build.xml

<project name="android-support-v4-googlemaps" default="jar">
	<property name="src.dir" value="." />
	<property name="build.dir" value="build" />
	<property name="jar-v4.file" value="${build.dir}/jar/android-support-v4-r6-googlemaps.jar" />
	<property name="jar-v13.file" value="${build.dir}/jar/android-support-v13-r6-googlemaps.jar" />

	<path id="classpath">
		<fileset dir="lib">
			<include name="**/*.jar"/>
		</fileset>
	</path>

	<target name="clean">
		<delete dir="${build.dir}"/>
	</target>

	<target name="compile">
		<mkdir dir="${build.dir}/classes-v4"/>
		<javac destdir="${build.dir}/classes-v4" includeantruntime="false">
			<src path="${src.dir}/v4" />
			<include name="java/**/*.java"/>
			<include name="eclair/**/*.java"/>
			<include name="froyo/**/*.java"/>
			<include name="gingerbread/**/*.java"/>
			<include name="honeycomb/**/*.java"/>
			<include name="honeycomb_mr2/**/*.java"/>
			<include name="ics/**/*.java"/>
			<classpath refid="classpath"/>
		</javac>

		<mkdir dir="${build.dir}/classes-v13"/>
		<javac destdir="${build.dir}/classes-v13" includeantruntime="false">
			<src path="${src.dir}/v4" />
			<src path="${src.dir}/v13" />
			<include name="java/**/*.java"/>
			<include name="eclair/**/*.java"/>
			<include name="froyo/**/*.java"/>
			<include name="gingerbread/**/*.java"/>
			<include name="honeycomb/**/*.java"/>
			<include name="honeycomb_mr2/**/*.java"/>
			<include name="ics/**/*.java"/>
			<include name="ics-mr1/**/*.java"/>
			<classpath refid="classpath"/>
		</javac>
	</target>

	<target name="jar" depends="clean, compile">
		<mkdir dir="${build.dir}/jar"/>
		<jar destfile="${jar-v4.file}" basedir="${build.dir}/classes-v4" />
		<jar destfile="${jar-v13.file}" basedir="${build.dir}/classes-v13" />
	</target>
</project>