ROOT installation problems in ubunt 22.04

ROOT
1

Hello,

I am trying to install version 6.26.02 (after trying unsuccessfully with 6.22.06) on Ubuntu 22.04. The problem seems to be related to the XROOTD, see below

gmake[2]: *** [builtins/xrootd/CMakeFiles/XROOTD.dir/build.make:98: builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:8391: builtins/xrootd/CMakeFiles/XROOTD.dir/all] Error 2
gmake: *** [Makefile:156: all] Error 2

I have came across a couple of threads in this forum asking to first check that the libssl-dev dependency is correctly installed, for this, I get:

libssl-dev is already the newest version (3.0.2-0ubuntu1.1).

Another thread suggest to set -Dbuiltin_xrootd=OFF but the problem persisted.

I also need to add that I followed the same approach for the root version 6.22.06 and 6.24.06 and in both cases, I got the same problem each time.

Any ideas about what I could be doing wrong?
Thanks in advance

ROOT: Version:6.26.02
Platform: Ubuntu 22.04
Compiler: gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0

2

Hi @_rthur ,
this is a known issue with 6.26.02 that will be fixed in 6.26.04.

However, unless you have a very specific reason to build ROOT from source, it’s probably simpler to use the pre-compiled binaries or another of the available packages, see Installing ROOT - ROOT . In other words it is likely that you don’t have to compile ROOT from source.

Cheers,
Enrico

3

Hi Enrico,

Thanks for the quick reply and glad that this will be fixed in the new release. In the past, the only problem I had with the per-compiled binaries was that they were not build with some of the flags I needed.

However, this time I only need minuit2, pyroot for python3 and genvector. Are these built in the binaries? How can I check how they were compiled?

Thanks,
Arturo

4

Running root-config --features in a terminal shows which features a certain ROOT binary was built with. You can also quickly try things out in docker with e.g. docker run -it rootproject/root:6.26.02-ubuntu22.04.

Cheers,
Enrico

5

Great! I will give a try.

Thank you very much!
Cheers,
Arturo