[ITK] [ITK-dev] Missing IO factories when building without cmake

[Bill Lorensen]

Folks,

We have recently seen a couple of users who build their ITK apps
without cmake. When they try to read or write images they get a
message like this:
Description:  Could not create IO object for file
foo.png
  Tried to create one of the following:
  You probably failed to set a file suffix, or
    set the suffix to an unsupported type.

I submitted a gerrit patch:
http://review.source.kitware.com/#/c/14909/

to provide a better description of the exception:

Description:  Could not create IO object for writing file foo.img
  Tried to create one of the following:
  There are no registered IO factories. You probably built your
project without using cmake
  You can register the IO factories you need with:
    #include "itkXXXImageIOFactory.h"
    itk::XXXImageIOFactory::RegisterOneFactory();
     where XXX is e.g. Nifti, PNG, Meta...
       #include "itkNiftImageIOFactory.h"
       itk::NiftiImageIOFactory::RegisterOneFactory();
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