatform.ComponentWithLinkUsage
-import org.gradle.language.nativeplatform.internal.ComponentWithNames
 import org.gradle.language.nativeplatform.internal.ConfigurableComponentWithLinkUsage
 import org.gradle.language.nativeplatform.internal.ConfigurableComponentWithRuntimeUsage
-import org.gradle.nativeplatform.Linkage
 import org.gradle.nativeplatform.test.TestComponent
 import org.jetbrains.kotlin.gradle.plugin.experimental.internal.KotlinNativePlatform
 import org.jetbrains.kotlin.gradle.plugin.experimental.tasks.KotlinNativeCompile

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

@@ -16,18 +16,27 @@
 
 package org.jetbrains.kotlin.gradle.plugin.experimental
 
+import groovy.lang.Closure
 import org.gradle.api.Action
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.provider.Provider
 import org.gradle.api.provider.SetProperty
 import org.gradle.api.publish.maven.MavenPom
 import org.gradle.language.BinaryCollection
+import org.gradle.language.ComponentDependencies
 import org.gradle.language.ComponentWithBinaries
 import org.gradle.language.ComponentWithDependencies
 import org.gradle.nativeplatform.test.TestSuiteComponent
 import org.jetbrains.kotlin.gradle.plugin.experimental.sourcesets.KotlinNativeSourceSet
 import org.jetbrains.kotlin.konan.target.KonanTarget
 
+interface KotlinNativeDependencies: ComponentDependencies {
+    fun cinterop(name: String): CInterop
+    fun cinterop(name: String, action: CInterop.() -> Unit)
+    fun cinterop(name: String, action: Closure<Unit>)
+    fun cinterop(name: String, action: Action<CInterop>)
+}
+
 /**
  *  Class representing a Kotlin/Native component: application or library (both klib and dynamic)
  *  built for different targets.
@@ -52,6 +61,13 @@ interface KotlinNativeComponent: ComponentWithBinaries, ComponentWithDependencie
 
     // region DSL
 
+    /** Provides an access to component's dependencies including cinterop and jsinterop DSL */
+    override fun getDependencies(): KotlinNativeDependencies
+
+    fun dependencies(action: KotlinNativeDependencies.() -> Unit)
+    fun dependencies(action: Closure<Unit>)
+    fun dependencies(action: Action<KotlinNativeDependencies>)
+
     /** Set native targets for this component. */
     fun target(vararg targets: String)
 

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

@@ -37,7 +37,6 @@ import org.gradle.nativeplatform.OperatingSystemFamily
 import org.gradle.nativeplatform.toolchain.NativeToolChain
 import org.jetbrains.kotlin.gradle.plugin.experimental.ComponentWithBaseName
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeBinary
-import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeComponent
 import org.jetbrains.kotlin.gradle.plugin.experimental.sourcesets.KotlinNativeSourceSet
 import org.jetbrains.kotlin.gradle.plugin.experimental.tasks.KotlinNativeCompile
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
@@ -94,8 +93,8 @@ abstract class AbstractKotlinNativeBinary(
         get() = sourceSet.getAllSources(konanTarget)
 
     private val dependencies = objects.newInstance<DefaultComponentDependencies>(
-            DefaultComponentDependencies::class.java,
+        DefaultComponentDependencies::class.java,
-            name + "Implementation"
+        name + "Implementation"
     ).apply {
         implementationDependencies.extendsFrom(componentImplementation)
     }

