[ITK] [ITK-users] Problems with writing filter using Xcode

Matt McCormick matt.mccormick at kitware.com
Fri Jul 3 11:02:45 EDT 2015 

Hi Vikash,

If you send all the files, I'll be able to take a look.

Thanks,
Matt

On Fri, Jul 3, 2015 at 10:10 AM, Vikash Gupta <vikash.gupta at inria.fr> wrote:

>
> Hi Matt,
> I did the manual instantiation in the .h file. Should I send the files...
> will you be able to have a look ?
>
> Thanks
> Vikash
> ------------------------------
>
> *From: *"Matt McCormick" <matt.mccormick at kitware.com>
> *To: *"Vikash Gupta" <vikash.gupta at inria.fr>
> *Cc: *"Sean McBride" <sean at rogue-research.com>, "insight-users at itk org" <
> insight-users at itk.org>
> *Sent: *Friday, July 3, 2015 4:22:24 AM
>
> *Subject: *Re: [ITK-users] Problems with writing filter using Xcode
>
> Hi Vikash,
>
> It depends on the content of your project files, but it does sound like it
> was a templated class.  A templated class needs to be either defined in a
> header or it needs to be explicitly instantiated over all the types it will
> be used with in a .cxx file to avoid link errors.  ITK usually puts the
> declaration in a .h files, then #include's the definition in a .hxx if
> manual instantiation is not used [1].
>
> HTH,
> Matt
>
> [1]
> https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Core/Common/include/itkImage.h#L297-L299
>
> On Fri, Jul 3, 2015 at 5:59 AM, Vikash Gupta <vikash.gupta at inria.fr>
> wrote:
>
>> Hey Matt,
>> Here is the extract from the CMakeLists.txt
>>
>> ADD_EXECUTABLE(testMapping testMapping.cxx)
>>
>> TARGET_LINK_LIBRARIES(testMapping ${ITK_LIBRARIES})
>>
>>
>> And the  filter MapLR2HR is called from TestMapping.cxx. It used to work
>> on a Linux system.
>>
>> Here is a stackexchange answer I found
>>
>>
>>
>> http://stackoverflow.com/questions/20230412/undefined-symbols-for-architecture-x86-64-shared-util-library-build-with-cmake
>>
>>
>> So when I defined the function in the .h file itself the error
>> disappeared. However, why this should happen for one particular function
>> and not all the others. It should be consistent. So I am not able to figure
>> that out.
>>
>>
>> Thanks for all the help
>>
>>
>> Vikash
>>
>>
>>
>> ------------------------------
>>
>> *From: *"Matt McCormick" <matt.mccormick at kitware.com>
>> *To: *"Vikash Gupta" <vikash.gupta at inria.fr>
>> *Cc: *"Sean McBride" <sean at rogue-research.com>, "insight-users at itk org" <
>> insight-users at itk.org>
>> *Sent: *Friday, July 3, 2015 2:41:49 AM
>>
>> *Subject: *Re: [ITK-users] Problems with writing filter using Xcode
>>
>> Hi Vikash,
>>
>> What does your CMakeLists.txt look like?  Are all executables created
>> added in the CMakeLists.txt file with the add_executable and
>> target_link_libraries command?
>>
>> Thanks,
>> Matt
>>
>> On Fri, Jul 3, 2015 at 3:51 AM, Vikash Gupta <vikash.gupta at inria.fr>
>> wrote:
>>
>>> Hey guys,
>>> So, I moved to a different IDE (Eclipse). I am still getting similar
>>> error.
>>>
>>> Here is the error
>>>
>>> Undefined symbols for architecture x86_64:
>>>   "itk::MapLR2HRFilter<itk::Image<float, 3u>
>>> >::SetTransform(itk::SmartPointer<itk::AffineTransform<double, 3u> >)",
>>> referenced from:
>>>       _main in testMapping.o
