[gradle][experimental] publish the per component pom into variant generated publications

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

@@ -1,8 +1,10 @@
 package org.jetbrains.kotlin.gradle.plugin.experimental
 
+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.ComponentWithBinaries
 import org.gradle.language.ComponentWithDependencies
@@ -43,6 +45,7 @@ interface KotlinNativeComponent: ComponentWithBinaries, ComponentWithDependencie
     fun extraOpts(vararg values: Any)
     fun extraOpts(values: List<Any>)
 
+    fun pom(action: Action<MavenPom>)
     // endregion
 }
 

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

@@ -1,10 +1,12 @@
 package org.jetbrains.kotlin.gradle.plugin.experimental.internal
 
+import org.gradle.api.Action
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.internal.file.FileOperations
 import org.gradle.api.internal.provider.LockableSetProperty
 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
@@ -47,6 +49,7 @@ abstract class AbstractKotlinNativeComponent @Inject constructor(
     private val dependencies: DefaultComponentDependencies = objectFactory.newInstance(
             DefaultComponentDependencies::class.java,
             names.withSuffix("implementation"))
+    internal val poms = mutableListOf<Action<MavenPom>>()
 
     override fun getDependencies() = dependencies
 
@@ -66,5 +69,8 @@ abstract class AbstractKotlinNativeComponent @Inject constructor(
         extraOpts.addAll(values.map { it.toString() })
     }
 
+    override fun pom(action: Action<MavenPom>) {
+        poms.add(action)
+    }
     // endregion
 }

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

@@ -8,6 +8,8 @@ import org.gradle.api.internal.attributes.ImmutableAttributesFactory
 import org.gradle.api.internal.project.ProjectInternal
 import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Provider
+import org.gradle.api.publish.PublishingExtension
+import org.gradle.api.publish.maven.MavenPublication
 import org.gradle.internal.reflect.Instantiator
 import org.gradle.language.cpp.CppBinary.DEBUGGABLE_ATTRIBUTE
 import org.gradle.language.cpp.CppBinary.OPTIMIZED_ATTRIBUTE
@@ -209,6 +211,24 @@ class KotlinNativePlugin @Inject constructor(val attributesFactory: ImmutableAtt
 
             addBinariesForMainComponents(group, version)
             addBinariesForTestComponents(group, version)
+            pluginManager.withPlugin("maven-publish") {
+                val publishingExtension = project.extensions.getByType(PublishingExtension::class.java)
+                val components = project.components.withType(KotlinNativeMainComponent::class.java)
+                publishingExtension.publications.forEach { publication ->
+                    (publication as? MavenPublication)?.apply {
+                        val component = components.find {
+                            it.name == publication.name
+                                    || publication.name.startsWith("${it.name}Release")
+                                    || publication.name.startsWith("${it.name}Debug")
+                        }
+                        component?.let {
+                            it.poms.forEach {
+                                publication.pom(it)
+                            }
+                        }
+                    }
+                }
+            }
         }
     }
 }