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

@@ -16,7 +16,9 @@
 
 package org.jetbrains.kotlin.gradle.plugin.experimental.internal
 
+import groovy.lang.Closure
 import org.gradle.api.Action
+import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.internal.file.FileOperations
 import org.gradle.api.internal.provider.LockableSetProperty
@@ -24,20 +26,23 @@ import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Property
 import org.gradle.api.publish.maven.MavenPom
 import org.gradle.language.internal.DefaultBinaryCollection
-import org.gradle.language.internal.DefaultComponentDependencies
 import org.gradle.language.nativeplatform.internal.ComponentWithNames
 import org.gradle.language.nativeplatform.internal.DefaultNativeComponent
 import org.gradle.language.nativeplatform.internal.Names
+import org.gradle.util.ConfigureUtil
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeBinary
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeComponent
+import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeDependencies
 import org.jetbrains.kotlin.gradle.plugin.experimental.sourcesets.KotlinNativeSourceSetImpl
 import org.jetbrains.kotlin.konan.target.HostManager
 import org.jetbrains.kotlin.konan.target.KonanTarget
+import org.jetbrains.kotlin.utils.addToStdlib.assertedCast
 import javax.inject.Inject
 
 abstract class AbstractKotlinNativeComponent @Inject constructor(
         private val name: String,
         override val sources: KotlinNativeSourceSetImpl,
+        val project: Project,
         val objectFactory: ObjectFactory,
         fileOperations: FileOperations
 ) : DefaultNativeComponent(fileOperations),
@@ -62,9 +67,10 @@ abstract class AbstractKotlinNativeComponent @Inject constructor(
     private val names = Names.of(name)
     override fun getNames(): Names = names
 
-    private val dependencies: DefaultComponentDependencies = objectFactory.newInstance(
+    private val dependencies: KotlinNativeDependenciesImpl = objectFactory.newInstance(
-            DefaultComponentDependencies::class.java,
+        KotlinNativeDependenciesImpl::class.java,
-            names.withSuffix("implementation"))
+        project,
+        names.withSuffix("implementation"))
     internal val poms = mutableListOf<Action<MavenPom>>()
 
     override fun getDependencies() = dependencies
@@ -92,5 +98,16 @@ abstract class AbstractKotlinNativeComponent @Inject constructor(
     override var publishJavadoc: Boolean = true
     override var publishSources: Boolean = true
 
+    override fun dependencies(action: KotlinNativeDependencies.() -> Unit) {
+        dependencies.action()
+    }
+
+    override fun dependencies(action: Closure<Unit>) =
+        dependencies(ConfigureUtil.configureUsing(action))
+
+    override fun dependencies(action: Action<KotlinNativeDependencies>) {
+        action.execute(dependencies)
+    }
+
     // endregion
 }

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

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.experimental.internal
+
+import groovy.lang.Closure
+import org.gradle.api.Action
+import org.gradle.api.Project
+import org.gradle.api.artifacts.ConfigurationContainer
+import org.gradle.language.internal.DefaultComponentDependencies
+import org.gradle.util.ConfigureUtil
+import org.jetbrains.kotlin.gradle.plugin.experimental.CInterop
+import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeDependencies
+import org.jetbrains.kotlin.gradle.plugin.experimental.internal.cinterop.CInteropImpl
+import javax.inject.Inject
+
+open class KotlinNativeDependenciesImpl @Inject constructor(
+    private val project: Project,
+    configurations: ConfigurationContainer,
+    implementationName: String
+) : DefaultComponentDependencies(configurations, implementationName),
+    KotlinNativeDependencies {
+
+    internal val cinterops = project.container(CInteropImpl::class.java) { name ->
+        CInteropImpl(project, name)
+    }
+
+    override fun cinterop(name: String) = cinterops.maybeCreate(name)
+
+    override fun cinterop(name: String, action: CInterop.() -> Unit) {
+        cinterop(name).apply { action() }
+    }
+
+    override fun cinterop(name: String, action: Closure<Unit>) {
+        cinterop(name, ConfigureUtil.configureUsing(action))
+    }
+
+    override fun cinterop(name: String, action: Action<CInterop>) {
+        cinterop(name).apply { action.execute(this) }
+    }
+}

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

@@ -32,7 +32,6 @@ import org.gradle.api.provider.Provider
 import org.gradle.language.cpp.internal.DefaultUsageContext
 import org.gradle.nativeplatform.Linkage
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeExecutable
-import org.jetbrains.kotlin.gradle.plugin.experimental.sourcesets.KotlinNativeSourceSet
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
 import javax.inject.Inject
 

