Ralf Wildenhues wrote:
* Jeff Squyres wrote on Thu, Feb 11, 2010 at 12:41:15PM CET:
On Feb 11, 2010, at 1:00 AM, Ralf Wildenhues wrote:
* Jeff Squyres wrote on Wed, Feb 10, 2010 at 10:02:27PM CET:
WHAT: Add -DOPEN_MPI=1 to the mpif77 and mpif90 command lines
It won't work with IBM xlf which needs -WF,-D. I'm sure there are other
Fortran compilers that don't grok -D either (and may not have any other
flag), but I'm not sure whether OpenMPI cares about them.
Ah, good!
If we care, it is easy enough to add a configure test to figure this
kind of stuff out.
Sure.
Are you aware of any other Fortran compilers that don't accept -D, and
if so, what flags they *do* accept?
I've come across old Fortran 77 compilers that don't do any preprocessing
and thus don't accept any related flags. I don't remember details
though, and I'm not aware of any currently-used ones; my experience with
Fortran compilers is limited though.
Cheers,
Ralf
It seems to me that if the compiler doesn't support any form of
preprocessing, then the user can't tell whether one has defined OPEN_MPI
or not.
So, one defines it when the capability exists, and does nothing for
compilers lacking the capability.
-Paul
--
Paul H. Hargrove phhargr...@lbl.gov
Future Technologies Group Tel: +1-510-495-2352
HPC Research Department Fax: +1-510-486-6900
Lawrence Berkeley National Laboratory
