[Gradle, native] Disable platform libraries generation by default

Since there are a lot of changes around klibs in 1.4-M2, it was
decided to postpone enabling user-side platform libraries generation
by default. This patch switches the default distribution type to
prebuilt.

It also slightly refactors the code allowing user to choose the
distribution type. Now, there are only two distribution types
available:

- prebuilt - the default type, contains prebuilt platform libs.
             A distribution archive has the "-prebuilt-" classifier.
- light    - doesn't contain platform libs in an archive and
             generates them at the user side. The archive has no
             classifier to avoid changes in the K/N build logic and
             TC configurations.

The same types are also available for 1.3 but with sightly different
convention:

- prebuilt - the default type, contains prebuilt platform libs.
             A distribution archive has no classifier.
- light    - aka "restricted" distribution, doesn't contain
             platform libs for Apple platforms. The archive has
             the "-restricted-" suffix. Doesn't have a facility
             to build the libraries at the user side.

Issue #KT-38174 Fixed

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

@@ -40,14 +40,31 @@ class NativePlatformLibsIT : BaseGradleIT() {
         }
     }
 
+    private fun BaseGradleIT.Project.buildWithLightDist(vararg tasks: String, check: CompiledProject.() -> Unit) =
+        build(*tasks, "-Pkotlin.native.distribution.type=light", check = check)
+
     @Test
     fun testNoGenerationForOldCompiler() = with(platformLibrariesProject("linuxX64")) {
         deleteInstalledCompilers()
 
         // Check that we don't run the library generator for old compiler distributions where libraries are prebuilt.
         // Don't run the build to reduce execution time.
-        build("tasks", "-Pkotlin.native.version=1.3.60") {
+        build("tasks", "-Pkotlin.native.version=$oldCompilerVersion") {
             assertSuccessful()
+            assertContains("Unpack Kotlin/Native compiler to ")
+            assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-(macos|linux|windows)".toRegex())
+            assertNotContains("Generate platform libraries for ")
+        }
+    }
+
+    @Test
+    fun testNoGenerationByDefault() = with(platformLibrariesProject("linuxX64")) {
+        deleteInstalledCompilers()
+
+        // Check that a prebuilt distribution is used by default.
+        build("assemble") {
+            assertSuccessful()
+            assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-prebuilt-(macos|linux|windows)".toRegex())
             assertNotContains("Generate platform libraries for ")
         }
     }
@@ -66,14 +83,15 @@ class NativePlatformLibsIT : BaseGradleIT() {
 
         with(rootProject) {
             // Check that platform libraries are correctly generated for both root project and a subproject.
-            build("assemble") {
+            buildWithLightDist("assemble") {
                 assertSuccessful()
+                assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-(macos|linux|windows)".toRegex())
                 assertContains("Generate platform libraries for linux_x64")
                 assertContains("Generate platform libraries for linux_arm64")
             }
 
             // Check that we don't generate libraries during a second run. Don't clean to reduce execution time.
-            build("assemble") {
+            buildWithLightDist("assemble") {
                 assertSuccessful()
                 assertNotContains("Generate platform libraries for ")
             }
@@ -89,7 +107,7 @@ class NativePlatformLibsIT : BaseGradleIT() {
             else -> KonanTarget.IOS_X64
         }
 
-        platformLibrariesProject(unsupportedTarget.presetName).build("assemble") {
+        platformLibrariesProject(unsupportedTarget.presetName).buildWithLightDist("assemble") {
             assertSuccessful()
             assertNotContains("Generate platform libraries for ")
         }
@@ -104,13 +122,13 @@ class NativePlatformLibsIT : BaseGradleIT() {
 
         with(platformLibrariesProject("iosX64")) {
             // Build Mac libraries without caches.
-            build("tasks") {
+            buildWithLightDist("tasks") {
                 assertSuccessful()
                 assertContains("Generate platform libraries for ios_x64")
             }
 
             // Change cache kind and check that platform libraries generator was executed.
-            build("tasks", "-Pkotlin.native.cacheKind=static") {
+            buildWithLightDist("tasks", "-Pkotlin.native.cacheKind=static") {
                 assertSuccessful()
                 assertContains("Precompile platform libraries for ios_x64 (precompilation: static)")
             }
@@ -128,12 +146,53 @@ class NativePlatformLibsIT : BaseGradleIT() {
         }
     }
 
