org.eclipse.jdt.debug.ui/scripts/buildExtraJAR.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="Build Snippet support JAR" default="build" basedir="..">

	<property name="bootclasspath" value=""/>

	<target name="build" description="Cleans, builds and refreshes the impacted resources" depends="clean, snippetsupport.jar"/>

	<target name="init" depends="properties">
		<property name="temp.folder" value="${basedir}/temp.folder"/>
		<property name="build.result.folder" value="${basedir}"/>
	</target>

	<target name="properties" if="eclipse.running">
		<property name="build.compiler" value="org.eclipse.jdt.core.JDTCompilerAdapter"/>
	</target>

	<target name="snippetsupport.jar" depends="init" description="Creates the snippetsupport.jar">
		<property name="destdir" value="${temp.folder}/snippetsupport.jar.bin"/>
		<delete dir="${destdir}"/>
		<mkdir dir="${destdir}"/>
		<!-- compile the source code -->
		<javac target="1.3" source="1.3" destdir="${destdir}"
			failonerror="true"
			verbose="false"
			debug="on"
			includeAntRuntime="no"
			bootclasspath="${bootclasspath}" 
			classpath="${basedir}/bin">
			<src path="Snippet Support/"/>
		</javac>
		<mkdir dir="${build.result.folder}"/>
		<jar destfile="${build.result.folder}/snippetsupport.jar" basedir="${destdir}"/>
		<delete dir="${temp.folder}"/>
	</target>

	<target name="clean" depends="init">
		<delete file="${build.result.folder}/snippetsupport.jar"/>
		<delete dir="${temp.folder}"/>
	</target>
</project>