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

@@ -31,7 +31,6 @@ import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
 import org.gradle.language.cpp.internal.DefaultUsageContext
 import org.gradle.nativeplatform.Linkage
-import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeFramework
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeLibrary
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
 import javax.inject.Inject

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

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.gradle.plugin.experimental.internal
 
+import org.gradle.api.Project
 import org.gradle.api.component.ComponentWithVariants
 import org.gradle.api.component.SoftwareComponent
 import org.gradle.api.internal.component.SoftwareComponentInternal
@@ -36,9 +37,10 @@ import javax.inject.Inject
 open class KotlinNativeMainComponent @Inject constructor(
         name: String,
         sources: KotlinNativeSourceSetImpl,
+        project: Project,
         objectFactory: ObjectFactory,
         fileOperations: FileOperations
-) : AbstractKotlinNativeComponent(name, sources, objectFactory, fileOperations),
+) : AbstractKotlinNativeComponent(name, sources, project, objectFactory, fileOperations),
     PublicationAwareComponent,
     ProductionComponent {
 

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

@@ -25,7 +25,6 @@ import org.gradle.api.internal.file.FileOperations
 import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
-import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeTestComponent
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeTestExecutable
 import org.jetbrains.kotlin.gradle.plugin.experimental.sourcesets.KotlinNativeSourceSet
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind

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

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.gradle.plugin.experimental.internal
 
+import org.gradle.api.Project
 import org.gradle.api.internal.file.FileOperations
 import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Property
@@ -29,12 +30,13 @@ import org.jetbrains.kotlin.gradle.plugin.experimental.sourcesets.KotlinNativeSo
 import javax.inject.Inject
 
 open class KotlinNativeTestSuite @Inject constructor(
-        name: String,
+    name: String,
-        sources: KotlinNativeSourceSetImpl,
+    sources: KotlinNativeSourceSetImpl,
-        override val testedComponent: KotlinNativeComponent,
+    override val testedComponent: KotlinNativeComponent,
-        objectFactory: ObjectFactory,
+    project: Project,
-        fileOperations: FileOperations
+    objectFactory: ObjectFactory,
-) : AbstractKotlinNativeComponent(name, sources, objectFactory, fileOperations),
+    fileOperations: FileOperations
+) : AbstractKotlinNativeComponent(name, sources, project, objectFactory, fileOperations),
     KotlinNativeTestComponent {
 
     init {

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

@@ -0,0 +1,96 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.experimental.internal.cinterop
+
+import groovy.lang.Closure
+import org.gradle.api.Action
+import org.gradle.api.DomainObjectCollection
+import org.gradle.api.NamedDomainObjectContainer
+import org.gradle.api.Project
+import org.gradle.api.file.FileCollection
+import org.gradle.util.ConfigureUtil
+import org.jetbrains.kotlin.gradle.plugin.experimental.CInterop
+import org.jetbrains.kotlin.gradle.plugin.experimental.CInteropSettings
+import org.jetbrains.kotlin.gradle.plugin.experimental.CInteropSettings.IncludeDirectories
+import org.jetbrains.kotlin.konan.target.HostManager
+import org.jetbrains.kotlin.konan.target.KonanTarget
+import javax.inject.Inject
+
+open class CInteropImpl @Inject constructor(
+    private val project: Project,
+    private val name: String
+): CInterop {
+
+    private val String.konanTarget: KonanTarget
+        get() = HostManager().targetByName(this)
+
+    override fun getName(): String = name
+
+    private val platformSettings: DomainObjectCollection<CInteropSettingsImpl> =
+        project.container(CInteropSettingsImpl::class.java)
+
+    private val targetToSettings: MutableMap<KonanTarget, CInteropSettingsImpl> = mutableMapOf()
+
+    // DSL.
+    override fun target(target: String): CInteropSettings = target(target.konanTarget)
+
+    override fun target(target: KonanTarget): CInteropSettings =
+        targetToSettings.getOrPut(target) {
+            CInteropSettingsImpl(project, name, target).also {
+                platformSettings.add(it)
+            }
+        }
+
+    override fun target(target: String, action: CInteropSettings.() -> Unit) = target(target.konanTarget, action)
+    override fun target(target: String, action: Closure<Unit>) = target(target.konanTarget, action)
+    override fun target(target: String, action: Action<CInteropSettings>) = target(target.konanTarget, action)
+
+    override fun target(target: KonanTarget, action: CInteropSettings.() -> Unit) =
+        target(target).action()
+
+    override fun target(target: KonanTarget, action: Closure<Unit>) =
+        target(target, ConfigureUtil.configureUsing(action))
+
+    override fun target(target: KonanTarget, action: Action<CInteropSettings>) {
+        action.execute(target(target))
+    }
+
+    override fun defFile(file: Any) = platformSettings.all { it.defFile(file) }
+
+    override fun packageName(value: String) = platformSettings.all { it.packageName(value) }
+
+    override fun headers(vararg files: Any) = platformSettings.all { it.headers(*files) }
+    override fun headers(files: FileCollection) = platformSettings.all { it.headers(files) }
+
+    override fun includeDirs(vararg values: Any) =
+        platformSettings.all {it.includeDirs(*values) }
+    override fun includeDirs(closure: Closure<Unit>) =
+        platformSettings.all { it.includeDirs(closure) }
+    override fun includeDirs(action: Action<IncludeDirectories>) =
+        platformSettings.all { it.includeDirs(action) }
+    override fun includeDirs(configure: IncludeDirectories.() -> Unit) =
+        platformSettings.all { it.includeDirs(configure) }
+
+    override fun compilerOpts(vararg values: String) = platformSettings.all { it.compilerOpts(*values) }
+    override fun compilerOpts(values: List<String>) = platformSettings.all { it.compilerOpts(values) }
+
+    override fun linkerOpts(vararg values: String) = platformSettings.all { it.linkerOpts(*values) }
+    override fun linkerOpts(values: List<String>) = platformSettings.all { it.linkerOpts(values) }
+
+    override fun extraOpts(vararg values: Any) = platformSettings.all { it.extraOpts(*values) }
+    override fun extraOpts(values: List<Any>) = platformSettings.all { it.extraOpts(values) }
+}

