Support composite build against detached shared

build.gradle

@@ -23,10 +23,6 @@ import org.jetbrains.kotlin.konan.*
 buildscript {
     apply from: "gradle/kotlinGradlePlugin.gradle"
     apply from: "gradle/kotlinNativeShared.gradle"
-    
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-native-version:$konanVersion"
-    }
 }
 
 // Allows generating wrappers for the root build and all the samples during execution of the default 'wrapper' task.

buildSrc/plugins/build.gradle

@@ -38,8 +38,23 @@ dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib:$buildKotlinVersion"
     compile "org.jetbrains.kotlin:kotlin-reflect:$buildKotlinVersion"
     compile group: 'com.ullink.slack', name: 'simpleslackapi', version: '0.6.0'
-    compile "org.jetbrains.kotlin:kotlin-native-shared:$sharedVersion"
     compile "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.10.0"
+
+    // Support composite build against kotlin-native-shared.
+    // Gradle cannot substitute a dependency in buildSrc by an included build.
+    // See: https://github.com/gradle/gradle/issues/3768.
+    // Thus we have to compile sources of the included shared once more
+    // and depend on them during buildSrc compilation.
+    // We don't add this dependency in the runtime scope because build scripts
+    // already depend on kotlin-native-shared and this dependency is correctly
+    // substituted by the included build.
+    if (hasProperty("sharedProjectPath")) {
+        compileOnly project(':shared')
+    } else {
+        // If there is no composite build against shared, add a dependency on a published jar.
+        compile "org.jetbrains.kotlin:kotlin-native-shared:$sharedVersion"
+    }
+    
 }
 
 rootProject.dependencies {

buildSrc/settings.gradle

@@ -15,3 +15,7 @@
  */
 
 include 'plugins'
+
+if (hasProperty("sharedProjectPath")) {
+    include 'shared'
+}

buildSrc/shared/build.gradle.kts

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    kotlin("jvm")
+}
+
+val sharedProject = file(property("sharedProjectPath")!!).resolve("src")
+
+kotlin.sourceSets["main"].kotlin.srcDirs.add(sharedProject)
+
+dependencies {
+    implementation(kotlin("stdlib"))
+}

settings.gradle

@@ -49,3 +49,7 @@ if (hasProperty("kotlinProjectPath")) {
         }
     }
 }
+
+if (hasProperty("sharedProjectPath")) {
+    includeBuild(sharedProjectPath)
+}