GNU bug report logs - #18715
mdate-sh output is timezone dependant triggering rebuilds

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "Francisco Blas Izquierdo Riera (klondike)" <klondike <at> gentoo.org>
To: bug-automake <at> gnu.org
Subject: mdate-sh output is timezone dependant triggering rebuilds
Date: Tue, 14 Oct 2014 04:51:28 +0200

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The output of mdate-sh depends on the local timezone used by the system
which may trigger unneeded rebuilds in some situations (especially when
the packaging machine and the building machine are on different timezones).

An example of such an issue can be found at
https://bugs.gentoo.org/show_bug.cgi?id=520818

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Message #8 received at 18715 <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: "Francisco Blas Izquierdo Riera (klondike)" <klondike <at> gentoo.org>,
 18715 <at> debbugs.gnu.org
Subject: Re: bug#18715: mdate-sh output is timezone dependant triggering
 rebuilds
Date: Tue, 14 Oct 2014 05:58:20 -0600

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merge 18714 18715
tag confirmed
thanks

On 10/13/2014 08:51 PM, Francisco Blas Izquierdo Riera (klondike) wrote:
> The output of mdate-sh depends on the local timezone used by the system
> which may trigger unneeded rebuilds in some situations (especially when
> the packaging machine and the building machine are on different timezones).
> 
> An example of such an issue can be found at
> https://bugs.gentoo.org/show_bug.cgi?id=520818

Thanks for the report.  Yes, we should fix mdate-sh to output results in
UTC, if it is easy to write portable shell to normalize dates (with GNU
date it is easy, but mdate-sh has to run on systems that lack GNU date).

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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Message #13 received at 18715 <at> debbugs.gnu.org (full text, mbox):

From: "Francisco Blas Izquierdo Riera (klondike)" <klondike <at> gentoo.org>
To: Eric Blake <eblake <at> redhat.com>, 18715 <at> debbugs.gnu.org
Subject: Re: bug#18715: mdate-sh output is timezone dependant triggering
 rebuilds
Date: Tue, 14 Oct 2014 20:53:17 +0200

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El 14/10/14 13:58, Eric Blake escribió:
> Thanks for the report. Yes, we should fix mdate-sh to output results
> in UTC, if it is easy to write portable shell to normalize dates (with
> GNU date it is easy, but mdate-sh has to run on systems that lack GNU
> date). 
Well the suggested workaround for now is setting the TZ variable to UTC,
I'm not sure how well that'd work though.

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