compiling ExternalFastJet

[Marianna Testa]

Dear experts,
I'm trying to compile Delphes with fastjet.
In the MakeFile in examples/ExternalFastJet
I set the following directories:

FASTJET_DIR = /data02/testa/fastjet_test/fastjet-install
ROOT_DIR = /cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase/x86_64/root/6.02.12-x86_64-slc6-gcc48-opt
DELPHES_DIR = /data02/testa/Delphes/Delphes-3.3.2

I got a compilation errors (see log file) like:
/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase/x86_64/root/6.02.12-x86_64-slc6-gcc48-opt/include/Rtypes.h:37:18: error: atomic: No such file or directory

Is the ROOT version ok?

Cheers,
Marianna.

[Michele Selvaggi]

Hi Marianna,

can you try with a more recent ROOT version?
6.02 is not compatible with Delphes.

Did you succeed in compiling Delphes standalone?

Cheers,
Michele

[Michele Selvaggi]

Hi,

It is not related to the ROOT version, but to the flags used for compiling.
You have to replace in the Makefile the CXXFLAG for root like this:

​https://github.com/delphes/delphes/commit/173a9df8d9cb5704135d7a6a0df5980c9cd323eb

Please do the following:

1) Edit the Makefile as stated above
2) go to main Delphes dir (../..)
3) Type:

source /cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase/x86_64/Gcc/gcc484_x86_64_slc6/setup.sh
source /cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase/x86_64/root/6.02.12-x86_64-slc6-gcc48-opt/bin/thisroot.sh
make clean
make
cd examples/ExternalFastJet
make clean
make

Can you try this ?

Michele