Dockerfile cannot be built with Ubuntu 23.10

[cngzhnp]

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Required Info
Camera Model	{ R200 / F200 / SR300 / ZR300 / D400 }
Firmware Version	(Open RealSense Viewer --> Click info)
Operating System & Version	{Win (8.1/10) / Linux (Ubuntu 14/16/17) / MacOS
Kernel Version (Linux Only)	(e.g. 4.14.13)
Platform	PC/Raspberry Pi/ NVIDIA Jetson / etc..
SDK Version	{ legacy / 2.. }
Language	{C/C#/labview/nodejs/opencv/pcl/python/unity }
Segment	{Robot/Smartphone/VR/AR/others }

Issue Description

When Ubuntu 23.10 base image is used to compile 2.54.2 version, there is a compilation error which could be seen below:

#0 6.140 /usr/src/librealsense/third-party/rsutils/include/rsutils/version.h:23:13: error: 'uint64_t' does not name a type
#0 6.140 23 | typedef uint64_t number_type;
#0 6.140 | ^~~~~~~~
#0 6.140 /usr/src/librealsense/third-party/rsutils/include/rsutils/version.h:7:1: note: 'uint64_t' is defined in header ''; did you forget to '#include '?

In this header file, actually uint64_t requires system header file and it is missing.

[MartyG-RealSense]

Hi @cngzhnp The most recent Ubuntu version currently supported by the librealsense SDK is 22.04.

It is possible to build librealsense from source code with CMake for non-supported Linux versions by including the flag -DFORCE_RSUSB_BACKEND=TRUE in the CMake build instruction. An RSUSB build of the SDK is not dependent on Linux versions or kernel versions and does not need the kernel to be patched.

An example of instructions for performing an RSUSB build from source code can be found at #9931 (comment)

[cngzhnp]

Hi @MartyG-RealSense, thanks for your answer.

However, I do not use anything else than Dockerfile in the scripts folder for build. Only change I did was, upgrading Ubuntu version from 20.04 to 23.10. In my opinion, with new compiler that comes from newer Ubuntu can find more problems in the codebase.

Simply, missing header file for uint64_t data type which is not included on version.h. Only this would be enough for fixing right now, I guess. If you say that, third-party library is not managed by you, please let me know. I will try to contact corresponding person.

[MartyG-RealSense]

This error has not been previously reported in relation to librealsense installation, though it has appeared in a number of non-RealSense cases. In a lot of those cases, a common factor is that GCC 13 is being used. Are you using GCC 13, please?

[cngzhnp]

Yes, I am using GCC 13.2.0 in Docker container which comes with Ubuntu Mantic by default, I guess.

[MartyG-RealSense]

I will highlight this issue to my Intel RealSense colleagues. Thanks very much for your patience!

[MartyG-RealSense]

Hi @cngzhnp Thanks very much for your patience. I had a response from my Intel RealSense colleagues (below).

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Including <cstdint> at the top of version.h should fix the error.

https://github.com/IntelRealSense/librealsense/blob/master/third-party/rsutils/include/rsutils/version.h

This is compiled within Docker.

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The advice from my colleagues adds that whilst you are using the latest software such as Ubuntu 23.10, it is best to use the versions that are currently supported by librealsense.

[cngzhnp]

Thanks for the reply @MartyG-RealSense.

Do you plan when this fix will be merged into main branch? Adding one necessary header file, does not affect on current behavior, IMHO.

[MartyG-RealSense]

I have enquired to my colleagues about your question above regarding whether the change will be added to the master branch.

[MartyG-RealSense]

Hi again @cngzhnp My Intel RealSense colleagues have informed me that the issue has been fixed and included in the development branch - please see #11917 for details.

The development branch will become the next master branch release of the SDK at a future date.

[MartyG-RealSense]

Hi @cngzhnp Do you require further assistance with this case, please? Thanks!

[cngzhnp]

Hello @MartyG-RealSense, no thanks a lot. Only one more thing, do you have any plan when it will be merged into main and when you do release a new version?

[MartyG-RealSense]

I have contacted my Intel RealSense colleagues regarding whether there is a time estimate available for the next master release. I will let you know as soon as I have a reply.

[MartyG-RealSense]

Hi @cngzhnp My colleagues have informed me that the next SDK release is currently targeted for 2024, around the end of the first quarter.

However, the RealSense development team have kindly merged the GCC 13 fix into the current 2.54.2 master branch today, as described at #12409

[MartyG-RealSense]

Hi @cngzhnp As the GCC fix has been merged ito the master branch (see the comment above), do you require further assistance with this case please? Thanks!