Get first platform from platformCompilations instead host platform.

Fixed #KMM-234

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/metadata/KotlinMetadataTargetConfigurator.kt

@@ -262,7 +262,12 @@ class KotlinMetadataTargetConfigurator(kotlinPluginVersion: String) :
         val isNativeSourceSet = platformCompilations.all { compilation -> compilation.target is KotlinNativeTarget }
 
         val compilationFactory: KotlinCompilationFactory<out AbstractKotlinCompilation<*>> = when {
-            isNativeSourceSet -> KotlinSharedNativeCompilationFactory(target)
+            isNativeSourceSet -> KotlinSharedNativeCompilationFactory(
+                target,
+                //get FIRST platform for metadata compiling
+                //todo: get commonized platform libraries for metadata compiling
+                (platformCompilations.first() as KotlinNativeCompilation).konanTarget
+            )
             else -> KotlinCommonCompilationFactory(target)
         }
 

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

@@ -97,8 +97,8 @@ class KotlinNativeCompilation(
         get() = compileKotlinTask.kotlinOptions
 }
 
-class KotlinSharedNativeCompilation(override val target: KotlinMetadataTarget, name: String) :
-    AbstractKotlinNativeCompilation(target, HostManager.host, name),
+class KotlinSharedNativeCompilation(override val target: KotlinMetadataTarget, konanTarget: KonanTarget, name: String) :
+    AbstractKotlinNativeCompilation(target, konanTarget, name),
     KotlinMetadataCompilation<KotlinCommonOptions> {
 
     override val friendArtifacts: FileCollection

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

@@ -7,6 +7,7 @@
 package org.jetbrains.kotlin.gradle.plugin.mpp
 
 import org.jetbrains.kotlin.konan.target.HostManager
+import org.jetbrains.kotlin.konan.target.KonanTarget
 
 class KotlinNativeCompilationFactory(
     val target: KotlinNativeTarget
@@ -24,11 +25,12 @@ class KotlinNativeCompilationFactory(
 }
 
 class KotlinSharedNativeCompilationFactory(
-    val target: KotlinMetadataTarget
+    val target: KotlinMetadataTarget,
+    val konanTarget: KonanTarget
 ): KotlinCompilationFactory<KotlinSharedNativeCompilation> {
     override val itemClass: Class<KotlinSharedNativeCompilation>
         get() = KotlinSharedNativeCompilation::class.java
 
     override fun create(name: String): KotlinSharedNativeCompilation =
-        KotlinSharedNativeCompilation(target, name)
+        KotlinSharedNativeCompilation(target, konanTarget, name)
 }