[Insight-users] VNL/VXL binary import/export

[Luis Ibanez]

Hi Stefan,

You are correct, ITK doesn't contain the full source code of VXL.

Instead we mainly take advantage of the Numerics library from VXL.
(this is the VNL directory). And this is not specific to ITK 3.12.
Even in hte most recent release (ITK 3.16) you will find the same
situation.


Your option of using a SYSTEM VXL is the way to go in your case.


That is,
to build a full VXL on your own, and point your ITK build to it.

If you still are getting link errors for symbols in the directory:

                              core/vnl/io

chances are that you are not linking against the library:

                                vnl_io

Note that ITK will not add this library to the link line.

You have to do it on your own,
by adding it to the TARGET_LINK_LIBRARIES command
for you application (assuming that you are using CMake
for configuring your application).


    Regards,


         Luis


------------------------------------------------------------------------------
On Tue, Oct 20, 2009 at 6:15 AM,  <Stefan.Daenzer at gmail.com> wrote:
> Hi,
>
> I'm developing an application using ITK 3.12 and MS VS 8.0 on Windows XP. In
> this application the VNL vector and matrix classes are used extensively. I
> was now willing to write some of these vectors and matrices to files via the
> VNL binary I/O. Unfortunately, the corresponding libraries seem not to be
> included in ITK 3.12. I get some linker errors about unresolved external
> symbols when trying to include vnl headers like vnl/io/vnl_io_vector.h or
> vnl/io/vnl_io_matrix.h.
>
> My guess was that the complete VXL library is not included in ITK 3.12, so I
> built the complete VXL package on my machine and set the ITK-cmake-variable
> ITK_USE_SYSTEM_VXL to true. After building ITK 3.12 with external VXL again,
> the same linker errors persist.
>
> Am I missing something here?
>
> regards,
>
> Stefan
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