[Insight-developers] Itkzlib stuck at version 1.1.4?

[Luis Ibanez]

Hi Kent,

To my knowledge, there is no particular reason why we are sticking to
zlib 1.1.4.  Being pragmatic, it takes a certain amount of effort to update
the libraries, so we usually wait until there is a compelling reason for
updating.

The more ITK gets used in clinical applications, the more careful we should
be when updating components. This actually discourage us from continuously
updating all the third party libraries, since these update bring
uncertainty,
and sometimes they raise backward compatibility issues.


Have you found a situation where zlib 1.1.4 is giving you incorrect results,
performance penalties or lacking some functionality that you could get
from a more recent version of zlib ?



  Please let us know,


      Thanks


--------------------------------------------------
On 7/18/07, Steve M. Robbins <steve at sumost.ca> wrote:
>
> On Wed, Jul 18, 2007 at 05:08:12PM -0400, Sean McBride wrote:
> > On 7/18/07 4:01 PM, kent williams said:
> >
> > >Is there a reason itk zlib is stuck at 1.1.4?  The current version is
> 1.2.3.
> > >
> > >There shouldn't be any compatibility problems, since ITK can configure
> to
> > >use the system zlib, which is 1.2.3 on most current linux/osx systems.
> >
> > I recently wondered that as well.  VTK is also stuck at 1.1.4.  VTK also
> > has the option to use the system zlib (VTK_USE_SYSTEM_ZLIB) but alas if
> > you turn it on on Mac OS X, VTK can't build because OS X includes 1.2.x
> > not 1.1.x.  I assume this is because of zlib API changes.
>
> My Debian system has VTK built against the system zlib, version 1.2.3.3
> so VTK manifestly compiles with newer zlib; whether it runs correctly
> or not I can't say ;-)
>
> -Steve
>
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