Building ROOT in the context of CMSSW
wget https://raw.githubusercontent.com/cms-sw/cms-bot/master/config.map
eval `grep CMSSW_11_0_ROOT6_X config.map | grep -v DISABLED`
PKGTOOLS_TAG=V00-32-XX
CMSDIST_TAG=IB/CMSSW_11_0_X/gcc700
ARCH=slc7_amd64_gcc820
git clone -b $CMSDIST_TAG https://github.com/cms-sw/cmsdist
git clone -b $PKGTOOLS_TAG https://github.com/cms-sw/pkgtools