I have written a set of instructions to install librealsense and pyrealsense2 on the Jetson NX

[lieuzhenghong]

There seems to be quite a lot of interest (and difficulty) in installing pyrealsense2 on the Jetson: see issues #6964, #6820, #6980 and others.

I think this is because the documentation is not as clear as it could be.

Firstly, it should be clearly signposted that we need to build librealsense from source because the PyPi pip packages are not compatible with Arm processors.

Secondly, one needs to refer to both READMEs and piece them together to get a full understanding of the install process:

README1 in /blob/master/doc README2 inside wrappers/python

Neither of the READMEs give a full set of instructions to follow; each of them is missing some piece. Hence, I have come up with a list of instructions that works on my Jetson NX.

# Installs librealsense and pyrealsense2 on the Jetson NX running Ubuntu 18.04
# and using Python 3
# Tested on a Jetson NX running Ubuntu 18.04 and Python 3.6.9 on 2020-11-04

sudo apt-get update && sudo apt-get -y upgrade
sudo apt-get install -y --no-install-recommends \
    python3 \
    python3-setuptools \
    python3-pip \
    python3-dev

# Install the core packages required to build librealsense libs
sudo apt-get install -y git libssl-dev libusb-1.0-0-dev pkg-config libgtk-3-dev
# Install Distribution-specific packages for Ubuntu 18
sudo apt-get install -y libglfw3-dev libgl1-mesa-dev libglu1-mesa-dev

# Install LibRealSense from source
# We need to build from source because
# the PyPi pip packages are not compatible with Arm processors.
# See link [here](https://github.com/IntelRealSense/librealsense/issues/6964).

# First clone the repository
git clone https://github.com/IntelRealSense/librealsense.git
cd ./librealsense

# Make sure that your RealSense cameras are disconnected at this point
# Run the Intel Realsense permissions script
./scripts/setup_udev_rules.sh

# Now the build
mkdir build && cd build
## Install CMake with Python bindings (that's what the -DBUILD flag is for)
## see link: https://github.com/IntelRealSense/librealsense/tree/master/wrappers/python#building-from-source
cmake ../ -DBUILD_PYTHON_BINDINGS:bool=true
## Recompile and install librealsense binaries
## This is gonna take a while! The -j4 flag means to use 4 cores in parallel
## but you can remove it and simply run `sudo make` instead, which will take longer
sudo make uninstall && sudo make clean && sudo make -j4 && sudo make install

## Export pyrealsense2 to your PYTHONPATH so `import pyrealsense2` works
export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python3.6/pyrealsense2

If this is useful/correct, I would like it to be put in a section of the README.md to save other developers' time. Feel free to close if irrelevant. Thank you.

[dorodnic]

Hi @lieuzhenghong Thank you for the contribution. Feel free to submit pull-request on GitHub or one of the admins can merge it manually.

[MartyG-RealSense]

Thanks very much @dorodnic - I will also track this case over time and keep it open until a PR is processed or it is added as documentation.

[MartyG-RealSense]

Hi @surefyyq Could you create a new question for your problem please by visiting the link below and clicking on the New Issue button. Thanks!

https://github.com/IntelRealSense/librealsense/issues

[ytfksw]

@lieuzhenghong I have encountered the same problem. The documentation needs to be updated. When will this be merged?

[MartyG-RealSense]

Hi @ytfksw There is not a time estimate that can be provided for the updating of documentation. Cases tagged as documentation are kept open in the meantime so that they can be tracked.

[lamngoctam]

Hi @lieuzhenghong , I have tried to follow your all steps. I also tested the example with opencv_viewer_example.py However the issue is still there

:~/catkin_ws/src/testing$ python3 opencv_viewer_example.py 
Traceback (most recent call last):
  File "opencv_viewer_example.py", line 8, in <module>
    import pyrealsense2 as rs
ModuleNotFoundError: No module named 'pyrealsense2'

And the build folder from librealsense

~/librealsense/build$ ls
CMakeCache.txt         examples                 realsense2ConfigVersion.cmake
CMakeFiles             install_manifest.txt     src
cmake_install.cmake    librealsense2.so         third-party
cmake_uninstall.cmake  librealsense2.so.2.41    tools
common                 librealsense2.so.2.41.0  udev-rules.h
compile_commands.json  Makefile                 wrappers
config                 realsense2Config.cmake

Would you have any advice1

[MartyG-RealSense]

Hi @lamngoctam The guide in case 6964 has been the most consistently successful for installing librealsense and the Python wrapper together on Jetson using CMake.

https://github.com/IntelRealSense/librealsense/issues/7905#issuecomment-737544294

[kithib]

hi,when i use this commend sudo apt-get install -y libglfw3-dev libgl1-mesa-dev libglu1-mesa-dev and it telled me that it can't install libglfw3-dev ,how could i do with this.thanks

[MartyG-RealSense]

Hi @kithib Have you inputted the command below first, please:

sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade

[kithib]

HI @MartyG-RealSense Thanks for your help. I just followed you ,but it still occured!