+    @Test
+    fun testDeprecatedRestrictedDistributionProperty() = with(platformLibrariesProject("linuxX64")) {
+        build("tasks", "-Pkotlin.native.restrictedDistribution=true", "-Pkotlin.native.version=$oldCompilerVersion") {
+            assertSuccessful()
+            assertContains("Warning: Project property 'kotlin.native.restrictedDistribution' is deprecated. Please use 'kotlin.native.distribution.type=light' instead")
+
+            // Restricted distribution is available for Mac hosts only.
+            if (HostManager.hostIsMac) {
+                assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-restricted-(macos|linux|windows)".toRegex())
+            } else {
+                assertNotContains("Kotlin/Native distribution: .*kotlin-native-restricted-(macos|linux|windows)".toRegex())
+            }
+        }
+
+        // We allow using this deprecated property for 1.4 too. Just download the distribution without platform libs in this case.
+        build("tasks", "-Pkotlin.native.restrictedDistribution=true") {
+            assertSuccessful()
+            assertContains("Warning: Project property 'kotlin.native.restrictedDistribution' is deprecated. Please use 'kotlin.native.distribution.type=light' instead")
+            assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-(macos|linux|windows)".toRegex())
+        }
+    }
+
+    @Test
+    fun testSettingDistributionTypeForOldCompiler() = with(platformLibrariesProject("linuxX64")) {
+        build("tasks", "-Pkotlin.native.distribution.type=prebuilt", "-Pkotlin.native.version=$oldCompilerVersion") {
+            assertSuccessful()
+            assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-(macos|linux|windows)".toRegex())
+        }
+
+        build("tasks", "-Pkotlin.native.distribution.type=light", "-Pkotlin.native.version=$oldCompilerVersion") {
+            assertSuccessful()
+
+            // Restricted distribution is available for Mac hosts only.
+            if (HostManager.hostIsMac) {
+                assertContainsRegex("Kotlin/Native distribution: .*kotlin-native-restricted-(macos|linux|windows)".toRegex())
+            } else {
+                assertNotContains("Kotlin/Native distribution: .*kotlin-native-restricted-(macos|linux|windows)".toRegex())
+            }
+        }
+    }
+
     @Test
     fun testSettingGenerationMode() = with(platformLibrariesProject("linuxX64")) {
         deleteInstalledCompilers()
 
         // Check that user can change generation mode used by the cinterop tool.
-        build("tasks", "-Pkotlin.native.platform.libraries.mode=metadata") {
+        buildWithLightDist("tasks", "-Pkotlin.native.platform.libraries.mode=metadata") {
             assertSuccessful()
             assertContainsRegex("Run tool: \"generatePlatformLibraries\" with args: .* -mode metadata".toRegex())
         }
@@ -144,13 +203,13 @@ class NativePlatformLibsIT : BaseGradleIT() {
         deleteInstalledCompilers()
 
         // Install the compiler at the first time. Don't build to reduce execution time.
-        build("tasks") {
+        buildWithLightDist("tasks") {
             assertSuccessful()
             assertContains("Generate platform libraries for linux_x64")
         }
 
         // Reinstall the compiler.
-        build("tasks", "-Pkotlin.native.reinstall=true") {
+        buildWithLightDist("tasks", "-Pkotlin.native.reinstall=true") {
             assertSuccessful()
             assertContains("Unpack Kotlin/Native compiler to ")
             assertContains("Generate platform libraries for linux_x64")

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinProjectExtension.kt

@@ -15,14 +15,11 @@ import org.jetbrains.kotlin.gradle.plugin.KotlinJsCompilerType.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinAndroidTarget
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJsSingleTargetPreset
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinWithJavaTarget
-import org.jetbrains.kotlin.gradle.plugin.mpp.isAtLeast
 import org.jetbrains.kotlin.gradle.targets.js.calculateJsCompilerType
 import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsTargetDsl
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrSingleTargetPreset
 import org.jetbrains.kotlin.gradle.utils.lowerCamelCaseName
-import org.jetbrains.kotlin.konan.CompilerVersion
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
-import org.jetbrains.kotlin.konan.target.KonanTarget
 import kotlin.reflect.KClass
 
 private const val KOTLIN_PROJECT_EXTENSION_NAME = "kotlin"
@@ -239,24 +236,3 @@ enum class ExplicitApiMode(private val cliOption: String) {
 
     fun toCompilerArg() = "-Xexplicit-api=$cliOption"
 }
-
-enum class NativeDistributionType(val suffix: String?) {
-    LIGHT(null) {
-        override fun isAvailableFor(host: KonanTarget, version: CompilerVersion) = true
-    },
-    RESTRICTED("restricted") {
-        override fun isAvailableFor(host: KonanTarget, version: CompilerVersion): Boolean =
-            host == KonanTarget.MACOS_X64 && version.major == 1 && version.minor == 3
-    },
-    PREBUILT("prebuilt") {
-        override fun isAvailableFor(host: KonanTarget, version: CompilerVersion): Boolean =
-            version.isAtLeast(1, 4, 0)
-    };
-
-    abstract fun isAvailableFor(host: KonanTarget, version: CompilerVersion): Boolean
-
-    companion object {
-        fun byCompilerArgument(argument: String): NativeDistributionType? =
-            values().firstOrNull { it.name.equals(argument, ignoreCase = true) }
-    }
-}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinProperties.kt