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

@@ -0,0 +1,100 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.experimental.internal.cinterop
+
+import groovy.lang.Closure
+import org.gradle.api.Action
+import org.gradle.api.Named
+import org.gradle.api.Project
+import org.gradle.api.file.FileCollection
+import org.gradle.util.ConfigureUtil
+import org.jetbrains.kotlin.gradle.plugin.experimental.CInteropSettings
+import org.jetbrains.kotlin.gradle.plugin.experimental.CInteropSettings.IncludeDirectories
+import org.jetbrains.kotlin.konan.target.KonanTarget
+import java.io.File
+import javax.inject.Inject
+
+open class CInteropSettingsImpl @Inject constructor(
+    private val project: Project,
+    val baseName: String,
+    val konanTarget: KonanTarget
+) : CInteropSettings,
+    Named
+{
+    inner class IncludeDirectoriesSpecImpl: IncludeDirectories {
+        var allHeadersDirs: FileCollection   = project.files()
+        var headerFilterDirs: FileCollection = project.files()
+
+        override fun allHeaders(vararg includeDirs: Any) = allHeaders(includeDirs.toList())
+        override fun allHeaders(includeDirs: Collection<Any>) {
+            allHeadersDirs += project.files(*includeDirs.toTypedArray())
+        }
+
+        override fun headerFilterOnly(vararg includeDirs: Any) = headerFilterOnly(includeDirs.toList())
+        override fun headerFilterOnly(includeDirs: Collection<Any>) {
+            headerFilterDirs += project.files(*includeDirs.toTypedArray())
+        }
+    }
+
+    override fun getName(): String = "$baseName${konanTarget.name.capitalize()}"
+
+    var defFile: File = project.projectDir.resolve("src/main/c_interop/$baseName.def")
+    var packageName: String? = null
+
+    val compilerOpts = mutableListOf<String>()
+    val linkerOpts   = mutableListOf<String>()
+    val extraOpts    = mutableListOf<String>()
+
+    val includeDirs = IncludeDirectoriesSpecImpl()
+    var headers: FileCollection = project.files()
+
+    // DSL methods.
+
+    override fun defFile(file: Any) {
+        defFile = project.file(file)
+    }
+
+    override fun packageName(value: String) {
+        packageName = value
+    }
+
+    override fun header(file: Any) = headers(file)
+    override fun headers(vararg files: Any) = headers(project.files(files))
+    override fun headers(files: FileCollection) {
+        headers += files
+    }
+
+    override fun includeDirs(vararg values: Any) = includeDirs.allHeaders(values.toList())
+    override fun includeDirs(closure: Closure<Unit>) = includeDirs(ConfigureUtil.configureUsing(closure))
+    override fun includeDirs(action: Action<IncludeDirectories>) = includeDirs { action.execute(this) }
+    override fun includeDirs(configure: IncludeDirectories.() -> Unit) = includeDirs.configure()
+
+    override fun compilerOpts(vararg values: String) = compilerOpts(values.toList())
+    override fun compilerOpts(values: List<String>) {
+        compilerOpts.addAll(values)
+    }
+
+    override fun linkerOpts(vararg values: String) = linkerOpts(values.toList())
+    override fun linkerOpts(values: List<String>) {
+        linkerOpts.addAll(values)
+    }
+
+    override fun extraOpts(vararg values: Any) = extraOpts(values.toList())
+    override fun extraOpts(values: List<Any>) {
+        extraOpts.addAll(values.map { it.toString() })
+    }
+}

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

@@ -20,23 +20,21 @@ import org.gradle.api.DefaultTask
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.Task
-import org.gradle.api.component.SoftwareComponentContainer
-import org.gradle.api.file.DirectoryProperty
-import org.gradle.api.file.RegularFile
 import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.internal.FeaturePreviews
 import org.gradle.api.internal.project.ProjectInternal
 import org.gradle.api.plugins.BasePlugin
 import org.gradle.api.plugins.HelpTasksPlugin
-import org.gradle.api.provider.Provider
-import org.gradle.api.provider.ProviderFactory
 import org.gradle.api.tasks.TaskContainer
 import org.gradle.language.base.plugins.LifecycleBasePlugin
 import org.gradle.language.plugins.NativeBasePlugin
 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.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
 import org.jetbrains.kotlin.gradle.plugin.konanCompilerDownloadDir
@@ -45,7 +43,6 @@ import org.jetbrains.kotlin.gradle.plugin.tasks.KonanCompilerDownloadTask
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
 import org.jetbrains.kotlin.konan.target.HostManager
 import org.jetbrains.kotlin.konan.target.KonanTarget
-import java.io.File
 
 class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
 
@@ -83,6 +80,18 @@ class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
     private val KonanTarget.canRunOnHost: Boolean
         get() = this == HostManager.host
 
+    private fun lowerCamelCase(vararg components: String) =
+        if (components.isEmpty()) {
+            ""
+        } else {
+            buildString {
+                append(components[0].decapitalize())
+                for (i in 1 until components.size) {
+                    append(components[i].capitalize())
+                }
+            }
+        }
+
     private fun Project.addTargetInfoTask() = tasks.create("targets").apply {
         group = HelpTasksPlugin.HELP_GROUP
         description = "Prints Kotlin/Native targets available for this project"
@@ -174,6 +183,31 @@ 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
+                val settings = cinterop.target(konanTarget)
+
+                val interopTask = settingsToTask.getOrPut(settings) {
+                    tasks.create(
+                        lowerCamelCase("cinterop", cinterop.name, konanTarget.name),
+                        CInteropTask::class.java,
+                        settings
+                    ).apply {
+                        group = INTEROP_GROUP
+                        description = "Generates Kotlin/Native interop library '${cinterop.name}' for target '${konanTarget.name}'"
+                    }
+                }
+
+                binary.klibraries.dependencies.add(dependencies.create(files(interopTask.outputFileProvider)))
+            }
+        }
+    }
+
     private fun ProjectInternal.checkGradleMetadataFeature() {
         val metadataEnabled = gradle.services
             .get(FeaturePreviews::class.java)
@@ -213,12 +247,15 @@ class KotlinNativeBasePlugin: Plugin<ProjectInternal> {
         addCompilerDownloadingTask()
 
