oshadura/cmssw_cheatsheet.md

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Created October 10, 2019 15:22

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CMSSW Cheatsheet

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cmssw_cheatsheet.md

Running CMSSW with custom ROOT build

Source what's needed:

ssh lxplus
bash
source /cvmfs/sft-nightlies.cern.ch/lcg/views/dev3/latest/x86_64-centos7-gcc8-opt/setup.sh
source /cvmfs/cms.cern.ch/slc7_amd64_gcc700/external/cmake/3.14.5/etc/profile.d/init.sh

cd /tmp/`whoami`

source /cvmfs/cms.cern.ch/cmsset_default.sh

scram project CMSSW_11_0_ROOT6_X_2019-08-28-2300 

cd CMSSW_11_0_ROOT6_X_2019-08-28-2300

NEW_ROOT=/path/to/new/root

sed -i -e "s|$(scram tool tag root_interface ROOT_INTERFACE_BASE)|${NEW_ROOT}|" config/toolbox/*/tools/selected/*.xml

scram setup

eval `scram runtime -sh`

ls -l $(which root)

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