一个Android项目，Ubuntu中配置hudson，其中的ant的build.xml不会写，求教

在SVN上这个项目的目录如下所示，其中网络地址是192.168.xx.xx
http://网络地址/home/svn/myproject/MyWorld/    
..
    .classpath
    .project
    .settings/
    AndroidManifest.xml
    assets/
    bin/
    default.properties
    gen/
    proguard.cfg
    res/
    src/
使用Ubuntu作为服务器，安装了ant，现在缺少一个build.xml来编译我的项目，求指教，我的build.xml应当怎么写？
在网上搜了一个比较全的，但是我看不懂，我的服务器上没有安装Android SDK，项目中所引用的包貌似也没有到什么lib的目录下面，还有我的网址是数字的，他的是http://autoandroid.googlecode.com/svn/trunk/samples/notepad/，然后xmls就写成下面这样，我现在很疑惑，怎样将SVN上的项目在我的服务器上持续集成，就差这个build.xml文件，到底该怎么写？
  <?xml version="1.0" encoding="utf-8"?>
<project name="notepad" default="precommit" xmlns:android="antlib:com.googlecode.autoandroid.ant">        <!-- Requires ant 1.7 or better -->        <taskdef uri="antlib:com.googlecode.autoandroid.ant" classpath="lib/android-ant.jar"/>
        <android:home/> <!-- Set the detected android-home property to the sdk root. -->        <!-- Dependencies -->        <fileset dir="lib" id="main.jars">
                <include name="positron.jar"/>
        </fileset>
        
        <fileset dir="lib" id="test.jars">
                <include name="positron.jar"/>
                <include name="junit.jar"/>
        </fileset>        <!-- Rules -->        <target name="clean" description="Delete the output directories.">
                <delete dir="target"/>
        </target>        <target name="resource-src" description="Generate the R.java file for this project's resources.">
                <android:aapt>
                        <arg value="package"/>
                        <arg value="-m"/>
                        <arg value="-J"/>
                        <arg file="src"/> <!-- Create R.java in the source directory -->
                        <arg value="-M"/>
                        <arg file="AndroidManifest.xml"/>
                        <arg value="-S"/>
                        <arg file="res"/>
                        <arg value="-I"/>
                        <arg file="${android-home}/android.jar"/>
                </android:aapt>
        </target>        <target name="compile-main" depends="resource-src" description="Compile the java source.">
                <mkdir dir="target/main-classes"/>
                <javac encoding="ascii" target="1.5" debug="true" extdirs=""
                                srcdir="src" destdir="target/main-classes"
                                bootclasspath="${android-home}/android.jar">
                        <classpath>
                                <fileset refid="main.jars"/>
                        </classpath>
                </javac>
        </target>        <target name="dex" depends="compile-main" description="Convert the .class files into .dex files.">
                <property name="classes.dex" location="target/classes.dex"/>
                <android:dx inputref="main.jars">
                        <arg value="--dex"/>
                        <arg value="--output=${classes.dex}"/>
                        <arg path="target/main-classes"/>
                </android:dx>
        </target>        <target name="package-res" description="Put the project's resources into the output package file.">
                <android:aapt>
                        <arg value="package"/>
                        <arg value="-f"/>
                        <arg value="-M"/>
                        <arg file="AndroidManifest.xml"/>
                        <arg value="-S"/>
                        <arg file="res"/>
                        <!-- No assets directory -->
                        <arg value="-I"/>
                        <arg file="${android-home}/android.jar"/>
                        <arg value="-F"/>
                        <arg file="target/notepad.ap_"/>
                </android:aapt>
        </target>        <target name="package-apk" depends="dex, package-res" description="Package the application and sign it with a debug key.">
                <android:apk-builder>
                        <arg file="target/notepad.apk"/>
                        <arg value="-z"/>
                        <arg file="target/notepad.ap_"/>
                        <arg value="-f"/>
                        <arg file="target/classes.dex"/>
                        <arg value="-rf"/>
                        <arg file="src"/>
                        <arg value="-rj"/>
                        <arg file="lib"/>
                </android:apk-builder>
        </target>        <target name="start-emulator" description="Start an emulator.">
                <android:adb><arg value="start-server"/></android:adb>
                <android:start-emulator only-if-not-running="true">
                        <arg line="-skin 320x480 -no-boot-anim"/>
                </android:start-emulator>
        </target>        <target name="stop-emulator" description="Stop the emulator we started.">
                <android:stop-emulator/>
        </target>        <target name="install" depends="package-apk, start-emulator" description="Install the package on the default emulator.">
                <android:adb>
                        <arg value="install"/>
                        <arg value="-r"/>
                        <arg file="target/notepad.apk"/>
                </android:adb>
        </target>        <target name="demo" depends="install" description="Run the application until Return is hit.">
                <input>Have fun with the demo, press Return when you're done.</input>
        </target>        <target name="compile-stories" depends="compile-main" description="Compile the stories.">
                <mkdir dir="target/story-classes"/>
                <javac target="1.5" debug="true" srcdir="stories" destdir="target/story-classes">
                        <classpath>
                                <pathelement location="target/main-classes"/>
                                <fileset refid="test.jars"/>
                                <pathelement location="${android-home}/android.jar"/>
                        </classpath>
                </javac>
        </target>        <target name="run-stories" depends="compile-stories" description="Run the stories on an existing emulator">
                <mkdir dir="target/junit-reports"/>
                <junit haltonfailure="true" fork="true" forkMode="once" printsummary="true">
                        <sysproperty key="positron.instrumentedPackage" value="com.example.android.notepad"/>
                        <sysproperty key="positron.apk" file="target/notepad.apk"/>
                        
                        <formatter type="plain"/>
                        <batchtest todir="target/junit-reports">
                                <fileset dir="target/story-classes"/>
                        </batchtest>
                        <classpath>
                                <pathelement location="target/main-classes"/>
                                <pathelement location="target/story-classes"/>
                                <fileset refid="test.jars"/>
                        </classpath>
                </junit>
        </target>        <target name="precommit" depends="clean, install, run-stories, stop-emulator" description="If this passes you are safe to commit."/></project>