Hi Everyone!
I tried to run a code but got this problem:
[ 4%] Building CXX object CMakeFiles/emphaticSim.dir/emphaticSim.cc.o
/emph/app/ydeniz/local/GCC-8.2.0/bin/g++ -DG4ANALYSIS_USE_ROOT -DG4INTY_USE_XT -DG4LIB_BUILD_DLL -DG4UI_USE_TCSH -DG4VIS_USE_OPENGL -DG4VIS_USE_OPENGLX -I/emph/app/ydeniz/EMPHATIC/DetectorSim/EMPHATICSim/include -I/emph/app/ydeniz/EMPHATIC/DetectorSim/EMPHATICSim/include/Materials -I/emph/app/ydeniz/EMPHATIC/DetectorSim/EMPHATICSim/include/Detectors -isystem /emph/app/ydeniz/GEANT4/geant4.10.6/geant4.10.06-install/include/Geant4 -W -Wall -pedantic -Wno-non-virtual-dtor -Wno-long-long -Wwrite-strings -Wpointer-arith -Woverloaded-virtual -Wno-variadic-macros -Wshadow -pipe -std=c++11 -O3 -DNDEBUG -fno-trapping-math -ftree-vectorize -fno-math-errno -O3 -DNDEBUG -o CMakeFiles/emphaticSim.dir/emphaticSim.cc.o -c /emph/app/ydeniz/EMPHATIC/DetectorSim/EMPHATICSim/emphaticSim.cc
In file included from /emph/app/ydeniz/EMPHATIC/DetectorSim/EMPHATICSim/emphaticSim.cc:3:
/emph/app/ydeniz/EMPHATIC/DetectorSim/EMPHATICSim/include/EMPHATICSimAnalysisManager.hh:6:10: fatal error: TTree.h: No such file or directory
Have you faced something similar?
I did some research and found similar problems… i understand that the possible issue could be a wrong header location for ROOT
Is there a way to specify the correct headers in cmake
or make
command while building the simulation.
Any other suggestion or approach would be appreciate.
Sorry if it is a basic question and thanks for all your time guys! 
Yael.
It seems that the PATH to ROOT is not set up correctly.
In general you should set-up in your environment:
export ROOTSYS=/path_to_ROOT/root
LD_LIBRARY_PATH={LD_LIBRARY_PATH}:{ROOTSYS}/lib
export LD_LIBRARY_PATH
PATH={PATH}:{G4WORKDIR}/bin/{G4SYSTEM}:{ROOTSYS}/bin
export PATH
(not sure why the dollar sign does not appear before the { but it should be included)
Then you have to change your CMakeLists.txt to link ROOT libraries. Look at the extended example: AnaEx02/CMakeLists.txt
I hope this helps,
cheers
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@guatelli Thanks a lot!! i will tried this now! Can you update AnaEx02/CMakeLists.txt
i think the link did’t save any file and It would be super helpful for me 
Best, Yael.
You can find it in the examples/extended/analysis directory of Geant4
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@guatelli Thanks for all the time you have spent on this post and sorry for bothering you again, i’m still learning how GEANT4 works so i’m still a novice here.
I ran AnaEx02
to find out if it has the same error as my simulations. i can run the AnaEx02 sim but no histograms or Root canvas are displayed. The Root canvas are see in a different location or they must be displayed alongside the simulation?
I also modified my .bashrc
and .bash_profile
as you suggested (i add some more variables i found online) but still getting the same error, even i remove CmakeCache
from the building dir.
Here is my current bash: BASHYAEL.txt (1005 Bytes)
Is that the correct variable set up for G4 and Root Interface?
i really appreciate one last advice, since i’m running out of options 
Hi. I have done as follows:
source path_to_root/bin/thisroot.sh
then I compiled AnaEx02 and I ran it. The output of the simulation is AnaEx02.root. Then you need to use root to open it. e.g.
type: root
then you can create a TBrowser which allows to navigate easily in the root file. Type: new TBrowser()
then you will see your directories. Click on the root file you intend to open.
I hope this helps you.
Susanna
1 Like
@Thanks!! I figure out how to set up my CMakeList properly!!
Also Ana Run Successfully 
i really appreciate your time
Cheers, Yael