<!DOCTYPE html> <!-- 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. --> <html lang="en"> <head> <link rel="stylesheet" type="text/css" href="stylesheets/style.css"> <title>ant.build.clonevm</title> </head> <body> <h2 id="clonevm">ant.build.clonevm</h2> <p><em>Since Apache Ant 1.7</em></p> <p>The value of the <code>ant.build.clonevm</code> system property controls how Ant instruments forked JVMs. The <a href="Tasks/java.html">java</a> and <a href="Tasks/junit.html">junit</a> tasks support <var>clonevm</var> attributes to control JVMs on a task-by-task basis while the system property applies to all forked JVMs.</p> <p>If the value of the property is <q>true</q>, then all system properties of the forked JVM will be the same as those of the JVM running Ant. In addition, if you set <code>ant.build.clonevm</code> to <q>true</q> and <a href="sysclasspath.html">build.sysclasspath</a> has not been set, the <var>bootclasspath</var> of forked JVMs gets constructed as if <code>build.sysclasspath</code> had the value <q>last</q>.</p> <p>Note that this has to be a system property, so it cannot be specified on the Ant command line. Use the <code>ANT_OPTS</code> environment variable instead.</p> </body> </html>