The generated Ant script currently contains absolute paths in some of the declared properties: <property name="defaulttargetdir" value="${maven.build.dir}"/> <property name="libdir" value="${maven.build.dir}/lib" /> <property name="classesdir" value="${maven.build.dest}" /> <property name="testclassesdir" value="${maven.test.dest}" /> I would like to see those properties made relative paths. I'll apply a patch the generate relative path properties.