[Insight-developers] Using ITK with DCMTK

[Bradley Lowekamp]

Kent,

This is not an issue with directly using a ITK, it's an issue with using project which use ITK. That is it's a problem using SimpleITK. Digging a little further I see the following in SimpleITKTargets.cmake:


# Import target "SimpleITKCommon" for configuration "Release"
SET_PROPERTY(TARGET SimpleITKCommon APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
SET_TARGET_PROPERTIES(SimpleITKCommon PROPERTIES
  IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
  IMPORTED_LINK_INTERFACE_LIBRARIES_RELEASE "itksys; ...dcmdata;dcmimage;dcmimgle;dcmjpeg;dcmjpls;dcmnet;dcmpstat;dcmqrdb;dcmsr;dcmtls;ijg12;ijg16;ijg8;oflog;ofstd;ITKDICOMParser;.."
  IMPORTED_LOCATION_RELEASE "/home/blowekamp/build/SimpleITK/SimpleITK-build/lib/libSimpleITKCommon-0.6.a"
  )

I can't figure out how projects that use SimpleITK, can figure out the path to ITK libraries, but not the DCMTK ones...

Hrmm... I am now seeing the following in SimpleITKConfig.cmake:


# Find the ITKTargets.cmake file (fallback code that needs to stay here only
# temporarily - eventually ITK will export this value and this chunk can
# disappear...)
set(ITK_CONFIG_TARGETS_FILE "/home/blowekamp/build/SimpleITK/ITK-prefix/lib/cmake/ITK-4.3/ITKTargets.cmake")
if(NOT ITK_CONFIG_TARGETS_FILE)
  if(EXISTS "/home/blowekamp/build/SimpleITK/ITK-prefix/lib/cmake/ITK-4.3/ITKTargets.cmake")
    set(ITK_CONFIG_TARGETS_FILE "/home/blowekamp/build/SimpleITK/ITK-prefix/lib/cmake/ITK-4.3/ITKTargets.cmake")
  endif()
endif()

I don't see the DCTK libraries in ITKTargets.cmake perhaps thats the problem?

I am not really sure what is suppose to be happening with all these cmake files.

It would have been easiest to just disable DCMTK... But I guess these issues need to get address sooner rather than later now.

Brad

On Nov 29, 2012, at 2:36 PM, "Williams, Norman K" <norman-k-williams at uiowa.edu> wrote:

> You say "Please note that SimpleITK is a little weird on how it uses ITK."
> 
> This 'weird' sounds as though it is the problem.  What I used to test an
> ITK install (and also setting ITK_DIR to ITK-build, i.e.
> using a build tree) is below. This arrangement works.  The ${ITK_USE_FILE}
> 
> --------------------CMakeLists.txt
> cmake_minimum_required(VERSION 2.8)
> project(tst)
> 
> find_package(ITK REQUIRED)
> include(${ITK_USE_FILE})
> 
> add_executable(tst tst.cxx)target_link_libraries(tst ${ITK_LIBRARIES})
> 
> -------------------------tst.cxx
> #include <itkImage.h>
> #include <itkDCMTKImageIO.h>
> 
> 
> int main(int argc, char *argv[]){
>  itk::DataObject::Pointer ptr = A();
>  itk::DCMTKImageIO::Pointer imageio = itk::DCMTKImageIO::New();
>  exit(0);
> }
> 
> 
> 
> 
> --
> Kent Williams norman-k-williams at uiowa.edu
> 
> 
> 
> 
> 
> 
> On 11/29/12 8:29 AM, "Bradley Lowekamp" <blowekamp at mail.nih.gov> wrote:
> 
>> Hello,
>> 
>> I have narrowed down SimpleITK's issue[1] with building against that
>> latest ITK with DCMTK to the following. After "find_package(ITK
>> REQUIRED)" the following is defined:
>> 
>> ITK_LIBRARY_DIRS:
>> ITK_INCLUDE_DIRS:
>> /home/blowekamp/build/SimpleITK/ITK-prefix/include/ITK-4.3
>> 
>> But the libraries used on the command line are the following:
>> 
>> -ldcmdata -ldcmimage -ldcmimgle -ldcmjpeg -ldcmjpls -ldcmnet -ldcmpstat
>> -ldcmqrdb -ldcmsr -ldcmtls -lijg12 -lijg16 -lijg8 -loflog -lofstd
>> 
>> Hence they are not found.
>> 
>> That is they are relative, not absolute like the other ITK libraries. So
>> some how these either need to be changed to be absolute or the
>> ITK_LIBRARIES_DIRS, needs to be updated to include the installed path.
>> 
>> Please note that SimpleITK is a little weird on how it uses ITK. It does
>> not right away "include ( ${ITK_USE_FILE} )". And when the project is
>> installed an includes it also does not include the ITK use file, it only
>> export the LIBRARY_DIR path. This is because when you use SimpleITK from
>> the C++ interface is does not expose any ITK headers, so it nicely
>> encapsulated.
>> 
>> Thanks,
>> Brad
>> 
>> [1] http://open.cdash.org/viewBuildError.php?buildid=2688206
>> 
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