[Insight-users] Explicit Template Instatiation

[Julien Jomier]

Hi Jordi,

Explicit instantiation is now implemented in the current ITK cvs.
The generation of the instantiation files is done using CMake and based 
on WrapITK. You have an advanced option when you run CMake: 
ITK_EXPLICIT_INSTANTIATION. Then you can select the types and dimensions 
you'd like to explicitly instantiate.

Explicit instantiation is new feature and is backward compatible and 
does not affect the current behavior of the toolkit.
However, when you turn this option on, you're current code which uses 
ITK should compile faster and the size of your libraries and executables 
  should decrease.

We have written some documentation on the wiki. The plan is to submit an 
article on the Insight Journal.
http://www.itk.org/Wiki/index.php?title=Proposals:Explicit_Instantiation&redirect=no

Let us know if you need more information and/or if you have any issues 
with this new feature,

Julien

Jordi Inglada wrote:
> Hello,
> 
> I was reading the ITK Roadmap at
> <http://www.itk.org/Wiki/ITK_Roadmap_2005_2006> and saw the paragraph
> about explicit template instatiation.
> 
> Maybe this is a stupid question, but I was wondering if this new feature
> will have an impact in existing code which uses ITK.
> 
> This is important for us, since we are developping a Remote Sensing
> Image Processing Toolbox* which encapsulates ITK. All our classes and
> applications are based on ITK.
> 
> Will the explicit template instatiation be an option at the CMake level?
> 
> Where can I get more information about it?
> 
> Thanks.
> 
> Jordi
> 
> 
> *ORFEO Toolbox available at
> <http://smsc.cnes.fr/PLEIADES/A_prog_accomp.htm>.
>