[Insight-developers] RE: netlib changes are breaking builds

[Gaëtan Lehmann]

Le Thu, 28 Sep 2006 00:35:55 +0200, Steve Robbins <smr at sumost.ca> a écrit:

> Quoting Gaëtan Lehmann <gaetan.lehmann at jouy.inra.fr>:
>
>> To make something easily usable, we can:
>> (1) include the FFTW files in the tests only if USE_FFTWF or USE_FFTWD
>> are defined, and remove the if blocks elsewhere
>> (2) move the FFTW files, and all the files which are using them, to
>> insight application
>> (3) include fftw in ITK
>>
>> (1) is the simplest way to go. (3) should be useful if more filters are
>> using the FFTW ones.
>
> If I may interject, wearing my Debian-packager hat: if at all possible,  
> please avoid (3).  When the vendor already ships fftw (as I expect all  
> linux vendors do), you're exposing the ITK user to (a) duplication, and  
> (b) version-skew problems if they naively link an ITK project with FFTW  
> as well.
>
> By all means, provide easy-to-use bundles for those who are building  
> from source, perhaps including fftw.  But please keep the core ITK  
> distribution free of bits easily available elsewhere.
>

Let me reply with my mandriva packager hat :-)
ITK already contains some useful libraries - png, tif, vxl, zlib... but we  
can choose to use the system ones rather than the ones shipped with ITK,  
so there is no problem :-)
The only difference is that the users who using ITK on windows or other  
system whith no packages can make ITK work easily.

The main concerns for (3) are:
- it put more code to maintain in ITK - fftw is evolving slowly so it  
doesn't seem to be a real problem
- there can be a license incompatibility

Gaetan


-- 
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