@@ -19,7 +19,6 @@ package org.jetbrains.kotlin.gradle.plugin
 import org.gradle.api.Project
 import org.jetbrains.kotlin.gradle.dsl.Coroutines
 import org.jetbrains.kotlin.gradle.dsl.NativeCacheKind
-import org.jetbrains.kotlin.gradle.dsl.NativeDistributionType
 import org.jetbrains.kotlin.gradle.plugin.KotlinJsCompilerType.Companion.jsCompilerProperty
 import org.jetbrains.kotlin.gradle.targets.native.DisabledNativeTargetsReporter
 import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile
@@ -126,27 +125,17 @@ internal class PropertiesProvider private constructor(private val project: Proje
 
     /**
      * Allow a user to choose distribution type. The following distribution types are available:
-     *  - regular - The default distribution. Includes all platform libraries in 1.3 and generates them at the user side in 1.4.
-     *  - restricted - Doesn't include Apple platform libraries. Available for MacOS only and in 1.3 only.
-     *  - prebuilt - Includes all platform libraries. Available in 1.4 only. Used to workaround possible problems with library generation at the use side.
+     *  - light - Doesn't include platform libraries and generates them at the user side. For 1.3 corresponds to the restricted distribution.
+     *  - prebuilt - Includes all platform libraries.
      */
-    val nativeDistributionType: NativeDistributionType?
-        get() {
-            var result = property("kotlin.native.distribution.type")?.let {
-                NativeDistributionType.byCompilerArgument(it)
-            }
+    val nativeDistributionType: String?
+        get() = property("kotlin.native.distribution.type")
 
-            val deprecatedRestricted = booleanProperty("kotlin.native.restrictedDistribution")
-            if (result == null && deprecatedRestricted != null) {
-                SingleWarningPerBuild.show(
-                    project,
-                    "Project property 'kotlin.native.restrictedDistribution' is deprecated. Please use 'kotlin.native.distribution.type=restricted' instead"
-                )
-                result = if (deprecatedRestricted) NativeDistributionType.RESTRICTED else NativeDistributionType.LIGHT
-            }
-
-            return result
-        }
+    /**
+     * A property that was used to choose a restricted distribution in 1.3.
+     */
+    val nativeDeprecatedRestricted: Boolean?
+        get() = booleanProperty("kotlin.native.restrictedDistribution")
 
     /**
      * Allows a user to force a particular cinterop mode for platform libraries generation. Available modes: sourcecode, metadata.

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

@@ -13,10 +13,10 @@ import org.gradle.api.Project
 import org.gradle.api.invocation.Gradle
 import org.jetbrains.kotlin.compilerRunner.konanHome
 import org.jetbrains.kotlin.compilerRunner.konanVersion
-import org.jetbrains.kotlin.gradle.dsl.NativeDistributionType.LIGHT
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
 import org.jetbrains.kotlin.gradle.targets.native.DisabledNativeTargetsReporter
+import org.jetbrains.kotlin.gradle.targets.native.internal.NativeDistributionTypeProvider
 import org.jetbrains.kotlin.gradle.targets.native.internal.PlatformLibrariesGenerator
 import org.jetbrains.kotlin.gradle.targets.native.internal.setUpKotlinNativePlatformDependencies
 import org.jetbrains.kotlin.gradle.utils.NativeCompilerDownloader
@@ -64,10 +64,8 @@ abstract class AbstractKotlinNativeTargetPreset<T : KotlinNativeTarget>(
             logger.info("User-provided Kotlin/Native distribution: $konanHome")
         }
 
-        val distributionType = PropertiesProvider(project).nativeDistributionType
-        if (konanVersion.isAtLeast(1, 4, 0) &&
-            (distributionType == null || distributionType == LIGHT)
-        ) {
+        val distributionType = NativeDistributionTypeProvider(project).getDistributionType(konanVersion)
+        if (distributionType.mustGeneratePlatformLibs) {
             PlatformLibrariesGenerator(project, konanTarget).generatePlatformLibsIfNeeded()
         }
     }

