unable to link: cannot find libvtkproj4

Status changed to 'Confirmed' because the bug affects multiple users.

While not a solution to the bug, as a stopgap you can remove the attempt to link to vtkproj4 from your project by removing it from the libraries you are linking too.

in your cmakelists.txt you can add

list(REMOVE_ITEM PCL_LIBRARIES "vtkproj4")

if you are using PCL, or presumably if you are using VTK directly you could add

list(REMOVE_ITEM VTK_LIBRARIES "vtkproj4")

this has allowed me to build simple PCL tutorials etc and presumably would also work with larger projects.

indeed, that's the solution we decided on:

https://github.com/ros-perception/perception_pcl/pull/121/files

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819741#19

This should be fixed in Yakkety. Can we propose this for Xenial?

I confirmed that my Yakkety build is fine.

This is also affecting the pcl_perception ROS guys in kinetic.

Please propose an SRU for Xenial.

So can someone with appropriate rights please propose an SRU for xenial?

Here's a patch that fixes this issue in Xenial

Here's a better, less risky patch for vtk6. It requires a no-change rebuild of pcl though in order to properly work.

Here's the patch required for pcl (no-change rebuild). It must happen only after vtk6 has been built with the above patch.

So the vtk6 change adds a new dependency, which makes pcl build with the system libproj. While switching pcl to the system libproj may be considered a significant change, nothing much actually uses pcl. The only reverse depends is ros-perception, which is the software this bug is attempting to fix in the first place, so I believe changing this is fine.

ACK on the debdiffs. I've uploaded vtk6 for processing by the SRU team.

Once it has been released, we can do the pcl no-change rebuild.

My vtk6 upload changes the version string to 6.2.0+dfsg1-10ubuntu0.1 which is more appropriate.

Thank you, Marc!

Hello Jackie, or anyone else affected,

Accepted vtk6 into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/vtk6/6.2.0+dfsg1-10ubuntu0.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-xenial to verification-done-xenial. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-xenial. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Since vtk6 is finished building in -proposed, I have now uploaded the pcl package which needs a no-change rebuild against vtk6. Please accept it into -proposed as well. Thanks!

Hello Jackie, or anyone else affected,

Accepted pcl into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/pcl/1.7.2-14build1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-xenial to verification-done-xenial. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-xenial. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

The new build for Xenial would probably fix bug #1704459 as well.

Tested this using both the basic test case above using https://github.com/kyrofa/pcl-sru-test as well as the much-more-involved https://github.com/ros-perception/perception_pcl .

Using version 6.2.0+dfsg1-10build1 of libvtk6-dev and version 1.7.2-14build1 of libpcl-dev, both the basic test case as well as perception_pcl fail attempting to link to the system libproj. The error from the latter looks like:

    $ make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libproj.so', needed by '/home/ubuntu/ws/devel_isolated/pcl_ros/lib/libpcl_ros_surface.so'. Stop.

When I install version 6.2.0+dfsg1-10ubuntu0.1 of libvtk6-dev and version 1.7.2-14build1.1 of libpcl-dev from xenial-proposed, libvtk6-dev also installs libproj-dev and both projects successfully link and build. Marking verification done.

Note that armhf is not building. It already wasn't in the Xenial archive actually due to this bug, but now that this bug is fixed it still isn't building due to this Debian bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798408 . I'll SRU a fix for that separately.

This bug was fixed in the package pcl - 1.7.2-14build1.1

---------------
pcl (1.7.2-14build1.1) xenial; urgency=medium

  * No-change rebuild to properly link to vtk6 and libproj (LP: #1573234)

 -- Kyle Fazzari <email address hidden> Tue, 17 Nov 2020 19:40:15 -0800

This bug was fixed in the package vtk6 - 6.2.0+dfsg1-10ubuntu0.1

---------------
vtk6 (6.2.0+dfsg1-10ubuntu0.1) xenial; urgency=medium

  * Add libproj-dev as a dependency (LP: #1573234)

 -- Kyle Fazzari <email address hidden> Tue, 17 Nov 2020 19:30:16 -0800

The verification of the Stable Release Update for pcl has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.