         addCompilationTasks()
+        addInteropTasks()
         addTargetInfoTask()
     }
 
     companion object {
         const val LANGUAGE_NAME = "KotlinNative"
         const val SOURCE_SETS_EXTENSION = "sourceSets"
+
+        const val INTEROP_GROUP = "interop"
     }
 
 }

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

@@ -265,7 +265,7 @@ class KotlinNativePlugin @Inject constructor(val attributesFactory: ImmutableAtt
         val mainSourceSet = sourceSets.create(MAIN_SOURCE_SET_NAME).apply {
             kotlin.srcDir("src/$MAIN_SOURCE_SET_NAME/kotlin")
             component = objectFactory
-                    .newInstance(KotlinNativeMainComponent::class.java, name, this)
+                    .newInstance(KotlinNativeMainComponent::class.java, name, this, project)
                     .apply {
                         // Override the default component base name.
                         baseName.set(project.name)
@@ -276,7 +276,7 @@ class KotlinNativePlugin @Inject constructor(val attributesFactory: ImmutableAtt
         sourceSets.create(TEST_SOURCE_SET_NAME).apply {
             kotlin.srcDir("src/$TEST_SOURCE_SET_NAME/kotlin")
             component = objectFactory
-                    .newInstance(KotlinNativeTestSuite::class.java, name, this, mainSourceSet.component)
+                    .newInstance(KotlinNativeTestSuite::class.java, name, this, mainSourceSet.component, project)
                     .apply {
                         project.components.add(this)
                     }

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

@@ -22,6 +22,7 @@ import org.gradle.api.Named
 import org.gradle.api.file.FileCollection
 import org.gradle.api.file.SourceDirectorySet
 import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeComponent
+import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeDependencies
 import org.jetbrains.kotlin.gradle.plugin.experimental.internal.AbstractKotlinNativeComponent
 import org.jetbrains.kotlin.konan.target.KonanTarget
 
@@ -59,4 +60,10 @@ interface KotlinNativeSourceSet: Named {
     fun target(targets: Iterable<String>, configureClosure: Closure<*>): KotlinNativeSourceSet
     fun target(targets: Iterable<String>, configureAction: Action<in SourceDirectorySet>): KotlinNativeSourceSet
     fun target(targets: Iterable<String>, configureLambda: SourceDirectorySet.() -> Unit): KotlinNativeSourceSet
+
+    val dependencies: KotlinNativeDependencies
+
+    fun dependencies(action: KotlinNativeDependencies.() -> Unit)
+    fun dependencies(action: Closure<Unit>)
+    fun dependencies(action: Action<KotlinNativeDependencies>)
 }

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

@@ -24,6 +24,7 @@ import org.gradle.api.file.SourceDirectorySet
 import org.gradle.api.internal.file.SourceDirectorySetFactory
 import org.gradle.api.internal.project.ProjectInternal
 import org.gradle.util.ConfigureUtil.configure
+import org.jetbrains.kotlin.gradle.plugin.experimental.KotlinNativeDependencies
 import org.jetbrains.kotlin.gradle.plugin.experimental.internal.AbstractKotlinNativeComponent
 import org.jetbrains.kotlin.konan.target.HostManager
 import org.jetbrains.kotlin.konan.target.KonanTarget
@@ -105,5 +106,13 @@ open class KotlinNativeSourceSetImpl @Inject constructor(
 
     override fun target(vararg targets: String, configureAction: Action<in SourceDirectorySet>) =
             target(targets.toList(), configureAction)
+
+    override val dependencies: KotlinNativeDependencies
+            get() = component.dependencies
+
+    override fun dependencies(action: KotlinNativeDependencies.() -> Unit) = component.dependencies(action)
+    override fun dependencies(action: Closure<Unit>) = component.dependencies(action)
+    override fun dependencies(action: Action<KotlinNativeDependencies>) = component.dependencies(action)
+
     // endregion
 }

