Can't find libopencv_core3.so.3.2

[void-robotics]

Hello,

I performed an update using the Ubuntu 16.04 package manager but now I get the following error when trying to start my o3d303 camera:

/home/bloom/catkin_ws/devel/lib/o3d3xx/o3d3xx_node: error while loading shared libraries: libopencv_core3.so.3.2: cannot open shared object file: No such file or directory

If I look into /opt/ros/kinetic/lib, i see libopencv_core3.so, libopencv_core3.so.3.3, and libopencv_core3.so.3.3.1, but not what I need.

How do I fix this?

[tpanzarella]

Rebuild libo3d3xx and o3d3xx-ros so they link to your newly updated libraries.

[void-robotics]

thanks; in trying to re-make libo3d3xx, i get the following error

/home/bloom/catkin_ws/src/libo3d3xx/modules/image/test/o3d3xx-image-tests.cpp:242: Failure
Value of: imgs_eq(cimg, cimg2)
  Actual: true
Expected: false
/home/bloom/catkin_ws/src/libo3d3xx/modules/image/test/o3d3xx-image-tests.cpp:247: Failure
Value of: imgs_eq(cimg, cimg2)
  Actual: true
Expected: false
[  FAILED  ] ImageBuffers_Tests.ConfidenceImage (400 ms)
[ RUN      ] ImageBuffers_Tests.Bytes
[       OK ] ImageBuffers_Tests.Bytes (402 ms)
[ RUN      ] ImageBuffers_Tests.CopyConstructor
[       OK ] ImageBuffers_Tests.CopyConstructor (996 ms)
[ RUN      ] ImageBuffers_Tests.CopyAssignmentOperator
[       OK ] ImageBuffers_Tests.CopyAssignmentOperator (999 ms)
[ RUN      ] ImageBuffers_Tests.Extrinsics
[       OK ] ImageBuffers_Tests.Extrinsics (4394 ms)
[ RUN      ] ImageBuffers_Tests.UnitVectorAccess
[       OK ] ImageBuffers_Tests.UnitVectorAccess (391 ms)
[ RUN      ] ImageBuffers_Tests.ComputeCartesian
[       OK ] ImageBuffers_Tests.ComputeCartesian (358 ms)
[----------] 12 tests from ImageBuffers_Tests (9863 ms total)

[----------] Global test environment tear-down
[==========] 12 tests from 1 test case ran. (9864 ms total)
[  PASSED  ] 11 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] ImageBuffers_Tests.ConfidenceImage

 1 FAILED TEST
  YOU HAVE 2 DISABLED TESTS

I'm pretty sure my camera is connected (because running o3d3xx-dump works) and all dependencies are installed correctly. How do I fix this error?

[void-robotics]

Temporarily, I re-made both packages by commenting out the tests (I also made sure to re-make the executable by deleting catkin_ws/build and catkin_ws/devel, which is where the node is being called), but I still get the same error.

[void-robotics]

also, please see this thread for additional help: ros/ros-overlay#104 (comment)

[void-robotics]

A local engineer from ROS helped me fix this issue. Basically, my camera was pulling the .so from /usr/lib; so I thought deleting the devel and build folders and redoing catkin_make would fix it, but what I forgot was that I manually copied files over to /usr/lib because the build tests were failing; so basically deleting those files and redoing catkin_make worked. Also, I didn't know that debian packages can be installed with dpkg, which also helped. The problem is that this repo's README says the make command installs it; but I believe we installed the debian package manually, although I could be getting confused.

Anyways it's working now; thanks.

Now, the appropriate libopencv file is being linked to my executable.