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Date: Thu, 03 Feb 2005 16:35:05 -0800
From: Douglas Kramer <Douglas.Kramer@Sun.COM>
Subject: Skip building jar file
To: user@ant.apache.org
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Novice question.

My ant script works great, skipping compile if source files have not changes,
and skipping copying of resources if they have not changed.

How would I prevent building the jar file if nothing has changed?

   <target name="jar" depends="compile"
       description="Builds the jar file that contains the class files">

       <delete file="${build.jardir}/${mifdoclet.jar}" />
       <mkdir  dir="${build.jardir}" />

       <jar jarfile="${build.jardir}/${mifdoclet.jar}" >
           <fileset dir="${build.classes}">
          </fileset>
       </jar>

   </target>

-Doug

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