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

@@ -0,0 +1,122 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.gradle.plugin.experimental.tasks
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.FileCollection
+import org.gradle.api.tasks.*
+import org.jetbrains.kotlin.gradle.plugin.*
+import org.jetbrains.kotlin.gradle.plugin.experimental.internal.cinterop.CInteropSettingsImpl
+import org.jetbrains.kotlin.konan.target.CompilerOutputKind
+import org.jetbrains.kotlin.konan.target.KonanTarget
+import java.io.File
+import javax.inject.Inject
+
+open class CInteropTask @Inject constructor(val settings: CInteropSettingsImpl): DefaultTask() {
+
+    val konanTarget: KonanTarget
+        @Internal get() = settings.konanTarget
+
+    val outputFileName: String
+        @Internal get() = with(CompilerOutputKind.LIBRARY) {
+            val prefix = prefix(konanTarget)
+            val suffix = suffix(konanTarget)
+            return "$prefix$baseName$suffix"
+        }
+
+    val outputFile: File
+        get() = outputFileProvider.get().asFile
+
+    // Inputs and outputs.
+
+    @OutputFile
+    val outputFileProvider = newOutputFile().apply {
+        set { project.buildDir.resolve("cinterop/$baseName/$targetName/$outputFileName") }
+    }
+
+    val baseName: String
+        @Input get() = settings.baseName
+
+    val targetName: String
+        @Input get() = konanTarget.name
+
+    val defFile: File
+        @InputFile get() = settings.defFile
+
+    val packageName: String?
+        @Optional @Input get() = settings.packageName
+
+    val compilerOpts: List<String>
+        @Input get() = settings.compilerOpts
+
+    val linkerOpts: List<String>
+        @Input get() = settings.linkerOpts
+
+    val headers: FileCollection
+        @InputFiles get() = settings.headers
+
+    val allHeadersDirs: Set<File>
+        @Input get() = settings.includeDirs.allHeadersDirs.files
+
+    val headerFilterDirs: Set<File>
+        @Input get() = settings.includeDirs.headerFilterDirs.files
+
+    val extraOpts: List<String>
+        @Input get() = settings.extraOpts
+
+
+    // Task action.
+    @TaskAction
+    fun processInterop() {
+        val args = mutableListOf<String>().apply {
+            addArg("-o", outputFile.absolutePath)
+
+            addArgIfNotNull("-target", konanTarget.visibleName)
+            addArgIfNotNull("-def", defFile.canonicalPath)
+            addArgIfNotNull("-pkg", packageName)
+
+            addFileArgs("-h", headers)
+
+            compilerOpts.forEach {
+                addArg("-copt", it)
+            }
+
+            linkerOpts.forEach {
+                addArg("-lopt", it)
+            }
+
+            addArgs("-copt", allHeadersDirs.map { "-I${it.absolutePath}" })
+            addArgs("-headerFilterAdditionalSearchPrefix", headerFilterDirs.map { it.absolutePath })
+
+            /* TODO: Support dependencies
+            addArgs("-repo", libraries.repos.map { it.canonicalPath })
+
+            addFileArgs("-library", libraries.files)
+            addArgs("-library", libraries.namedKlibs)
+            addArgs("-library", libraries.artifacts.map { it.artifact.canonicalPath })
+
+            addKey("-nodefaultlibs", noDefaultLibs)
+            */
+
+            addAll(extraOpts)
+        }
+
+        outputFile.parentFile.mkdirs()
+        KonanInteropRunner(project).run(args)
+    }
+
+}