[ITK] [ITK-dev] Module_ITKIOGDCM:INTERNAL=OFF

[Bradley Lowekamp]

Hello,

Have you looking into "ITK_USE_SYSTEM_GDCM", this should allow ITK to use the same version of GDCM that the rest of your application is?

For the modular build, have you looked into disabling "BUILD_TESTING"? Also please keep in mind that the a module's status is cached in CMake. So you must start with a fresh directory then configure from the command line which modules are on and off. 

Many ImageIOs are needed to do testing [1], supporting DICOM and DICOM metadata are of core importance for ITK, so we do test with it in many places.The modularization works really good without the ITK testing enabled. But the interdependency of testing that everything works does enable most modules.

HTH,
Brad

[1] https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Core/TestKernel/itk-module.cmake

On Sep 4, 2015, at 3:55 AM, Mathieu Malaterre <mathieu.malaterre at gmail.com> wrote:

> Dear all,
> 
> My goal is to be able to compile ITK without the GDCM module.
> 
> Long story short, GDCM toolkit is not being mangled, which means very
> complex build setup to be able to use GDCM and ITK in an application.
> 
> So far I have tried setting:
> 
> Module_ITKIOGDCM:INTERNAL=OFF
> 
> with no luck
> 
> I suspect that GDCM is activated by ITK_BUILD_DEFAULT_MODULES, so I tried:
> 
> $ cmake -DITK_BUILD_DEFAULT_MODULES:BOOL=OFF
> 
> this leads to:
> 
> -- Check if the system is big endian - little endian
> CMake Error at Examples/CMakeLists.txt:2 (message):
>  BUILD_EXAMPLES requires ITK_BUILD_DEFAULT_MODULES to be ON
> 
> 
> -- Configuring incomplete, errors occurred!
> 
> 
> Later I tried:
> 
> $ cmake -DITK_BUILD_DEFAULT_MODULES:BOOL=OFF -DBUILD_EXAMPLES:BOOL=OFF ..
> 
> which states:
> 
> -- Enabled ITKIOGDCM, needed by [ITKTestKernel].
> and
> -- Enabled ITKTestKernel, needed by [ITKGroup_Core].
> 
> 
> However I do not want to set -DITKGroup_Core:BOOL=OFF (obvisouly).
> 
> Is there any particular reason to have GDCM be part of the core group ?
> 
> 
> 
> Thanks,
> -- 
> Mathieu
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