Build jetbot_ros fails for: /usr/bin/ld: cannot find -lnvbuf_utils

[jomoengineer]

I am attempting to go through the build and install process for jetbot_ros but it is failing at the "Build jetbot_ros" phase with the following build error:
Note:
JetBot Image Version: 0.4.3 / JetPack 4.5 4Gb

Did I perhaps miss a step?

The library file libnvbuf_utils is installed on the system though.
ls -la /usr/lib/aarch64-linux-gnu/tegra/libnvbuf_utils.so lrwxrwxrwx 1 root root 23 Jan 15 2021 /usr/lib/aarch64-linux-gnu/tegra/libnvbuf_utils.so -> libnvbuf_utils.so.1.0.0

Error seen:
`jetbot@nano-4gb-jp45:~/workspace/catkin_ws$ catkin_make
Base path: /home/jetbot/workspace/catkin_ws
Source space: /home/jetbot/workspace/catkin_ws/src
Build space: /home/jetbot/workspace/catkin_ws/build
Devel space: /home/jetbot/workspace/catkin_ws/devel
Install space: /home/jetbot/workspace/catkin_ws/install

Running command: "make cmake_check_build_system" in "/home/jetbot/workspace/catkin_ws/build"

-- Using CATKIN_DEVEL_PREFIX: /home/jetbot/workspace/catkin_ws/devel
-- Using CMAKE_PREFIX_PATH: /home/jetbot/workspace/catkin_ws/devel;/opt/ros/melodic
-- This workspace overlays: /home/jetbot/workspace/catkin_ws/devel;/opt/ros/melodic
-- Found PythonInterp: /usr/bin/python2 (found suitable version "2.7.17", minimum required is "2")
-- Using PYTHON_EXECUTABLE: /usr/bin/python2
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/jetbot/workspace/catkin_ws/build/test_results
-- Found gtest sources under '/usr/src/googletest': gtests will be built
-- Found gmock sources under '/usr/src/googletest': gmock will be built
-- Found PythonInterp: /usr/bin/python2 (found version "2.7.17")
-- Using Python nosetests: /usr/bin/nosetests-2.7
-- catkin 0.7.29
-- BUILD_SHARED_LIBS is on
-- BUILD_SHARED_LIBS is on
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- ~~ traversing 2 packages in topological order:
-- ~~ - jetbot_ros
-- ~~ - ros_deep_learning
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- +++ processing catkin package: 'jetbot_ros'
-- ==> add_subdirectory(jetbot_ros)
-- +++ processing catkin package: 'ros_deep_learning'
-- ==> add_subdirectory(ros_deep_learning)
detected ROS_DISTRO=ROS_MELODIC
detected ROS1 (catkin_make)
-- Configuring done
-- Generating done
-- Build files have been written to: /home/jetbot/workspace/catkin_ws/build

Running command: "make -j2 -l2" in "/home/jetbot/workspace/catkin_ws/build"

[ 3%] Linking CXX executable /home/jetbot/workspace/catkin_ws/devel/lib/ros_deep_learning/segnet
[ 7%] Linking CXX executable /home/jetbot/workspace/catkin_ws/devel/lib/jetbot_ros/jetbot_camera
/usr/bin/ld: cannot find -lnvbuf_utils
collect2: error: ld returned 1 exit status
jetbot_ros/CMakeFiles/jetbot_camera.dir/build.make:168: recipe for target '/home/jetbot/workspace/catkin_ws/devel/lib/jetbot_ros/jetbot_camera' failed
make[2]: *** [/home/jetbot/workspace/catkin_ws/devel/lib/jetbot_ros/jetbot_camera] Error 1
CMakeFiles/Makefile2:615: recipe for target 'jetbot_ros/CMakeFiles/jetbot_camera.dir/all' failed
make[1]: *** [jetbot_ros/CMakeFiles/jetbot_camera.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 18%] Built target segnet
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j2 -l2" failed
`

[dusty-nv]

Hi @jomoengineer, can you try adding link_directories(/usr/lib/aarch64-linux-gnu/tegra) to this line in CMakeLists.txt ?

jetbot_ros/CMakeLists.txt

Line 125 in 179bdaa

[jomoengineer]

Yep! Adding the link_directories just above the include_directories line solved the issue.

Thanks!