[ros-users] Linking problems with pcl

[Lorenz Mösenlechner]

Hi Sabrina,

can you try a 'make clean' in pcl and then remake it? Maybe something
went wrong while building the pcl library you are linking against.

Lorenz

> Hi Lorenz, hi Radu,
> 
> thank you for your answers.
> 
> I am using revision 32800 of the point_cloud_perception stack, which  
> we checked out yesterday after the new release.
> 
> I even tried a very minimalistic example, which now is similar to the  
> example in test/test_io.cpp
> void cloudCallback(const sensor_msgs::PointCloud2ConstPtr& cloud)
> {
> 	sensor_msgs::PointCloud2 cloud_test;
> 	Eigen3::MatrixXf points;
> 	pcl::getPointCloudAsEigen (cloud_test, points);
> }
> 
> But even here I get the mentioned linking error.
> 
> As a workaround I copied the function getPointCloudAsEigen into my own  
> source file, which seems to work fine.
> 
> Regards,
> Sabrina
> 
> Zitat von Radu Bogdan Rusu <rusu at willowgarage.com>:
> 
> > Sabrina, you can look at test/test_io.cpp in PCL for an example on  
> > how getPointCloudAsEigen is used, in case you haven't
> > figured out what the error was.
> >
> > Cheers,
> > Radu.
> >
> >
> > On 09/21/2010 06:48 AM, sabrinakliegl at innok.de wrote:
> >> Hi everybody,
> >>
> >> I get this error:
> >> CMakeFiles/geometry_based_obstacle_detector.dir/src/geometry_based_obstacle_detector.o: In function `cloudCallback(boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void>  >   
> >> const>
> >> const&)':
> >> /home/skliegl/GETbot/svn/ros/pcl_tools/src/geometry_based_obstacle_detector.cpp:19: undefined reference to `pcl::getPointCloudAsEigen(sensor_msgs::PointCloud2_<std::allocator<void>  >  const&, Eigen3::Matrix<float, -1, -1, 0,  
> >> -1,
> >> -1>&)'
> >>
> >> The mentioned function is:
> >> void cloudCallback(const sensor_msgs::PointCloud2ConstPtr&  cloud)
> >> {
> >> 	Eigen3::MatrixXf points;
> >> 	pcl::getPointCloudAsEigen (*cloud, points);
> >>
> >> }
> >>
> >> The corresponding part of the CMakeLists.txt:
> >> rosbuild_add_executable( geometry_based_obstacle_detector
> >> src/geometry_based_obstacle_detector.cpp)
> >> target_link_libraries(geometry_based_obstacle_detector pcl_io)
> >>
> >> Any ideas?
> >>
> >> Thank you,
> >> Sabrina
> >>
> >>
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> 
> 
> 
> 
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-- 
Lorenz Mösenlechner            | moesenle at in.tum.de
Technische Universität München | Boltzmannstr. 3
85748 Garching bei München     | Germany
http://ias.cs.tum.edu/         | Tel: +49 (89) 289-26910