Add wrapper instructions for source dist

Author: jdaugherty

README.md

@@ -110,7 +110,11 @@ For further information, please consult the [documentation](https://docs.grails.
 
 ## Building Grails
 
-For building Grails, please consult the [CONTRIBUTING.md](CONTRIBUTING.md) file.
+For detailed building Grails, please consult the [CONTRIBUTING.md](CONTRIBUTING.md) file. To bootstrap the project from a source distribution, you can execute: 
+
+     gradle wrapper
+
+Then you can proceed with running any valid gradle command from [CONTRIBUTING.md](CONTRIBUTING.md).
 
 ## Licensing
 

build.gradle

@@ -91,6 +91,7 @@ subprojects {
 }
 
 apply {
+    from layout.projectDirectory.file('gradle/gradle-wrapper-root-config.gradle')
     from layout.projectDirectory.file('gradle/publish-root-config.gradle')
     from layout.projectDirectory.file('gradle/rat-root-config.gradle')
 }

gradle/gradle-wrapper-root-config.gradle

@@ -0,0 +1,25 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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
+ *
+ *    https://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.
+ */
+def props = new Properties()
+project.rootProject.layout.projectDirectory.file('.sdkmanrc').asFile.withInputStream {
+    props.load(it)
+}
+tasks.withType(Wrapper).configureEach {
+    gradleVersion = props.gradle
+}

gradle/rat-root-config.gradle

@@ -23,6 +23,7 @@ tasks.named('rat') {
             'CODE_OF_CONDUCT.md',
             'LICENSE',
             'NOTICE',
+            'gradle/wrapper/gradle-wrapper.properties', // gradle wrapper excluded from src zip
             '**/build/**', // Gradle generated build directories
             '**/.gradle/**', '**/wrapper/**', 'gradlew*',  // gradle wrapper files excluded from src zip
             '**/*.html', // html files are only in test

gradle/wrapper/gradle-wrapper.properties

@@ -1,18 +1,3 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You 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.
-
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip