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

<project name="incompatibilities" default="run" basedir=".">

    <target name="clean">

        <delete dir="build"/>

    </target>

    <target name="test"/>

    <target name="compile" depends="build"/>

    <target name="build" depends="clean">

        <echo level="info" message="Compiles correctly with JDK 1.5, and also 1.3, but that is hard to demonstrate"/>

        <antcall target="-build-one">

            <param name="version" value="io"/>

            <param name="source" value="1.5"/>

        </antcall>

        <echo level="info" message="Does not compile in 1.4 mode"/>

        <antcall target="-build-one">

            <param name="version" value="io"/>

            <param name="source" value="1.4"/>

        </antcall>

    </target>

    <!-- support methods -->

    <target name="-build-one">

        <fail message="You need to specify version number" unless="version"/>

        <fail message="You need to specify source number" unless="source"/>

        <property name="target" value="${source}"/>

        <mkdir dir="build/${target}/classes"/>

        <javac 

            srcdir="src-io" 

            destdir="build/${target}/classes" 

            source="${source}" target="${source}"

            classpath="${cp}"

            failonerror="false"

        />

    </target>

</project>