Unable to build the project

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX
1

Dear Experts,
I tried to build my project.
I got below error.
/usr/bin/ld: cannot find -lnvbuf_utils
collect2: error: ld returned 1 exit status
CMakeFiles/visionFV0.dir/build.make:168: recipe for target ‘visionFV0’ failed
make[2]: *** [visionFV0] Error 1
CMakeFiles/Makefile2:67: recipe for target ‘CMakeFiles/visionFV0.dir/all’ failed
make[1]: *** [CMakeFiles/visionFV0.dir/all] Error 2
Makefile:83: recipe for target ‘all’ failed
make: *** [all] Error 2

3

Hi,

Please check if below comment:

Thanks.

4

My jetpack version: 4.6.1-b110
I have added link_directories(/usr/lib/aarch64-linux-gnu/tegra). But I have got the same error.

5

Hi,

Could you check if the library is presented in your environment?

$ ll /usr/lib/aarch64-linux-gnu/tegra/libnvbuf_utils.so*
lrwxrwxrwx 1 root root    23 Nov 22  2022 /usr/lib/aarch64-linux-gnu/tegra/libnvbuf_utils.so -> libnvbuf_utils.so.1.0.0
-rw-r--r-- 1 root root 49240 Nov 22  2022 /usr/lib/aarch64-linux-gnu/tegra/libnvbuf_utils.so.1.0.0

Thanks.

6

I have checked the file. It is there in /usr/lib/aarch64-linux-gnu/tegra/

Thanks
Jaganathan

7

Hi @jaganathan.comm, can you paste your CMakeLists.txt here?

From your post history, are you trying to compile an application that uses jetson-inference/jetson-utils? Here is an example CMakeLists of doing that for an out-of-tree project:

9

Hi Dustin,
Here is my CMakeList.txt

cmake_minimum_required(VERSION 3.2)
#Project Name
project(testProject)

#Packages adding
#OpenCV Package
#Real Sense Package
#CUDA package
#JETSON UTILS
#JETSON INFERENCE
find_package(Threads REQUIRED)
find_package(OpenCV REQUIRED)
find_package(realsense2 REQUIRED)
find_package(CUDA REQUIRED)
find_package(jetson-utils REQUIRED)
find_package(jetson-inference REQUIRED)

set(DEPENDENCIES realsense2 ${OpenCV_LIBS})

set(visionF_VERSION 1.0.0)

add_definitions(-std=c++14)
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

string(TIMESTAMP TODAY “%Y-%m-%d”)

message(STATUS: “Today Date is ${TODAY}”)

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)

include_directories(/usr/lib/aarch64-linux-gnu/tegra)
link_directories(/usr/lib/aarch64-linux-gnu/)

cuda_add_executable(visionFV0 testMain.cpp )

#include_directories(/usr/include

target_link_libraries(visionFV0 ${OpenCV_LIBS} ${realsense2_LIBRARY} jetson-inference jetson-utils )

target_link_libraries(visionFV0 pthread)

10

@jaganathan.comm can you try changing this to link_directories(/usr/lib/aarch64-linux-gnu/tegra)

11

Yeah. It’s working now.

Thanks

12

The problem was…
Early i have added link_directories(/usr/lib/aarch64-linux-gnu/tegra) after cuda_add_executables(visionF0 testMain.cpp)

Because of that i got the error.

13

Gotcha, yes - CMake requires the link_directories to be added before the executables/libraries are added. Glad you got it working! 👍

14

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