[vtkusers] Bug in vtk build system: hardcoded path

[Benjamin Schindler]

Hi

I just installed a new version of qt along side the old one (Which is 
still required because it's linked against older libs). I just exchanged 
the envvars and expected things to work. Wrong :)
Any Project using cmake and which depends on vtk, will pull in the 
following files:

VTKLibraryDepends.cmake:  SET("QVTKWidgetPlugin_LIB_DEPENDS" 
"optimized;/pub/flowvis/local/qt4/qt-x11-opensource-src-4.3.3_inst/lib/libQtCore.so 
snip)
VTKConfigQt.cmake: ... similar as above
(The grep also gaves matches on libQVTK.so.5.2.0 and 
plugins/designer/libQVTKWidgetPlugin.so which also give a potential for 
some breakage)

So this means, vtk has path which get pulled in hardcoded. So if qt 
moves around (and envvars are adjusted), any vtk application using qt 
potentially breaks

Is there the possibility to fix this? Right now I'm forced to rebuild 
all of vtk and paraview which is a real pain

Thanks
Benjamin