I have a problem by re-compiling LAMMPS after havin modified some few .cpp files through addition of printf commands.
Context: Lammps of august 2012,
downloaded from a tarball
I compiled first one time using :
> make serial
It worked. Then I went in the examples/reax/Fe_O_H directory and executed in the terminal:
ln ../../../src/lmp_serial mylmp
mylmp < in.Fe_O_H > myoutput.txt
Then, I open myoutput.txt using gedit, and read:
LAMMPS(9 Aug 2012)
reading data file ...
orthogonal box = (0 0 0) to (25 25 25)
1by1by MPI processor grid
ERROR: Invalid pair style (force.cpp:168)
So, I tried adding some printf commands, such as: printf("a new pair is created \n"); in force.cpp at line 142.
as well as: printf("LAMMPS::create () called \n"); , line 451 in LAMMPS::create() in lammps.cpp
Then, I re-compiled. It went quickly and successfully. After executing again lammps from the example/reax/Fe_O_H directory, the same error output message was retrieved, without though some messages being displayed in the terminal while expected though.
Can somebody please tell me how I can proceed to make lammps display such messages when executing some intern classes, and also tell me what was wrong in my way of proceeding?