[Insight-users] ITK 1.6 and VTK compilation

[Brad King]

Sergio Andres wrote:
> Hi again,
> 
> I tried to delete Utilities/png, re-run cmake and build again, but I got 
> new errors because of dependencies
> of itk Readers on png  files.
> 
>>
>> I mean an empty build tree that did not have a previous ITK build in 
>> it.  Please find delete Utilities/png from the build tree, re-run 
>> cmake, and try the build again.  We need to figure out why the itkpng 
>> library does not have proper mangling of the png symbols.
>>
>> Thanks,
>> -Brad
>>
> 
> 
> Then I downloaded the version on CVS, and compiled and tried to build my 
> application.
> And I got only  4 errors related to vtkzlib.lib and itkzlib.lib 
> conficts. But those related to png have disappeared.
> 
> vtkzlib.lib(deflate.obj) : error LNK2005: _deflate_copyright already 
> defined in itkzlib.lib(deflate.obj)
> vtkzlib.lib(trees.obj) : error LNK2005: __length_code already defined in 
> itkzlib.lib(trees.obj)
> vtkzlib.lib(trees.obj) : error LNK2005: __dist_code already defined in 
> itkzlib.lib(trees.obj)
> 
> 
> After this, I compared files of two versions (ITK 1.6 and ITK CVS) and I 
> found differences in :
> 
> Utilities / png / itk_png_mangle.h
> 
> The CVS version has the following lines that 1.6 version file does not 
> contain:
> 
> line 153:  #define png_libpng_ver itk_png_libpng_ver
> 
> line 158:  #define png_pass_dsp_mask itk_png_pass_dsp_mask
> line 159:  #define png_pass_mask itk_png_pass_mask
> line 160:  #define png_pass_yinc itk_png_pass_yinc
> line 161:  #define png_pass_ystart itk_png_pass_ystart
> line 162:  #define png_pass_inc itk_png_pass_inc
> line 163:  #define png_pass_start itk_png_pass_start
> 
> 
> The file Utilities / zlib / itk_zlib_mangle.h is also different in CVS 
> version. It contains the following lines:
> 
> line 68:    #define inflate_copyright itk_inflate_copyright
> 
> line 71:   #define inflate_mask itk_inflate_mask
> 
> line 81:   #define z_errmsg itk_z_errmsg
> 
> 
> So, I suppose that all errors that I get are related to this files.... 
> and maybe something is necessary here (itk_zlib_mangle.h)

The changes to mangle these symbols have been merged to the ITK 1.6 
branch and will be included in the 1.6.1 release.

-Brad