[vtkusers] Fwd: undefined reference problem while linking

[Mathieu Malaterre]

On Wed, Dec 10, 2008 at 11:51 AM, Shailender Kanwar
<shailender.kanwar at gmail.com> wrote:
>
>
> On Wed, Dec 10, 2008 at 3:20 PM, Mathieu Malaterre
> <mathieu.malaterre at gmail.com> wrote:
>> On Wed, Dec 10, 2008 at 7:06 AM, Shailender Kanwar
>> <shailender.kanwar at gmail.com> wrote:
>>> hi all
>>>
>>> i am a newbie to vtk. I am using vtk 5.2.
>>> while compiling a QT application using vtk, i keep on getting
>>> undefined reference error for vtk classes and methods
>>>
>>> in my program iam trying only to create a QVTKWidget object
>>> but i am facing a load of undefined references
>>>
>>> i have recompiled vtk many times tweaking the build settings in cmake
>>> but to no avail
>>> i even tried using vtk 5.0.4 but the same problem comes there too
>>> i have tried on both windows and linux but the problem doesnt go away
>>
>> this is not a problem with VTK, this is a problem in your small
>> application.
>>
>>> here is a part of the error message
>>>
>>> g++ -Wl,-rpath,/usr/local/Trolltech/Qt-4.4.3/lib -o test main.o
>>> -L/usr/local/Trolltech/Qt-4.4.3/lib -L/usr/local/lib/vtk-5.2 -lQVTK
>>> -lvtkCommon -lQtGui -L/usr/local/Trolltech/Qt-4.4.3/lib
>>> -L/usr/X11R6/lib -pthread -lpng -lSM -lICE -pthread -pthread -lXi
>>> -lXrender -lXrandr -lfreetype -lfontconfig -lXext -lX11 -lQtCore -lz
>>> -lm -pthread -lgthread-2.0 -lglib-2.0 -lrt -ldl -lpthread
>>
>> You are listing: -L/usr/local/lib/vtk-5.2
>> but I do not see any vtk libs afterwards. Are you using CMake ? If not
>> you should.
>>
>> Eg.
>>
>> FIND_PACKAGE(VTK REQUIRED)
>> INCLUDE(${VTK_USE_FILE})
>>
>> ADD_EXECUTABLE(myapp main.cxx)
>> TARGET_LINK_LIBRARIES(myapp vtkRendering ... ) # you may need the vtkqt
>> lib too
>>
>> --
>> Mathieu
>>
>
>
> Actually I am using qmake I had looked at cmake but the makefiles generated
> by cmake
> seemed to be too complex so I didnt use it
> Is is necessary to use cmake for working with vtk ?
>
>
>>> g++ -Wl,-rpath,/usr/local/Trolltech/Qt-4.4.3/lib -o test main.o
>>> -L/usr/local/Trolltech/Qt-4.4.3/lib -L/usr/local/lib/vtk-5.2 -lQVTK
>>> -lvtkCommon -lQtGui -L/usr/local/Trolltech/Qt-4.4.3/lib
>>> -L/usr/X11R6/lib -pthread -lpng -lSM -lICE -pthread -pthread -lXi
>>> -lXrender -lXrandr -lfreetype -lfontconfig -lXext -lX11 -lQtCore -lz
>>> -lm -pthread -lgthread-2.0 -lglib-2.0 -lrt -ldl -lpthread
>
>
> Yes you are right
> here I have only added libQVTK as adding other vtk libs is only increasing
> the error list, each vtk library is leading to its own list of undefined
> reference errors.
> I have tried adding all the vtk libs but still the problem continues.
> Maybe my order of linking the libraries is wrong can you tell me in what
> order the libs should be linked ?

Of course ! This is the *exact* same list and order as the one
generated by cmake.


-- 
Mathieu