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

@@ -12,9 +12,9 @@ import org.gradle.api.file.FileTree
 import org.gradle.api.logging.Logger
 import org.jetbrains.kotlin.compilerRunner.KotlinNativeCompilerRunner
 import org.jetbrains.kotlin.compilerRunner.konanVersion
-import org.jetbrains.kotlin.gradle.dsl.NativeDistributionType
 import org.jetbrains.kotlin.gradle.logging.kotlinInfo
-import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
+import org.jetbrains.kotlin.gradle.targets.native.internal.NativeDistributionType
+import org.jetbrains.kotlin.gradle.targets.native.internal.NativeDistributionTypeProvider
 import org.jetbrains.kotlin.konan.CompilerVersion
 import org.jetbrains.kotlin.konan.MetaVersion
 import org.jetbrains.kotlin.konan.target.HostManager
@@ -41,9 +41,7 @@ class NativeCompilerDownloader(
         get() = project.logger
 
     private val distributionType: NativeDistributionType
-        get() = PropertiesProvider(project).nativeDistributionType?.takeIf {
-            it.isAvailableFor(HostManager.host, compilerVersion)
-        } ?: NativeDistributionType.LIGHT
+        get() = NativeDistributionTypeProvider(project).getDistributionType(compilerVersion)
 
     private val simpleOsName: String
         get() = HostManager.simpleOsName()

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

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2010-2020 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.targets.native.internal
+
+import org.gradle.api.Project
+import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
+import org.jetbrains.kotlin.gradle.plugin.mpp.isAtLeast
+import org.jetbrains.kotlin.gradle.targets.native.internal.NativeDistributionType.*
+import org.jetbrains.kotlin.gradle.utils.SingleWarningPerBuild
+import org.jetbrains.kotlin.konan.CompilerVersion
+import org.jetbrains.kotlin.konan.target.HostManager
+
+internal enum class NativeDistributionType(val suffix: String?, val mustGeneratePlatformLibs: Boolean) {
+    LIGHT(null, true),
+    PREBUILT("prebuilt", false),
+
+    // Distribution types for 1.3:
+    LIGHT_1_3("restricted", false), // aka "restricted" distribution without platform libs for Apple targets.
+    PREBUILT_1_3(null, false)
+}
+
+internal class NativeDistributionTypeProvider(private val project: Project) {
+    private val propertiesProvider = PropertiesProvider(project)
+
+    private fun warning(message: String) = SingleWarningPerBuild.show(project, "Warning: $message")
+
+    private fun chooseDistributionType(
+        prebuiltType: NativeDistributionType,
+        lightType: NativeDistributionType,
+        defaultType: NativeDistributionType
+    ): NativeDistributionType {
+        val requestedByUser = propertiesProvider.nativeDistributionType?.toLowerCase()
+        val deprecatedRestricted = propertiesProvider.nativeDeprecatedRestricted
+
+        // A case when a deprecated property (kotlin.native.restrictedDistribution) is used to choose the restricted distribution.
+        // Effectively the restricted distribution from 1.3 and the light distribution from 1.4 are the same,
+        // so we allow user to specify kotlin.native.restrictedDistribution in both 1.3 and 1.4
+        if (requestedByUser == null && deprecatedRestricted != null) {
+            return if (deprecatedRestricted) {
+                lightType
+            } else {
+                defaultType
+            }
+        }
+
+        // A normal path: no deprecated properties, only kotlin.native.distribution.type.
+        return when (requestedByUser) {
+            null -> defaultType
+            "prebuilt" -> prebuiltType
+            "light" -> lightType
+            else -> {
+                warning("Unknown Kotlin/Native distribution type: $requestedByUser. Available values: prebuilt, light")
+                defaultType
+            }
+        }
+    }
+
+    fun getDistributionType(version: CompilerVersion): NativeDistributionType {
+        if (propertiesProvider.nativeDeprecatedRestricted != null) {
+            warning("Project property 'kotlin.native.restrictedDistribution' is deprecated. Please use 'kotlin.native.distribution.type=light' instead")
+        }
+
+        return if (version.isAtLeast(1, 4, 0)) {
+            chooseDistributionType(prebuiltType = PREBUILT, lightType = LIGHT, defaultType = PREBUILT)
+        } else {
+            // In 1.3, the distribution type can be chosen for Mac hosts only.
+            if (!HostManager.hostIsMac) {
+                return PREBUILT_1_3
+            }
+            chooseDistributionType(prebuiltType = PREBUILT_1_3, lightType = LIGHT_1_3, defaultType = PREBUILT_1_3)
+        }
+    }
+}