== build.xml
<project name="helloworld" default="build" basedir="checkout">
<taskdef name="svn" classname="org.tigris.subversion.svnant.SvnTask"/>
<target name="build">
<delete dir="trunk"/>
<mkdir dir="trunk"/>
<svn username="id" password="password">
<checkout url="http://svn/svn/BDS/HelloWorld/trunk" destPath="."/>
</svn>
</target>
</project>
==
http://blog.taragana.com/index.php/archive/how-to-integrate-subversion-version-control-software-with-apache-ant/
SVNANT 라이브러리 받은후 $ANTHOME/lib에 jar파일 복사후 taskdef를 <taskdef name="svn" classname="org.tigris.subversion.svnant.SvnTask"/> 와 같이 지정하면됨.