[BuildRuiel] Do not drop optimization flags for header checks

[smuzaffar]

GCC seems to work with optimization flags for header checks

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_11_3_X/master.

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

[smuzaffar]

test parameters:

• full_cmssw = true

[smuzaffar]

please test

[cmsbuild]

The tests are being triggered in jenkins.
Test Parameters:

• BUILD_FULL_CMSSW = true
• CMSSW_11_3_X_2020-11-26-2300/slc7_amd64_gcc900: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/11098/console Started: 2020/11/27 11:19

[cmsbuild]

-1

Tested at: 3ab0f2f

CMSSW: CMSSW_11_3_X_2020-11-26-2300
SCRAM_ARCH: slc7_amd64_gcc900
You can see the results of the tests here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-06c8e8/11098/summary.html

I found follow errors while testing this PR

Failed tests: RelVals

• RelVals:

When I ran the RelVals I found an error in the following workflows:
11624.911 step1

runTheMatrix-results/11624.911_TTbar_13+2021_DD4hep+TTbar_13TeV_TuneCUETP8M1_GenSim+Digi+Reco+HARVEST+ALCA/step1_TTbar_13+2021_DD4hep+TTbar_13TeV_TuneCUETP8M1_GenSim+Digi+Reco+HARVEST+ALCA.log

[cmsbuild]

Comparison not run due to runTheMatrix errors (RelVals and Igprof tests were also skipped)