dependencies

[D Gross <ju...@onebox.com>]

I'm new to ANT and old to make.  I would like to understand how to add
dependency rules to ant to handle the simple case of cross class dependencies.
 I've read posts regarding <taskdef name="depend"...> and the depend="true"
in the <javac> task, but either I'm not understanding it or it doesn't
work.  (At least I know the former is true)

Here's the example:
Class A has method foo() in A.java
Class B calls A.foo() in B.java
A.foo() is changed to take, say an int: foo(int x)

When rebuilding with ANT, A.java will get recompiled, but not B.java.

I've looked at jikes which will spit out the dependency information that
would solve this problem, if I could just get the information into ANT
so that it passes both A.java and B.java to javac.

Thanks,
-- Dave Gross


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RE: dependencies

[Sylvain Rey <ra...@bluedot.com>]

You should have a look at the optional task "depend". It does exatcly what
you want.
Just call it before "javac".

 <target name="src" depends="prepare"
         description="Compile all updated source files with dependencies.">
   <depend closure="yes"
           cache="${dep}"
           srcdir="${src}"
           destdir="${build}"
   />
   <javac verbose="false"
          srcdir="${src}"
          destdir="${build}"
	    classpath="${classpath.compile}"
   />
 </target>

Cheers
Sylvain

> From: D Gross [mailto:justdave@onebox.com]
>
> I'm new to ANT and old to make.  I would like to understand how to add
> dependency rules to ant to handle the simple case of cross class
> dependencies.
>  I've read posts regarding <taskdef name="depend"...> and the
> depend="true"
> in the <javac> task, but either I'm not understanding it or it doesn't
> work.  (At least I know the former is true)
>
> Here's the example:
> Class A has method foo() in A.java
> Class B calls A.foo() in B.java
> A.foo() is changed to take, say an int: foo(int x)
>
> When rebuilding with ANT, A.java will get recompiled, but not B.java.
>
> I've looked at jikes which will spit out the dependency information that
> would solve this problem, if I could just get the information into ANT
> so that it passes both A.java and B.java to javac.
>
> Thanks,
> -- Dave Gross
>
>
> __________________________________________________
> FREE voicemail, email, and fax...all in one place.
> Sign Up Now! http://www.onebox.com