[Insight-users] Itk 3.6 weird compile problem : kwsys/ios and stl directories

Tue Apr 15 21:44:06 EDT 2008

Hi Jeroen,

I think Dan's advice is probably the best way to go in your case.
That is, to take the list of include directories from another
CMake-configured ITK project.

----

Just to answer your previous questions regarding the directories

                       itksys/ios
                       itksys/stl

They have been in the configuration of Utilities/kwsys/CMakeLists.txt
for a while. See the CVS annotate of this file (lines 604-606):
http://www.itk.org/cgi-bin/viewcvs.cgi/Utilities/kwsys/CMakeLists.txt?annotate=1.137.2.1&root=Insight

    What ITK release were you using before updating to ITK 3.6 ?

Apparently the creation of the itksys/ios and itksys/stl directories
was introduced in kwsys on December 23, 2003:
http://www.itk.org/cgi-bin/viewcvs.cgi/Utilities/kwsys/CMakeLists.txt?annotate=1.137.2.1&root=Insight

             This would be as old as ITK 1.6...

-----

Regarding your second question:

            When to use or not to use itksys ?

It is usually a good idea to use itksys. It provides a layer
of portable functionalities across a large number of platforms.

One thing that could help a lot is for us to install most headers in
the same directory. In this way, you could build ITK, and then install
it in a different directory. Currently we install ITK with a directory
structure that is almost a copy of the build directory. However, we
could flatten that structure and aggregate most header files in a
smaller set of directories. This is probably a worthwhile undertaking
for the release of ITK 3.8.

Please let us know about the release of ITK that you were using before.

      Thanks

          Luis

--------------------------
J.S.Wijnhout at lumc.nl wrote:
>>>P.S.: I forgot to mention that I'm not using CMake to compile my own
>>>projects.
> 
> 
>>          Here is the root of the problem   :-)
>>CMake takes care of setting up the include paths for you.
>>Is there any particular reason why you are not using CMake ?
> 
> 
> At our institute we have a script that checks-out the appropriate CVS
> modules from our server (for example the ITK module that we have
> comitted to our CVS server) and create a visual studio solution. This is
> the main reason for not using CMake. Technically it would be possible to
> integrate CMake in our environment, but for now that seems like a lot of
> work.
> 
> 
>>Thanks for the report and for the quick explanation on the
>>source of the problem.
> 
> 
> Could you please elaborate on the use of itksys? When should I use this
> and when shouldn't I?
> 
> best,
> Jeroen
> 
> P.S.:
> I managed to trigger an internal compiler error on line 4 here:
> 
> #include <itkImageSpatialObject.h>
> 
> template < typename CoordRepType, int Dim >
> double f ( const itk::Point < CoordRepType, Dim > &_dummy )
> {
>   return 0.0;
> }
> 
> int main ( int, char ** )
> {
>   return 0;
> }
> 
> It wouldn't be fair to blame ITK for this, of course. Let's just say
> that today is not a good day for me, compiling wise.
> 
> 
> 
> ---------------------------
> J.S.Wijnhout at lumc.nl wrote:
> 
>>After some more trying I found out that the error is related to the 
>>cstddef file in Utilities/itksys. This file is included when an STL 
>>header is included. It turned out that I did not have the 
>>Utilities/itksys/ios and Utilities/itksys/stl folders in my included 
>>path and consequently the wrong STL headers were picked. However the 
>>code still doesn't compile, after including these folders
>>
>>I got errors like:
>>
>>e:\Projects\Test\Itk3\include\Common\itkMacro.h(524) : error C2653: 
>>'std' : is not a class or namespace name
>>
>>e:\Projects\Test\Itk3\include\Common\itkMacro.h(525) : error C2504: 
>>'ostringstream' : base class undefined
>>
>>So, it's getting worse. I finally decided not to include any itksys 
>>folders and finally my code compiled.
>>
>> 
>>
>>Although happy that my code is compiling again, I'm a bit worried: Am
> 
> I 
> 
>>supposed to use itksys, or not? Should I also refrain from linking to 
>>the itksys lib? Can I expect portability issues (assuming that this
> 
> was 
> 
>>the underlying reason for creating itksys)? And finally, why wasn't
> 
> this 
> 
>>an issue with ITK 3.4?
>>
>> 
>>
>>best,
>>
>>Jeroen  
>>
>> 
>>
>>P.S.: I forgot to mention that I'm not using CMake to compile my own 
>>projects.
>>
>> 
>>
>>
> 
> ------------------------------------------------------------------------
> 
>>*From:* insight-users-bounces at itk.org 
>>[mailto:insight-users-bounces at itk.org] *On Behalf Of
> 
> *J.S.Wijnhout at lumc.nl
> 
>>*Sent:* Tuesday, April 15, 2008 2:31 PM
>>*To:* insight-users at itk.org
>>*Subject:* [Insight-users] Itk 3.6 weird compile problem
>>
>> 
>>
>>Hi,
>>
>> 
>>
>>I downloaded ITK 3.6 this morning (before the official announcement 
>>btw.) and I'm having some troubles compiling the most basic program:
>>
>>#include <itkPoint.h>
>>
>> 
>>
>>int main ( int, char ** )
>>
>>{
>>
>>  return 0;
>>
>>}
>>
>> 
>>
>> 
>>
>>I get the following errors (I've only printed the firs three):
>>
>>C:\Program Files\Microsoft Visual Studio .NET 
>>2003\Vc7\include\xutility(111) : error C2146: syntax error : missing
> 
> ';' 
> 
>>before identifier 'difference_type'
>>
>>        C:\Program Files\Microsoft Visual Studio .NET 
>>2003\Vc7\include\xutility(115) : see reference to class template 
>>instantiation 'std::iterator_traits<_Ty*>' being compiled
>>
>>C:\Program Files\Microsoft Visual Studio .NET 
>>2003\Vc7\include\xutility(111) : error C2501: 
>>'std::iterator_traits<_Ty*>::difference_type' : missing storage-class
> 
> or 
> 
>>type specifiers
>>
>>C:\Program Files\Microsoft Visual Studio .NET 
>>2003\Vc7\include\xutility(122) : error C2146: syntax error : missing
> 
> ';' 
> 
>>before identifier 'difference_type'
>>
>> 
>>
>>I did not change anything in my compiler settings, although it seems 
>>related to that, errors in the STL headers mostly are. Still I can't 
>>seem to figure out what it wrong. For what it is worth, I can still 
>>compile code that does not use ITK. I'm using Visual Studio 2003 SP1. 
>>Any pointers are most welcome.
>>
>> 
>>
>>best,
>>
>>Jeroen
>>
>>
>>
> 
> ------------------------------------------------------------------------
> 
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> 
> 