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From Geir Magnusson Jr <g...@pobox.com>
Subject Re: [drlvm] Removing classlib-related tasks from VM build (was Doing the minimum to support Java 5 classfiles)
Date Thu, 06 Jul 2006 14:41:24 GMT

Andrey Chernyshev wrote:
> On 7/5/06, Salikh Zakirov <Salikh.Zakirov@intel.com> wrote:
>> Mark Hindess wrote:
>> >  Salikh Zakirov wrote:
>> >> Using the fixed classlib snapshot will remove one factor
>> >> of uncertainty, and will make the DRLVM behaviour more reproducible.
>> >
>> > -1
>> >
>> > Doing this will hide issues that appear when changes to classlib breaks
>> > drlvm.  At this stage in the project, I'd rather have such issues be as
>> > visible as possible.  Such breakages should be relatively easy to fix
>> > and any drlvm developer should be capable of rolling back classlib svn
>> > until things are fixed if they get impatient.
>> >
>> > I don't see how it significantly affects reproducibility since it is
>> > trivial to check/record the versions of classlib and drlvm svn when an
>> > error occurs?
>> I agree that recording revision numbers of both classlib and drlvm
>> will be
>> sufficient to reproduce the problem.
>> The hard part is finding the "good" ones when the latest revisions
>> do not work, in a case when someone wants to work on something different
>> than fixing the latest breakages.
>> I think that the reasonable compromise is to have both capabilities in
>> the
>> build system (build with classlib snapshot or with latest checkout), and
>> leave it up to contributors to decide which way to use.
> One more idea - we have a web page with the classlib snapshots over here:
> http://people.apache.org/dist/incubator/harmony/snapshots/ with an
> option of downloading the latest classlib snapshot, or a snapshot at a
> fixed date.
> By default, drlvm build could use just the latest one. This will allow
> to catch the possible classlib/drlvm integration issues at the
> frequency of creating build snapshots. On the other hand, in case the
> latest classlib appears to be incompatible with vm, people can easily
> change the link and use any of previous snapshots. How does that
> sound?

I'm -1 for adding any more auto-fetches to DRLVM.


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