[Debian-science-sagemath] Fwd: Bug#888606: cysignals: FTBFS with debhelper/11.1 due to empty build target

[Tobias Hansen]

Hi all,

I could not reproduce the FTBFS of giac on amd64. Should I just reupload giac with the unimportant change that is in git to see if it works now? Or upload the new version 1.4.9.45? (sagemath 8.2.beta4 uses this version.)

However with giac built against libmpfr6 and libmpfr4 uninstalled I still get the same segfaults with sagemath.

flint-arb and cypari2 also have problems building. :(

Best,
Tobias



On 01/29/2018 02:22 PM, Tobias Hansen wrote:
> Ah yes, giac is still using libmpfr4 because its rebuild failed on amd64.
>
> Best,
> Tobias
>
> On 01/28/2018 01:38 PM, Ximin Luo wrote:
>> I saw some issue, I forgot where, that pointed out both mpfr4 and mpfr6 were getting pulled into certain builds. You could check your sbuild logs to see if both are getting installed.
>>
>> X
>>
>> Tobias Hansen:
>>> Hi,
>>>
>>> yes, I think you can update cysignals in unstable. I applied upstream patches for new mpfr and matplotlib versions to sagemath and built it with both versions of cysignals yesterday and got the same problems:
>>>
>>> sage -t --long src/sage/rings/number_field/number_field.py  # Bad exit: 1
>>> sage -t --long src/sage/rings/polynomial/plural.pyx  # Killed due to segmentation fault
>>> sage -t --long src/sage/structure/factorization_integer.py  # Killed due to kill signal
>>> sage -t --long src/sage/structure/sage_object.pyx  # Killed due to abort
>>>
>>> I have had the failure with number_field.py on my computer for a while, but it doesn't happen on buildds. The others are new, but I don't even know if the libmpfr6 transition is finished...
>>>
>>> Best,
>>> Tobias
>>>
>>>
>>> On 01/28/2018 06:11 AM, Jerome BENOIT wrote:
>>>> Hello,
>>>>
>>>> this issue was fixed in 1.6.6+ds-2 which is current in experimental:
>>>> can we migrate cysingals 1.6.6+ds-2 to unstable ?
>>>>
>>>> Thanks,
>>>> Jerome
>>>>
>>>>
>>>> -------- Forwarded Message --------
>>>> Subject: Bug#888606: cysignals: FTBFS with debhelper/11.1 due to empty build target
>>>> Resent-Date: Sat, 27 Jan 2018 17:51:02 +0000
>>>> Resent-From: Niels Thykier <niels at thykier.net>
>>>> Resent-To: debian-bugs-dist at lists.debian.org
>>>> Resent-CC: Jerome Benoit <calculus at rezozer.net>
>>>> Date: Sat, 27 Jan 2018 18:44:34 +0100
>>>> From: Niels Thykier <niels at thykier.net>
>>>> Reply-To: Niels Thykier <niels at thykier.net>, 888606 at bugs.debian.org
>>>> To: Debian Bug Tracking System <submit at bugs.debian.org>
>>>>
>>>> Source: cysignals
>>>> Version: 1.6.5+ds-2
>>>> Severity: serious
>>>> Tags: patch
>>>>
>>>> Hi,
>>>>
>>>> The cysignals package FTBFS with debhelper/11.1 as it has an empty
>>>> build target.  This is caused by debhelper had a bug in its handling
>>>> of "explicitly defined rules targets" that has now been fixed.
>>>>
>>>> Previously, this happened to work because dpkg-buildpackage would
>>>> invoke "debian/rules build" (which would be a no-op) followed by
>>>> "fakeroot debian/rules binary".  During the binary target, dh's
>>>> suboptimal handling would run the build commands.
>>>>
>>>>
>>>> The solution is trivial but less pretty; explicitly define "build"
>>>> with the same content as the "%:" target (or rename the "build" folder
>>>> and drop the ".PHONY" target).  I have attached a patch for this.
>>>>
>>>>
>>>> More details can be found in:
>>>>  * #886901 comment #35
>>>>  * #887688 comment #37
>>>>  * #880840
>>>>
>>>> Apologies for the inconvenience.
>>>>
>>>> Thanks,
>>>> ~Niels
>>>>
>>>>
>>>>
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>>>> Debian-science-sagemath at lists.alioth.debian.org
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>>>
>>>
>>>
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