How to add to classpath all classes from set of directories in ant?

ant

Solution

You can set up a path to include all .class files from your specific directories:

<path id="mypath"> 
  <fileset dir="${root.dir}">
    <include name="lib1dir/**/*.class lib2dir/**/*.class lib3dir/**/*.class"/>
  </fileset>
</path>

However, if you want to use this path as a classpath, you only need to reference the root folders, otherwise you will get `ClassNotFoundError`s as the package names translate into directories:

<path id="build.classpath"> 
  <dirset dir="${root.dir}">
    <include name="lib1dir lib2dir lib3dir"/>
  </dirset>
</path>

Then reference the path by its id when using (e.g. for classpath):

<javac srcdir="${src.dir}" destdir="${build.dir}" classpathref="build.classpath" />

Problem

How to add to classpath all classes from set of directories? I have following property: class.dirs=lib1dir,lib2dir,lib3dir There are classes under these directories. Is it possible to add all classes under these directories to classpath? Something like: ``` <classpath> <dirset dir="${root.dir}" includes="${class.dirs}/**/*.class"/> </classpath> ``` or ``` <classpath> <pathelement location="${class.dirs}" /> </classpath> ``` But this example does not work, of course.

Original source