Issues with headers when compiling example application

Getting Started
1

Hello,
I am trying to run some examples (for instance B4), but when compiling it it fails giving as error:

/home/fnardi/sim/basic/B4/B4a/exampleB4a.cc:33:10: fatal error: G4RunManagerFactory.hh: No such file or directory
   33 | #include "G4RunManagerFactory.hh"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

I’ve looked a bit into it, and the library should be in my Geant4 version (11.0).
To compile it I source both GCC (9.3) and Geant4 from /cvmfs/, which worked fine in the machine I was using before migrating to a different one (same OS: centOS7).
Do you have any suggestion on how to fix this?
Thank you!

Federico

2

It’s probably that the found Geant4 install is pre 11.0, see for example Problem in detecting header files of geant4 in the simulation - #2 by bmorgan. What commands did you use to set things up from cvmfs?

3

Yeah that’s the only post I’ve found about it, but I think my version is >=10.7.
What I do is basically:

source /cvmfs/sft.cern.ch/lcg/contrib/gcc/9.3.0/x86_64-centos7-gcc9-opt/setup.sh

source /cvmfs/geant4.cern.ch/geant4/11.0/x86_64-centos7-gcc9-optdeb-MT/CMake-setup.sh

export CXX=`which g++` 
export CC=`which gcc`

# QT plugin path needs to be specified
export QT_PLUGIN_PATH=/usr/lib64/qt5/plugins/

I feel I might need to specify the library folder when running cmake, but I have little idea of how :pensive:

4

The Geant4 install that’s found by CMake can be checked via searching for the Geant4_DIR variable in the CMakeCache.txt file in your build directory. In general, the setup scripts should set either CMAKE_PREFIX_PATH or Geant4_DIR appropriately.

In CVMFS, I’d recommend using the LCG “views” under /cvmfs/sft.cern.ch/lcg/views as these provide a better integration of a full toolset. There’s a full lists here: https://lcginfo.cern.ch, though requires a CERN login. Generally, the latest releases, e.g. LCG_102 will have the latest Geant4 installed, though with some delays depending on LCG/SFT’s release schedule.

1 Like
5

Setting manually the Geant4_DIR when running cmake fixed the issue, it was pointing to scraps of an old G4 installation (indeed, 10.6).
Now I have some other packages missing, so I’ll try to use a LCG view instead.
Thank you so much!

6

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.