Problem building VPI-samples

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Hello,

I was trying to build the VPI-samples and got the following error:

/usr/bin/ld: warning: libEGL_nvidia.so.0, needed by /opt/nvidia/vpi1/lib64/libnvvpi.so.1.0.15, not found (try using -rpath or -rpath-link)
/opt/nvidia/vpi1/lib64/libnvvpi.so.1.0.15: undefined reference to `NvEglApiGetAccess’

does somebody have a suggestion how to solve it?

2

Hi,
Did you do all the following :

  • Install VPI with SDKmanager
  • On the Jetson NX, copy the CMakeLists.txt and main.cpp in one of the samples directory (/opt/nvidia/vpi1/samples/03-harris-corners for example), copy them in another directory.
  • Do cmake . and make then launch the application ./vpi_sample_03_harris_corners
3

The image I installed already contained the VPI-samples. So far I did the following:

  1. copy the samples to the home directory using the vpi_install_samples.sh
  2. executing the cmake . command in a sample folder, which returned no errors
  3. executing the make command, which spat out the error in the first post

So far I tried sample 3 and 11, which returned the same errors.

5

Hi,

Just test the compiling steps shared in this comment.
The VPI sample can be compiled without error in our environment.

Could you check if the libEGL_nvidia.so.0 exist in your platform?
We can find it under /usr/lib/aarch64-linux-gnu/tegra-egl/.

Thanks.

6

Hello,

I checked and I have the libEGL_nvidia.so.0 in the mentioned ditrectory, together with:
ld.so.conf
libGLESv1_CM_nvidia.so.1
libGLESv2_nvidia.so.2
nvidia.json

7

Hi,

Could you try to preload the library to see if it helps?

$ export LD_PRELOAD=/usr/lib/aarch64-linux-gnu/tegra-egl/libEGL_nvidia.so.0
$ ./vpi_sample_03_harris_corners ...

Thanks.

8

Hello,

thanks for the reply. I tried the command but it didn’t work, I still have the same error as in the first post. Also, I don’t have a program which I could start, as you describe in the second line.

9

Hi,

Would you mind reflashing the device and try if the issue still there?
Thanks.

10

I bet it works but I would like to know the problem and find another way. Reflashing would be the last resort.

12

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