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From Stefan Bodewig <bode...@apache.org>
Subject Re: Jar task: --module-version and --main-class options
Date Tue, 02 Oct 2018 05:20:41 GMT
On 2018-10-01, Bruce Alspaugh wrote:

> Java 9 and later add several new options to the jar tool:

> https://docs.oracle.com/en/java/javase/11/tools/jar.html

> I would like to use the --module-version and --main-class options with
> Ant's Jar task, but I could not find them in the manual:

> https://ant.apache.org/manual/Tasks/jar.html

> I can accomplish this using exec, but it would be simpler if I could
> use those options with the jar task. Can those two options be added?

I think there already is a Bugzilla enhancement request for --main-class
but none for --module-version. Can you either please update the existing
ticket[1] or add a new one for the second part?

As for "can it be done?": of course, but it may be a bit more difficult
than you think. Ant does not use the JDK's jar tool at all but rather
builds the jar by itself (that's just a ZIP with some extra contents,
after all). So we'll need to figure out from the docs what those
switches actually do and mimic the outcome.

Stefan

[1] https://bz.apache.org/bugzilla/show_bug.cgi?id=62772

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