Dear Jordi,

Thanks for the heads up. You're right, since the tutorial got created, the structure of the library modified a bit, and 
pcl_filters is now needed. Can you please modify the tutorial wiki pages to reflect these changes?

PS. The tutorials are already existing in pcl/src/samples in case you don't want to copy & paste the code again ;)

Cheers,
Radu.

On 06/10/2010 03:33 AM, Jordi Pages wrote:
> In fact there was a mistake in the tutorial. There is actually a missing
> dependency:
>
> target_link_libraries (tutorial_filter_voxel_grid pcl_io *pcl_filters*)
>
> Regards
>
>
> On Thu, Jun 10, 2010 at 9:34 AM, Jordi Pages
> <jordi.pages@pal-robotics.com <mailto:jordi.pages@pal-robotics.com>> wrote:
>
>     Hi,
>
>     I have some trouble trying to compile the latest svn version of PCL.
>
>     I installed ROS latest from SVN in Ubuntu and then I was following
>     the tutorial Downsampling a PointCloud using a VoxelGrid filter.
>     <http://www.ros.org/wiki/pcl/Tutorials/Downsampling%20a%20PointCloud%20using%20a%20VoxelGrid%20filter>
>     After adding the required lines in the pcl/CMakeLists.txt file in
>     order to compile the example src/examples/filter_voxel_grid.cpp and
>     launching make I obtained the following linking error:
>
>     Linking CXX executable ../bin/tutorial_filter_voxel_grid
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `Filter':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:401:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:401:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `VoxelGrid':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/voxel_grid.h:579:
>     undefined reference to `vtable for
>     pcl::VoxelGrid<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/voxel_grid.h:579:
>     undefined reference to `vtable for
>     pcl::VoxelGrid<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `main':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/src/examples/filter_voxel_grid.cpp:65:
>     undefined reference to
>     `pcl::PCLBase<sensor_msgs::PointCloud2_<std::allocator<void> >
>      >::setInputCloud(boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&)'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/src/examples/filter_voxel_grid.cpp:67:
>     undefined reference to
>     `pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> >
>      >::filter(sensor_msgs::PointCloud2_<std::allocator<void> >&)'
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `~VoxelGrid':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/voxel_grid.h:571:
>     undefined reference to `vtable for
>     pcl::VoxelGrid<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/voxel_grid.h:571:
>     undefined reference to `vtable for
>     pcl::VoxelGrid<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `~Filter':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:405:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:405:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:405:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:405:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `~VoxelGrid':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/voxel_grid.h:571:
>     undefined reference to `vtable for
>     pcl::VoxelGrid<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/voxel_grid.h:571:
>     undefined reference to `vtable for
>     pcl::VoxelGrid<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     CMakeFiles/tutorial_filter_voxel_grid.dir/src/examples/filter_voxel_grid.o:
>     In function `~Filter':
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:405:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     /home/jordi/ros/stacks/point_cloud_perception/pcl/include/pcl/filters/filter.h:405:
>     undefined reference to `vtable for
>     pcl::Filter<sensor_msgs::PointCloud2_<std::allocator<void> > >'
>     collect2: ld returned 1 exit status
>     make[3]: *** [../bin/tutorial_filter_voxel_grid] Error 1
>     make[3]: Leaving directory
>     `/home/jordi/ros/stacks/point_cloud_perception/pcl/build'
>     make[2]: *** [CMakeFiles/tutorial_filter_voxel_grid.dir/all] Error 2
>     make[2]: Leaving directory
>     `/home/jordi/ros/stacks/point_cloud_perception/pcl/build'
>     make[1]: *** [all] Error 2
>     make[1]: Leaving directory
>     `/home/jordi/ros/stacks/point_cloud_perception/pcl/build'
>     make: *** [all] Error 2
>
>     Is there any dependency missing?
>
>     Thanks in advance
>
>     --
>     Jordi Pages, PhD
>     Researcher
>     Pal Robotics S.L.
>
>     Tel: +34.93.414.53.47
>     Fax: +34.93.209.11.09
>     C/ Pujades 77-79 4º 4ª 08005 Barcelona, Spain.
>     http://www.pal-robotics.com/
>
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> --
> Jordi Pages, PhD
> Researcher
> Pal Robotics S.L.
>
> Tel: +34.93.414.53.47
> Fax: +34.93.209.11.09
> C/ Pujades 77-79 4º 4ª 08005 Barcelona, Spain.
> http://www.pal-robotics.com/
>
> AVISO DE CONFIDENCIALIDAD: Este mensaje y sus documentos adjuntos,
> pueden contener información privilegiada y/o confidencial que está
> dirigida exclusivamente a su destinatario.
> Si usted recibe este mensaje y no es el destinatario indicado, o el
> empleado encargado de su entrega a dicha persona, por favor, notifíquelo
> inmediatamente y remita el mensaje original a la dirección
> de correo electrónico indicada. Cualquier copia, uso o distribución no
> autorizados de esta comunicación queda estrictamente prohibida.
>
> CONFIDENTIALITY NOTICE: This e-mail and the accompanying document(s) may
> contain confidential information which is privileged and intended only
> for the individual or entity to whom they are addressed.  If you are not
> the intended recipient, you are hereby notified that any disclosure,
> copying, distribution or use of this e-mail and/or accompanying
> document(s) is strictly prohibited.  If you have received this e-mail in
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