Hello Sébastien,
* Sébastien Le Roux wrote on Tue, Feb 03, 2009 at 07:59:11PM CET:
>
> I have prepared a 'configure.ac' which tests both for Fortran
> compilers and MPI library. If configure is done using '--with-mpi'
> option then the configure looks for MPI libs and if succeed ad the
> option '-DMPI' for the compilation of some files (F90) of the code.
> So far everything fines except that I have noticed that some compilers
> (IBMs: mpxlf90/mpxlf95) do not allows such command. For these
> compilers you need to tell first to the preprocessor that you are
> defining a variable using '-WF,-DMPI' the only command '-DMPI' won't
> work. I wonder if there is a macro to find the good way to tell this
> to the preprocessor, if needed, and so I guess, depending on the
> Fortran compiler ?
Do you use Automake in addition to Autoconf? If no: you can just do
something like this in configure.ac
if $the_compiler_is_IBMS; then
FDEFS=`echo " $DEFS" | sed 's| -D| -WF,-D|g'`
else
FDEFS=$DEFS
fi
AC_SUBST([FDEFS])
and use $(FDEFS) in the rules in Makefile.in.
If you do use Automake: please use separate Makefile.am files for
Fortran and non-Fortran code. Put this in the ones for Fortran:
DEFS=@FDEFS@
Similarly, I guess, for CPPFLAGS and AM_CPPFLAGS.
I have this issue on the list of things to eventually fix in Automake,
but not yet a patch, nor a hurry. ;-)
As another possible workaround (at least for DEFS), can you use a config
header?
Hope that helps.
Cheers,
Ralf
_______________________________________________
Autoconf mailing list
Autoconf@xxxxxxx
http://lists.gnu.org/mailman/listinfo/autoconf
