Hi, You can use below ant script to build .pkg files <project default="rules" name="RuleProject"> <!-- Uncomment this for Maven Runner --> <property name="eclipsepath" value="."/> <!-- Uncomment this for Eclipse Runner --> <!-- <property name="eclipsepath" value="../../../"/> --> <path id="cheese.classpath"> <pathelement location="${eclipsepath}/build/Beans.jar"/> </path> <target name="beans" > <tstamp/> <echo message="CREATING Beans JAR..."/> <jar jarfile="./build/Beans.jar"> <fileset dir="./bin"/> </jar> </target> <path> <pathelement></pathelement> </path> <path id="drools.classpath"> <fileset dir="${eclipsepath}/build/lib/"> <include name="*.jar"/> </fileset> <pathelement location="target"/> </path> <taskdef name="compiler" classname="org.drools.contrib.DroolsCompilerAntTask" classpathref="drools.classpath" /> <target name="rules" > <compiler srcdir="${eclipsepath}/src/main/rules" tofile="${eclipsepath}/target/cheese.pkg" classpathref="cheese.classpath" binformat="package" > <include name="*.drl" /> <!-- <include name="*.brl" /> <include name="*.xml" /> <include name="*.dslr" /> --> </compiler> </target> </project> reference http://www.nabble.com/Ant-compiler-task--td15906277.html#a15907448 Regards, Ravi T