A user says the IBM AIX compiler has this line in the
system header file /usr/include/sys/m_param.h
#define hz 100
Since the LAMMPS file pppm.cpp uses a variable named "hz"
this causes a line like
hz = 1.0
to be changed by the pre-processor to
100 = 1.0
which the compiler obviously doesn't like.
Does anyone know a compiler setting that will get around
this? E.g. one that will force a #define statement to be
ignored? I don't really want to change LAMMPS source
code each time a compiler creates a problem like this.
If any IBM person wants to comment on why it's a good
design decision to preempt a common 2-letter lower-case
variable name with their header file, please chime in.