ROOT: Use rootcling instead of genreflex for root dict generation

[smuzaffar]

Fixes #8983

[smuzaffar]

test parameters:

• full_cmssw = true

[smuzaffar]

please test

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_14_0_X/master.

@smuzaffar, @aandvalenzuela, @iarspider can you please review it and eventually sign? Thanks.
@antoniovilela, @rappoccio, @sextonkennedy you are the release manager for this.
cms-bot commands are listed here

[cmsbuild]

cms-bot internal usage

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5763a1/37219/summary.html
COMMIT: 515ac91
CMSSW: CMSSW_14_0_X_2024-02-05-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmsdist/8984/37219/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @RSalvatico Make default Phase2 HLT thresholds from config file the same as in Run3 cmssw#43822
• @bsunanda Run3-Sim154 Try to avoid memory leak issues in SimG4Core/PrintGeomeInfo and Geometry/TrackerCommonData cmssw#43844
• @makortel Fix NanoAOD workflow reading 12_4_X file cmssw#43828
• @bsunanda Phase2-hgx352C Fix the unit test in Configuration/Geometry cmssw#43862
• @michael-pitt extend histograms to the Run3 range in CTPPSLHCInfoPlotter cmssw#43860

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5763a1/37219/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5763a1/37219/git-merge-result

Comparison Summary

Summary:

• You potentially removed 60 lines from the logs
• Reco comparison results: 65 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3248614
• DQMHistoTests: Total failures: 1198
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3247394
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 47 files compared)
• Checked 200 log files, 161 edm output root files, 48 DQM output files
• TriggerResults: no differences found

[smuzaffar]

+externals

looks good but we will integrate it for 14.1.X

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_14_0_X/master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @sextonkennedy, @rappoccio, @antoniovilela (and backports should be raised in the release meeting by the corresponding L2)

[smuzaffar]

+externals

@makortel , any objection on this change?

[makortel]

No objections

[smuzaffar]

lets get this in for next IB