[Rivet] python in rivet 1.8.1

[Mikhail KIRSANOV]

  Hello, Andy,
  I can add some more details. We had python 2.4.3 installed. The error
disappeared after installing python2.6. Well, may be you can just try
to do at the configuration step what you do after the compilation?
  About timing: note that we have several platforms, and slc5 32 bits is 
rare, so it is on a not very new computer.
                                     Cheers, Mikhail



On 07/09/2012 07:17 PM, Andy Buckley wrote:
> Hi Mikhail,
>
> Odd -- that "import dl" is actually a fallback in the case that "import
> ctypes" doesn't work, so your Python installation must have been a real
> mess! So I'm not sure we should add an explicit test for what should be
> a standard Python behaviour: we can't write our configure script to test
> for *every* standard Python feature that might be used!
>
> At least this should have been a runtime failure, meaning that you could
> update your Python installation without having to restart the
> compilation from scratch: right?
>
> Are you able to test the broken Python setup now? My impression is that
> a test of "python -m ctypes || python -m dl" should be sufficient as a
> test... if so, I'll add it to our configure script for next time.
>
> Andy
>
> PS. 1-2 hours to compile Rivet? Really?! You need a better build
> machine, or failing that, a distcc setup! Seriously, if your job is to
> build generators and it takes hours to build Rivet, how long does
> ThePEG+Herwig++ take? I'm assuming that you're already using parallel
> make, i.e. -j5 or so depending on your build machine.
>
>
> On 09/07/12 18:07, Mikhail KIRSANOV wrote:
>>   Dear rivet developers,
>>   Sorry for my previous e-mail with incomplete info.
>>
>>   This is not a bug report, but a feature request from GENSER. On our
>> computer python was not up-to-date and I had the following error in the
>> end of compilation:
>>
>> PYTHONPATH=../pyext: \
>> /afs/cern.ch/sw/lcg/external/Python/2.6.5/x86_64-slc5-gcc43-opt/bin/python
>> mk-analysis-html analyses.html
>> Traceback (most recent call last):
>>    File "mk-analysis-html", line 41, in<module>
>>      import dl
>> ImportError: No module named dl
>> make[1]: *** [analyses.html] Error 1
>> make[1]: Leaving directory
>> `/genser1/mkirsano/GENSER/simu/work/tmp28/Rivet-1.5.1/doc'
>> make: *** [all-recursive] Error 1
>>
>> It seems that it happens even after the compilation, at the
>> documentation making. After updating python it is OK, but we understood
>> it quickly only because we remembered a similar problem from the past,
>> otherwise the reason of this error is not obvious. It is also rather
>> annoying that it happens after 1 - 2 hours of compilation.
>>
>> So, the request is: is it possible to check that the corresponding part
>> of python works before the compilation, at the configure step?
>>
>>                                          Regards, Mikhail
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>
>