`(base) nvidia@nvidia-desktop:~/librealsense/build$ sudo apt-get install -y libglfw3-dev libgl1-mesa-dev libglu1-mesa-dev Reading package lists... Done Building dependency tree
Reading state information... Done Package libglfw3-dev is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package 'libglfw3-dev' has no installation candidate `

[MartyG-RealSense]

Hi @kithib As you refer to nvidia@nvidia-desktop, are you using Nvidia Jetson as your computing device like @lieuzhenghong was in their instruction guide above, please?

Which Ubuntu version are you using? My understanding is that Ubuntu 18.04 is the most recent version supported by Nvidia JetPack at the time of writing this, so if you are using a newer Ubuntu such as 20.04 (Focal) then this may be causing you problems. An Nvidia support forum moderator reports in the link below that JetPack will add 20.04 support in JetPack 5 (it is currently at version 4.6.1).

https://forums.developer.nvidia.com/t/jetpack-ubuntu-20-04/203197

https://forums.developer.nvidia.com/t/jetson-software-roadmap-for-2h-2021-and-2022/177724

[kithib]

HI @MartyG-RealSense Thanks for your help.I use jetson NX . I solved last problems by downloading in ubuntu webset! When I run cmake ../ -DBUILD_PYTHON_BINDINGS:bool=true Is that my git problems? -- Checking internet connection... -- Failed to identify Internet connection CMake Warning at CMakeLists.txt:15 (message): No internet connection, disabling BUILD_WITH_TM2

CMake Warning at CMakeLists.txt:21 (message): No internet connection, disabling IMPORT_DEPTH_CAM_FW

-- Info: REALSENSE_VERSION_STRING=2.50.0 -- Setting Unix configurations -- Building libcurl enabled -- using RS2_USE_LIBUVC_BACKEND -- LIVE555: File exists, delete it to download the latest version (/home/nvidia/librealsense/third-party/live555/live555-latest.tar.gz) -- LIVE555: Unpacking source -- LIVE555: Source unpacked CMake Warning at wrappers/CMakeLists.txt:10 (message): No internet connection. Cloning Python bindings may fail

-- Configuring done -- Generating done -- Build files have been written to: /home/nvidia/librealsense/build/external-projects/pybind11 [ 12%] Performing download step (git clone) for 'pybind11' Cloning into 'pybind11'... fatal: unable to access 'https://github.com/pybind/pybind11.git/': Could not resolve host: github.com Cloning into 'pybind11'... fatal: unable to access 'https://github.com/pybind/pybind11.git/': Could not resolve host: github.com Cloning into 'pybind11'... fatal: unable to access 'https://github.com/pybind/pybind11.git/': Could not resolve host: github.com -- Had to git clone more than once: 3 times. CMake Error at /home/nvidia/librealsense/build/external-projects/pybind11/tmp/pybind11-gitclone.cmake:66 (message): Failed to clone repository: 'https://github.com/pybind/pybind11.git'

CMakeFiles/pybind11.dir/build.make:89: recipe for target 'src/pybind11-stamp/pybind11-download' failed make[2]: [src/pybind11-stamp/pybind11-download] Error 1 CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/pybind11.dir/all' failed make[1]: [CMakeFiles/pybind11.dir/all] Error 2 Makefile:83: recipe for target 'all' failed make: *** [all] Error 2 CMake Error at wrappers/python/CMakeLists.txt:22 (add_subdirectory): add_subdirectory given source "/home/nvidia/librealsense/build/third-party/pybind11" which is not an existing directory.

CMake Error at wrappers/python/CMakeLists.txt:53 (pybind11_add_module): Unknown CMake command "pybind11_add_module".

-- Configuring incomplete, errors occurred! See also "/home/nvidia/librealsense/build/CMakeFiles/CMakeOutput.log".

[MartyG-RealSense]

Hi @kithib Does it make a difference if you add -DBUILD_WITH_TM2=false to your CMake build instruction to stop the build process from trying to access an internet connection?

cmake ../ -DBUILD_PYTHON_BINDINGS:bool=true -DBUILD_WITH_TM2=false