Delphes 3.0.12 installation

[George Wojcik]

Hi,

I'm attempting to install Delphes, but whenever I use the make command, I get the following response:

Building libDelphes.so
Building lhco2root
Building stdhep2pileup
Building root2lhco

/usr/bin/ld: cannot find -lpythia8
collect2: ld returned 1 exit status
make: * [libDelphes.so] Error1
make: * Waiting for unfinished jobs....
/usr/bin/ld: cannot find -lpythia8
collect2: ld returned 1 exit status
make: * [lhco2root] Error 1
/usr/bin/ld: cannot find -lpythia8
collect2: ld returned 1 exit status
make: * [stdhep2pileup] Error 1
/usr/bin/ld: cannot find -lpythia8
collect2: ld returned 1 exit status
make: * [root2lhco] Error

I currently have Pythia version 8.185 installed.
I'm quite certain that I'm missing some crucial element in this installation process; I'd really appreciate any help at all.

Thank you,
George

[Pavel Demin]

Hi George,

Delphes' Makefile looks for the Pythia8 libraries at the following location:

$(PYTHIA8DATA)/../lib

Apparently, it's not an optimal solution.

As a workaround, you can just unset the PYTHIA8 environment variable before compiling Delphes:

unset PYTHIA8
make

This won't affect the normal Delphes' functionality.

Regards,

Pavel