Ant: Javac and classpath - another "What am I doing wrong"

[Joe Vahabzadeh]

I absolutely MUST be out of practice, because I don't recall having these problems before.

Keep in mind the structure is the same as mentioned in my other thread about deleting directories.

Here's the snipped of build.xml in the workspace/Project-Common directory.

	<target name="buildAll">
		<antcall target="buildModule">
			<param name="project.name" value="Project-1" />
			<param name="required.classpath" value="../Project-Common/lib" />
		</antcall>
		<antcall target="buildModule">
			<param name="project.name" value="Project-2" />
			<param name="required.classpath" value="../Project-1/bin;../Project-2/lib;../Project-Common/lib" />
		</antcall>
	</target>
	<target name="buildModule">
		<echo message="Building project: ${project.name}..." />
		<echo message="Classpath: ${required.classpath}" />
		<mkdir dir="../${project.name}/bin" />
		<javac srcdir="../${project.name}/src" destdir="../${project.name}/bin" includeAntRuntime="false">
			<classpath path="${required.classpath}" />
		</javac>
		<echo message="${project.name} build complete." />
	</target>

So, basically, Project-1 requires the .jar files (there are 2 of them) in Project-Common. Project-2 requires those same .jar files, plus a .jar file in Project-2/lib, plus the classes from Project-1.

What is causing this to fail? The compilation errors happen with Project-1, and they suggest that the system is acting as if the classpath reference is simply not there.

[Jeanne Boyarsky]

I think classpath is looking for jar files when using a string. You could create a directory structure in Ant that uses all the files in that directory. Take a look at the classpath ref section of this page

[Joe Vahabzadeh]

That works for Project-1, where the classpath has to refer only to directories that contain .jar files.

For Project-2, one of the directories will contain classfiles from Project-1. That seems to give it fits....

Here's a sample of what I'm trying to do, without all that semi-clever antcall stuff... Note that the lib references are written as lib/**/* because I may have sub-directories with their own .jar files in there in the future.

	<target name="buildProject-1">
		<echo message="Building project Project-1..." />
		<path id="test.class.path">
			<fileset dir="../Project-1">
				<include name="lib/**/*" />
			</fileset>
			<fileset dir="../Project-Common">
				<include name="lib/**/*" />
			</fileset>
		</path>
		<javac srcdir="../Project-1/src" destdir="../Project-1/bin" includeAntRuntime="false">
			<classpath refid="test.class.path" />
		</javac>
		<echo message="Project-1 build complete." />
	</target>

	<target name="buildProject-2">
		<echo message="Building project Project-2..." />
		<path id="test.class.path">
			<fileset dir="../Project-2">
				<include name="lib/**/*" />
			</fileset>
			<fileset dir="../Project-1">
				<include name="bin/" />
			</fileset>
			<fileset dir="../Project-Common">
				<include name="lib/**/*" />
			</fileset>
		</path>
		<javac srcdir="../Project-2/src" destdir="../Project-2/bin" includeAntRuntime="false">
			<classpath refid="test.class.path" />
		</javac>
		<echo message="Project-2 build complete." />
	</target>
</project>

EDIT: I'm an idiot... if I replace:

			<fileset dir="../Project-1">
				<include name="bin/" />
			</fileset>

with:

			<dirset dir="../Project-1/bin/" />

then it works.

NOW I've got to try to figure a way to be clever and put that in with an antcall sort of setup...

[Jeanne Boyarsky]

Thanks for posting the answer. Seeing the intermediate step and solution will help others!