[vtkusers] System Zlib -> metaio doesn't seem to work

[Sean McBride]

On 8/2/07 1:39 PM, Atwood, Robert C said:

>> VTK's is 1.1.4, which is quite old.
>Isn't that a security hole of some kind?

Actually, I don't think so.  Earlier 1.2.x releases had security
problems, but the newest, 1.2.3, seems to be fine.  1.1.4 fixed a
security issue in 1.1.3.

>I though many updates to zlib
>since then were security patches? I don't remember any interface changes
>, at least my own software that uses zlib has just kept working through
>these updates

Then there is hope that updating VTK/ITK to the newest zlib should be
straightforward, assuming there aren't many local changes.

>why is this old version desireable and why should it need
>differently named functions ?

To my knowledge, it is undesirable.  I guess kitware just does not see
updating it as a priority.  I suggest filing a bug with them, let me
know the #.

The name mangling is done to prevent name collisions, I guess maybe
there was a problem with that in the past.  They do it for all/many 3rd
party libs in VTK, like freetype.

Did you try removing the two occurrences of "vtk_zlib_mangle.h"?  Were
you able to build then?

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada