build.xml

<project name="java-config" default="dist">
	<target name="compile">
		<mkdir dir="build/classes"/>
		<javac srcdir="src" destdir="build/classes" includeantruntime="false"/>
		<copy todir="build/classes">
			<fileset dir="src">
				<include name="*.txt"/>
			</fileset>
		</copy>
		
		<exec executable = "git" output="build/classes/build.txt" failifexecutionfails="false" failonerror="false">
			<arg value = "rev-parse" />
			<arg value = "HEAD" />
		</exec>
	</target>
	
	<target name="jar" depends="compile">
		<jar jarfile="build/java-config.jar" basedir="build/classes">
			<manifest>
				<attribute name="Main-Class" value="JavaConfig"/>
			</manifest>
		</jar>
	</target>
	
	<target name="clean">
		<delete dir="build"/>
	</target>
	
	<target name="dist" depends="clean,jar">
		<copy todir="." file="build/java-config.jar"/>
	</target>
</project>