[Insight-developers] multiple shared ITK libraries on windows

[Gaëtan Lehmann]

Bill,

The wrapping is currently creating ~20 shared libraries, and will  
create a shared lib per module.
Do you think we can have this kind of problem with vnl and wrapping on  
windows? Have you done something special in CSwig wrapping to avoid  
that problem?
I'm afraid all the code generated by the wrapping won't fit in a  
single library on windows, so this may not be an option.

Regards,

Gaëtan




Le 17 mars 11 à 14:22, Gaëtan Lehmann a écrit :

>
> Will we have the vnl problem with wrapping?
> With wrapping, there will be as much libs as there are modules.
>
>
> Le 17 mars 11 à 01:27, Bill Hoffman a écrit :
>
>> On Wed, Mar 16, 2011 at 6:24 PM, Bill Lorensen <bill.lorensen at gmail.com 
>> > wrote:
>>> Here's a question.
>>>
>>> In old ITK, there were 15 shared libraries. Because of vnl
>>> limitations, Bill Hoffman says there should only be 8 (my  
>>> calculation
>>> and ITKCommon is the only one that is core ITK). With ITK modular
>>> there are potentially 45 (my calculation, not counting tests) shared
>>> libs. Supporting shared libs on windows platforms requires special
>>> magic.
>>>
>>> Should we build any shared libs in ITK modular on windows platforms?
>>> Is the maintenance burden too high?
>>>
>>
>> Prior to change 419, there was only one shared library ITKCommon in
>> ITK on windows. Since that change was in ITKv4, I would hardly call  
>> it
>> old ITK (maybe 4 month old itk...)....  :)
>>
>> Anyway, without figuring out how to make vnl shared, I don't think
>> that we can safely have more than one dll in ITK.  Dll's are an all  
>> or
>> nothing type of thing. I think I remember why this was done in the
>> first place. The main driving force for the original ITKCommon being
>> shared was so that plugins could be done for VolView.  With all  
>> static
>> ITK, the trouble was that each plugin got its own copy of the  
>> modified
>> time class static from ITKObject.  This of course totally broke the
>> pipeline.  So, I think that we should have one ITK dll as we did in
>> the past, and it should be the one that contains the static for
>> modified time.  That way plugin type applications can still be  
>> created
>> against ITK.  I will also investigate making vnl shared, but that
>> maybe too hard...
>>
>> -Bill
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> -- 
> Gaëtan Lehmann
> Biologie du Développement et de la Reproduction
> INRA de Jouy-en-Josas (France)
> tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
> http://voxel.jouy.inra.fr  http://www.itk.org
> http://www.mandriva.org  http://www.bepo.fr
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-developers

-- 
Gaëtan Lehmann
Biologie du Développement et de la Reproduction
INRA de Jouy-en-Josas (France)
tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
http://voxel.jouy.inra.fr  http://www.itk.org
http://www.mandriva.org  http://www.bepo.fr

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