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From Vikas Phonsa <>
Subject Updating Manifest Files
Date Thu, 24 Jul 2003 00:46:54 GMT
I am using ant to make jars and am specifying a Manifest File to be used in
the jars.
How can have ant to automatically update the Manifest File every time I do a
build so that the Manifest file would have the current time stamp as the
Version Number/Tag of the jars to be created.

Any ideas,Help


-----Original Message-----
From: David Knox [] 
Sent: Wednesday, July 23, 2003 5:07 PM
To: 'Ant Users List';
Subject: RE: Trying to get rid of makefiles

Hi Leonardo,
>From my experience using Ant for the past few years, I've found that Ant
will actually be faster because it calls the Java compiler once for all
files in a <fileset> whereas implicit rule processing in make will call
the compiler once per file. 

--hope this helps

> -----Original Message-----
> From: Leonardo Abreu de Barros []
> Sent: Wednesday, July 23, 2003 5:02 PM
> To:
> Subject: Trying to get rid of makefiles
> Hi all,
> I work in a company that has a long history using makefiles. Since I
> joined it, I proposed to migrate to Ant. Some people resist to
> changes, some people agree, as long as all benefits provided by the
> makefiles are covered by Ant.
> I've already reproduced all behaviors but one: currently, all java
> classes names are declared explicitly in the makefile, and sent to
> the java compiler. It rebuilds all the class files, at each build.
> They want this behavior in order to detect broken code, due to
> changes on a base class, for example.
> The problem is that Ant, specifically the <javac> task, only
> recompiles ".class" if the timestamp differs from the related ".java"
> file. I've read on documentation that to detect this kind of broken
> dependencies, you should perform "clean builds" from time to time.
> I proposed this solution, but it wasn't accepted. They think it's a
> loss of time (even if it's ridiculous) to delete all ".class" files
> before calling the compiler. If I'm not able to reproduce this
> behavior with Ant, they prefer to keep the makefiles.
> Does anyone have any idea of how I could reproduce this behavior
> using Ant? Any other possible solution?
> Thanks in advance,
> Leonardo Barros
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