Fix syncing languageSettings for KotlinNativeLink task

Task registration may happen within another configuration call leading
to prohibited 'afterEvaluate {}' block error. Fixed it by moving out
sync to separate configuration call.

^KT-54113 Fixed

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/KotlinNativeLinkIT.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.native
+
+import org.gradle.util.GradleVersion
+import org.jetbrains.kotlin.gradle.testbase.*
+import org.junit.jupiter.api.DisplayName
+
+@DisplayName("KotlinNativeLink task tests")
+@NativeGradlePluginTests
+internal class KotlinNativeLinkIT : KGPBaseTest() {
+
+    @DisplayName("KT-54113: afterEvaluate to sync languageSettings should run out of configuration methods scope")
+    @GradleTest
+    fun shouldSyncLanguageSettingsSafely(gradleVersion: GradleVersion) {
+        nativeProject("native-link-simple", gradleVersion) {
+            build("tasks")
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-link-simple/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+    id 'org.jetbrains.kotlin.multiplatform'
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+kotlin {
+    <SingleNativeTarget>("host")
+
+    targets.named("host").configure {
+        binaries.test("integrationTests")
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-link-simple/src/hostMain/kotlin/main.kt

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+fun main() {
+    println("Hello, Kotlin/Native!")
+}

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/native/KotlinNativeTargetConfigurator.kt

@@ -73,18 +73,6 @@ open class KotlinNativeTargetConfigurator<T : KotlinNativeTarget> : AbstractKotl
             )
         }
 
-        runOnceAfterEvaluated("Sync language settings for NativeLinkTask") {
-            result.configure {
-                // We propagate compilation free args to the link task for now (see KT-33717).
-                val defaultLanguageSettings = binary.compilation.languageSettings as? DefaultLanguageSettingsBuilder
-                if (defaultLanguageSettings != null) {
-                    it.toolOptions.freeCompilerArgs.addAll(
-                        defaultLanguageSettings.freeCompilerArgs
-                    )
-                }
-            }
-        }
-
 
         if (binary !is TestExecutable) {
             tasks.named(binary.compilation.target.artifactsTaskName).dependsOn(result)
@@ -96,6 +84,18 @@ open class KotlinNativeTargetConfigurator<T : KotlinNativeTarget> : AbstractKotl
         }
     }
 
+    private fun Project.syncLanguageSettingsToLinkTask(binary: NativeBinary) {
+        tasks.named(binary.linkTaskName, KotlinNativeLink::class.java).configure {
+            // We propagate compilation free args to the link task for now (see KT-33717).
+            val defaultLanguageSettings = binary.compilation.languageSettings as? DefaultLanguageSettingsBuilder
+            if (defaultLanguageSettings != null) {
+                it.toolOptions.freeCompilerArgs.addAll(
+                    defaultLanguageSettings.freeCompilerArgs
+                )
+            }
+        }
+    }
+
     private fun Project.createFrameworkArtifact(
         binary: Framework,
         linkTask: TaskProvider<KotlinNativeLink>
@@ -317,6 +317,11 @@ open class KotlinNativeTargetConfigurator<T : KotlinNativeTarget> : AbstractKotl
         target.binaries.all {
             project.createLinkTask(it)
         }
+        project.runOnceAfterEvaluated("Sync language settings for NativeLinkTask") {
+            target.binaries.all { binary ->
+                project.syncLanguageSettingsToLinkTask(binary)
+            }
+        }
 
         target.binaries.withType(Executable::class.java).all {
             project.createRunTask(it)