>>> ld: symbol(s) not found for architecture x86_64
>>> clang: error: linker command failed with exit code 1 (use -v to see
>>> invocation)
>>>
>>> After some googling i figured its a problem with OS X. I wonder if
>>> anyone knows how to fix it.
>>>
>>>
>>> Thanks
>>> Vikash
>>>
>>> ----- Original Message -----
>>> > From: "Vikash Gupta" <vikash.gupta at inria.fr>
>>> > To: "Sean McBride" <sean at rogue-research.com>
>>> > Cc: "insight-users at itk org" <insight-users at itk.org>
>>> > Sent: Thursday, July 2, 2015 1:19:21 PM
>>> > Subject: Re: [ITK-users] Problems with writing filter using Xcode
>>> >
>>> > Ok I am updating it ...
>>> >
>>> > ----- Original Message -----
>>> > > From: "Vikash Gupta" <vikash.gupta at inria.fr>
>>> > > To: "Sean McBride" <sean at rogue-research.com>
>>> > > Cc: "insight-users at itk org" <insight-users at itk.org>
>>> > > Sent: Thursday, July 2, 2015 1:16:44 PM
>>> > > Subject: Re: [ITK-users] Problems with writing filter using Xcode
>>> > >
>>> > > Or maybe I am doing something wrong.. Here is what I am doing step
>>> by step
>>> > >
>>> > > 1. Build ITK as I would normally considering a UNIX machine
>>> > > 2. Use a text editor to make the CMakeLists.txt and arrange my
>>> directories
>>> > > 3. use ccmake -GXcode to generate my xcode project
>>> > > 4. Open the Xcode project and write the filters I need.
>>> > >
>>> > >
>>> > > Vikash
>>> > >
>>> > > ----- Original Message -----
>>> > > > From: "Vikash Gupta" <vikash.gupta at inria.fr>
>>> > > > To: "Sean McBride" <sean at rogue-research.com>
>>> > > > Cc: "insight-users at itk org" <insight-users at itk.org>
>>> > > > Sent: Thursday, July 2, 2015 1:09:00 PM
>>> > > > Subject: Re: [ITK-users] Problems with writing filter using Xcode
>>> > > >
>>> > > > Hi Sean,
>>> > > > Yes I was using Xcode 6.xx But then I read on stackexchange that
>>> there is
>>> > > > some bug with the xcode 6.xx so rolled back to 5.xx . Also I was
>>> > > > wondering
>>> > > > if the .txx is a good extension for the counterpart to the .h file.
>>> > > >
>>> > > > Vikash
>>> > > >
>>> > > > ----- Original Message -----
>>> > > > > From: "Sean McBride" <sean at rogue-research.com>
>>> > > > > To: "Vikash Gupta" <vikash.gupta at inria.fr>, "insight-users at itk
>>> org"
>>> > > > > <insight-users at itk.org>
>>> > > > > Sent: Thursday, July 2, 2015 1:05:04 PM
>>> > > > > Subject: Re: [ITK-users] Problems with writing filter using Xcode
>>> > > > >
>>> > > > > On Thu, 2 Jul 2015 21:18:41 +0200, Vikash Gupta said:
>>> > > > >
>>> > > > > >I am using Mac OS X 10.10.3 and Xcode 5.1.1
>>> > > > >
>>> > > > > Maybe not the cause of your problem, but note that that's not a
>>> valid
>>> > > > > combination.  OS X 10.10.x requires Xcode 6.x (I forget exactly
>>> which).
>>> > > > >
>>> > > > > Cheers,
>>> > > > >
>>> > > > > --
>>> > > > > ____________________________________________________________
>>> > > > > Sean McBride, B. Eng                 sean at rogue-research.com
>>> > > > > Rogue Research                        www.rogue-research.com
>>> > > > > Mac Software Developer              Montréal, Québec, Canada
>>> > > > >
>>> > > > >
>>> > > > >
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>>
>>
>>
>
>
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