[petsc-dev] Win32 and MPIAPI calling convention

[Lisandro Dalcin]

I noticed that MPIAPI is being using for MPI callbacks, likely in
order to suport Microsoft HPC Cluster Pack, right?

Well, if you want to support DeinoMPI (yet another child of MPICH2),
you have to use MPI_CALL.

Perhaps just:

#if defined(DEINO_MPI)
#define MPIAPI MPI_CALL
#endif

would do the trick.

PS: Just FYI, MS MPI has a bug in its headers, if you ever need to
call MPI_File_{c2f|f2c}, you can hostfix like this:

#undef  MPI_File_c2f
#define MPI_File_c2f PMPI_File_c2f
#undef  MPI_File_f2c
#define MPI_File_f2c PMPI_File_f2c

However, I do not  know if MS MPI do actually have any support for any Fortran.

-- 
Lisandro Dalcin
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