Add Gradle Plugin Portal publication to the buildscripts

Add option to disable signing (-PnoSign), to be used when publishing
pre-built artifacts

Add option to define specific version for publishing, to be used when
publishing test versions

(cherry picked from commit dcd55e9)

libraries/commonConfiguration.gradle

@@ -83,16 +83,18 @@ task preparePublication {
 ext.configurePublishing = { Project project ->
     project.configure(project) {
         apply plugin: 'maven'
-        apply plugin: 'signing'
 
+        if (!project.hasProperty('prebuiltJar')) {
+            apply plugin: 'signing'
 
-        signing {
+            signing {
-            required { (project.properties["signingRequired"] ?: project.isSonatypeRelease) }
+                required { (project.properties["signingRequired"] ?: project.isSonatypeRelease) }
-            sign configurations.archives
+                sign configurations.archives
-        }
+            }
 
-        signArchives {
+            signArchives {
-            enabled signing.required
+                enabled signing.required
+            }
         }
 
         task dist(type: Copy, dependsOn: assemble) {

libraries/tools/gradle-tools/build.gradle

@@ -4,9 +4,11 @@ buildscript {
 
     repositories {
         mavenCentral()
+        maven { url 'https://plugins.gradle.org/m2/' }
     }
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlin_gradle_plugin_version}"
+        classpath "com.gradle.publish:plugin-publish-plugin:0.9.7"
     }
 }
 
@@ -46,3 +48,39 @@ task clean {
         delete "${buildDir}/repo"
     }
 }
+
+configure([project(':kotlin-gradle-plugin'), project(':kotlin-allopen'), project(':kotlin-noarg')]) { project ->
+    apply plugin: 'com.gradle.plugin-publish'
+
+    if (project.hasProperty('publishPluginsVersion')) {
+        configurations.archives.artifacts.all {
+            version = project.getProperty('publishPluginsVersion')
+        }
+    }
+
+    if (project.hasProperty("${project.name}-jar")) {
+        println("Using pre-built artifact for ${project.name}")
+        configurations.archives.artifacts.clear()
+
+        artifacts {
+            archives(file(project.getProperty("${project.name}-jar"))) {
+                name project.name
+            }
+        }
+    }
+
+    publishPlugins.doFirst {
+        assert !kotlin_version.contains('SNAPSHOT')
+    }
+
+    pluginBundle {
+        website = 'https://kotlinlang.org/'
+        vcsUrl = 'https://github.com/JetBrains/kotlin/'
+        description = 'Kotlin plugins for Gradle'
+        tags = ['kotlin']
+
+        mavenCoordinates {
+            groupId = "org.jetbrains.kotlin"
+        }
+    }
+}

libraries/tools/kotlin-allopen/build.gradle

@@ -34,3 +34,16 @@ compileKotlin.dependsOn preprocessSources
 jar {
     from(targetSrc) { include("META-INF/**") }
 }
+
+pluginBundle {
+    plugins {
+        kotlinAllopenPlugin {
+            id = 'org.jetbrains.kotlin.plugin.allopen'
+            description = displayName = 'Kotlin All Open compiler plugin'
+        }
+        kotlinSpringPlugin {
+            id = 'org.jetbrains.kotlin.plugin.spring'
+            description = displayName = 'Kotlin Spring compiler plugin'
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin/build.gradle

@@ -90,3 +90,24 @@ dokka {
     outputFormat = 'markdown'
     includes = ["${projectDir}/Module.md"]
 }
+
+pluginBundle {
+    plugins {
+        kotlinJvmPlugin {
+            id = 'org.jetbrains.kotlin.jvm'
+            description = displayName = 'Kotlin JVM plugin'
+        }
+        kotlinAndroidPlugin {
+            id = 'org.jetbrains.kotlin.android'
+            description = displayName = 'Kotlin Android plugin'
+        }
+        kotlinAndroidExtensionsPlugin {
+            id = 'org.jetbrains.kotlin.android.extensions'
+            description = displayName = 'Kotlin Android Extensions plugin'
+        }
+        kotlinKaptPlugin {
+            id = 'org.jetbrains.kotlin.kapt'
+            description = displayName = 'Kotlin Kapt plugin'
+        }
+    }
+}

libraries/tools/kotlin-noarg/build.gradle

@@ -40,3 +40,16 @@ compileKotlin.dependsOn preprocessSources
 jar {
     from(targetSrc) { include("META-INF/**") }
 }
+
+pluginBundle {
+    plugins {
+        kotlinNoargPlugin {
+            id = 'org.jetbrains.kotlin.plugin.noarg'
+            description = displayName = 'Kotlin No Arg compiler plugin'
+        }
+        kotlinJpaPlugin {
+            id = 'org.jetbrains.kotlin.plugin.jpa'
+            description = displayName = 'Kotlin JPA compiler plugin'
+        }
+    }
+}