(1) Install wouter's package

git clone https://:@gitlab.cern.ch:8443/lhcb/Alignment.git

cd Alignment

source /cvmfs/lhcb.cern.ch/lib/LbEnv

lb-set-platform x86_64-centos7-gcc7-opt

source /cvmfs/lhcb.cern.ch/lib/group_extra_settings.csh

lb-project-init

git checkout wh_alignmentupdate2018

git lb-use Rec

git lb-checkout Rec/v30r0 Tr/TrackKernel

git lb-checkout Rec/v30r0 Tr/TrackFitter

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Notice: If you cannot run "source /cvmfs/lhcb.cern.ch/lib/group_extra_settings.csh", you can try "source /cvmfs/lhcb.cern.ch/lib/group_extra_settings.sh". If your Linux system is Bourne Shell(bash), you need to use "sh"; if it is CShell(tcsh), you need to use ".csh".

(2) Install patch

scp -r jideng@lxplusNOSPAMPLEASE.cern.ch:/afs/cern.ch/user/m/mexu/public/For_Aligment/trackfitpatch.patch .

patch < trackfitpatch.patch

## input the file need to be patched, as

# > Tr/TrackFitter/src/TrackMasterFitter.cpp

# > Tr/TrackFitter/src/TrackMasterFitter.h