use -mlong-double-64 to avoid link error on ppc64le

[smuzaffar]

For ppc64le, we use -mlong-double-64 ( https://github.com/cms-sw/cmsdist/blob/IB/CMSSW_11_1_X/master/gcc-toolfile.spec#L191 ) to compile cmssw. fftjet also uses long double but with 128 bits. That causes link error for ppc64le IBs [a]

By default fftjey is build in debug mode (-g -O2), we explicitly set CXXFLAGS to -O2 to avoid debug build.

[a]

ld: RecoJets/FFTJetAlgorithms/src/EtaDependentPileup.cc.o uses 64-bit long double, libfftjet.a(libfftjet_la-LinearInterpolator2d.o) uses 128-bit long double
ld: failed to merge target specific data of file libfftjet.a(libfftjet_la-LinearInterpolator2d.o)

[smuzaffar]

please test for slc7_ppc64_gcc820

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_11_1_X/master.

@cmsbuild, @smuzaffar, @mrodozov can you please review it and eventually sign? Thanks.
cms-bot commands are listed here

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

-1
Tested at: UNKNOWN
I was not able to find a release to test this PR. See the Jenkins logs for more details.

[smuzaffar]

please test for slc7_ppc64le_gcc820

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/3754/console Started: 2019/12/03 15:37

[cmsbuild]

+1
Tested at: 0f06d2a
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c72f1c/3754/summary.html

[cmsbuild]

Comparison job queued.

[smuzaffar]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/3764/console Started: 2019/12/03 17:47

[cmsbuild]

+1
Tested at: 0f06d2a
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c72f1c/3764/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c72f1c/3764/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 2793840
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2793498
• DQMHistoTests: Total skipped: 341
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 147 log files, 16 edm output root files, 34 DQM output files

[smuzaffar]

+externals

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_11_1_X/master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @davidlange6, @slava77, @smuzaffar, @fabiocos (and backports should be raised in the release meeting by the corresponding L2)