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build/apache-ant-1.10.4/manual/clonevm.html

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+<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<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>