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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;"><span style="font-size: 13.3333px;">I am using xcode 7.3.1, ITK v4.10, and SimpleITK v0.10.0.</span>
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<div style="font-size: 13.3333px;">I should clarify that SimpleITK itself compiles and links allright, but the error happens when linking against my own extensions to SimpleITK (https://github.com/kaspermarstal/SimpleElastix). The way itkStaticConstMacro and
 the ImageDimension is used here here <a href="https://github.com/kaspermarstal/elastix/blob/641c83af7f97dfe2397e26e832cdda76e166fd14/src/Core/Main/elxElastixFilter.h#L80-L81" target="_blank" style="font-size: 10pt;">https://github.com/kaspermarstal/elastix/blob/641c83af7f97dfe2397e26e832cdda76e166fd14/src/Core/Main/elxElastixFilter.h#L80-L81</a> <span style="font-size: 10pt;">seems
 to hide the ImageDimension symbol during linking, much in the same way as in the referenced gerrit discussion.</span></div>
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<div style="font-size: 13.3333px;"><span style="font-size: 10pt;">There are workarounds of course, just thought you should know.</span></div>
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<div style="font-size: 13.3333px;"><span style="font-size: 10pt;">Kasper</span></div>
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<div id="divRpF352460" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Lowekamp, Bradley (NIH/NLM/LHC) [C] [blowekamp@mail.nih.gov]<br>
<b>Sent:</b> Tuesday, August 23, 2016 9:10 PM<br>
<b>To:</b> K.K. Marstal<br>
<b>Cc:</b> insight-developers@itk.org<br>
<b>Subject:</b> Re: [ITK] [ITK-dev] BUG: Undefined symbol ImageBase::ImageDimension with clang compiler<br>
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<div>Hello,
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<div class="">Do you have a specific version of SimpleITK and ITK and Xcode which cause this problem?</div>
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<div class="">The current SimpleITK master with Xcode 7.3 seems ok to me.</div>
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<div class="">Brad</div>
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<div class="">On Aug 23, 2016, at 12:04 PM, K.K. Marstal <<a href="mailto:k.marstal@erasmusmc.nl" class="" target="_blank">k.marstal@erasmusmc.nl</a>> wrote:</div>
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Hello,
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</div>
<div class="">As discussed in this gerrit ticket <a href="http://review.source.kitware.com/#/c/20900/," class="" style="font-size:10pt" target="_blank">http://review.source.kitware.com/#/c/20900</a> the recent change to itkGetStaticConstMacro hides the ImageBase::ImageDimension
 symbol for linking in some cases. While the problem seemed to have been solved in that particular case, I am getting the same error compiling SimpleITK and linking against the Python wrapper on Mac OS X with GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)
 compiler. </div>
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<div class="">The issue is fixed if I change line 780 of itkMacro.h "itkStaticConstMacro(name,type,value) static ITK_CONSTEXPR type name = value" back the version of itk 4.8.2, namely "#define itkStaticConstMacro(name, type, value) enum { name = value }". To
 clarify, the problem seem to be with ITK, not with SimpleITK.</div>
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<div class="">Kind Regards,</div>
<div class="">Kasper Marstal</div>
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