Dmitri - Thanks for the response, but this does not work.

The problem is that state (properties) set by the target of an <antcall> will not be available to the calling environment.

I'm still looking for an elegant solution.

--Cyril

________________________________________
From: Dmitri Farafonov [farafonov@gmail.com]
Sent: Thursday, December 13, 2007 8:07 PM
To: Ant Users List
Subject: Re: How to conditionally run a group of targets?

You can use "if" from ant-contrib:
http://ant-contrib.sourceforge.net/tasks/tasks/if.html
<if><isset property="doit"/>
    <then><antcall>....</antcall></then>
</if>
All possible "if" conditions are here:
http://ant.apache.org/manual/CoreTasks/conditions.html

Hope it helps,
Dmitri.

Cyril Sagan wrote:
> Our build script needs to run an arbitrary *group* of targets based on
> a single property.  Can you help me find a clean way to do this?
>
> Here's an "almost solution" which illustrates what I'd like to
> accomplish:
>
>     <target name="all" depends="init, decide_to_run_group, wrapper" />
>
>     <target name="decide_to_run_group">
>         <condition property="doit" value="true">
>             <some-boolean-test/>
>         </condition>
>     </target>
>
>     <target name="wrapper" if="doit">
>         <antcall>
>             <target name="A" />
>             <target name="B" />
>             <target name="C" />
>             <target name="D" />
>         </antcall>
>     </target>
>
>
> This does not work.  The problem is that any properties set in the
> <antcall>'d targets will not be visible in the calling environment.
> Targets A,B,C,etc -- not all of which I control, so I cannot
> restructure -- may have side effects, setting state in properties that
> I need to have access to.
>
> Regarding the "<antcall> almost solution", I see that there are ways
> to pass properties "down to" <antcall>, but I do not know of a clean
> way to "pass back".  I found a year+ old question on ant-dev asking
> about this, but never saw an answer.
>
> In any case, we aren't set on using (enhancing?) <antcall>, it was
> just close to a solution.
>
> Goal is to group the set of targets.  I'm hoping to find a solution
> less awkward than this:
>     <target name="A" if="doit" ... />
>     <target name="B" if="doit" ... />
>     <target name="C" if="doit" ... />
>     <target name="D" if="doit" ... />
>
> Thanks for any suggestions.
>
> --Cyril
>
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