Question

I recently started to learn ant and have ran into some trouble, i basically have 2 packages and am trying to compile both, but both packages consist of java files which depend on each other(e.g. a.java from package1 is dependent on b.java from package2 and vice versa) hence i cant compile one with out the other for example below.

<?xml version="1.0"?>
  <project name="exampleproject" basedir="." default="compile">
  <property name="src1" value="package1"/>    
  <property name="src2" value="package2"/> 
  <property name="dest" value="build"/>
  <property name="classpath" value="${dest}"/>
<target name="clean">
    <delete dir="${dest}"/>
</target>
<target name="build" depends="clean">
    <mkdir dir="${dest}"/>
</target>
<target name="compile" depends="clean,build">
      <javac srcdir="${src1}" destdir="${dest}"
         classpath="${classpath}"
         includeantruntime="false">
       </javac>
       <javac srcdir="${src2}" destdir="${dest}"
         classpath="${classpath}"
         includeantruntime="false">
       </javac>
</target>
</project>

From testing this does not work as when a try to compile package1 the build fails as there are classes in package2 yet not compiled, the only solution i have is to restructure my program, anybody have any better ideas on how to solve this problem?

Thanks.

Answer 1

According to http://ant.apache.org/manual/Tasks/javac.html:

javac’s srcdir, classpath, sourcepath, bootclasspath, and extdirs
attributes are path-like structures and can also be set via nested
(note the different name!), , ,
and elements, respectively

So you can use

  <javac destdir="${dest}" classpath="${classpath}" includeantruntime="false">
    <src path="${src1}"/>
    <src path="${src2}"/>
  </javac>