config/ant-phase-verify.xml

<?xml version="1.0" encoding="UTF-8"?>

<project name="phase-package" default="execute">

  <condition property="checkstyle.ant.skip">
    <isset property="checkstyle.ant.skip" />
  </condition>

  <target name="execute" unless="checkstyle.ant.skip">
    <taskdef name="checkstyle"
             classname="com.puppycrawl.tools.checkstyle.ant.CheckstyleAntTask"
             classpath="${mvn.runtime_classpath}"
             />

    <property name="checkstyle.pattern.todo" value="NOTHingWillMatCH_-"/>
    <property name="check.config" location="config/checkstyle_checks.xml"/>

    <tstamp>
      <format property="STARTED" pattern="dd/MM/yyyy hh:mm:ss aa" />
    </tstamp>
    <echo>Checkstyle started: ${STARTED}</echo>

    <checkstyle config="${check.config}"
                failOnViolation="false"
                failureProperty="checkstyle.failure.property"
                >
      <fileset dir="src"
               includes="**/*"
               excludes="it/resources/**/*,test/resources/**/*,test/resources-noncompilable/**/*"/>
      <formatter type="plain"/>
      <formatter type="xml" toFile="${mvn.project.build.directory}/cs_errors.xml"/>
      <classpath path="${mvn.runtime_classpath}"/>
      <property key="checkstyle.cache.file" file="${mvn.project.build.directory}/cachefile"/>
      <property key="checkstyle.header.file" file="config/java.header"/>
      <property key="checkstyle.regexp.header.file" file="config/java_regexp.header"/>
      <property key="checkstyle.importcontrol.file" file="config/import-control.xml"/>
      <property key="checkstyle.suppressions.file"
                file="config/suppressions.xml"/>
    </checkstyle>

    <tstamp>
      <format property="FINISHED" pattern="dd/MM/yyyy hh:mm:ss aa" />
    </tstamp>
    <echo>Checkstyle finished: ${FINISHED}</echo>

    <fail if="checkstyle.failure.property"
          message="Checkstyle failed: ${checkstyle.failure.property}"
          />
  </target>
</project>