[mpich-devel] binding a new MPI type with fortran

[Dave Goodell]

On Mar 28, 2013, at 2:16 PM CDT, Tatiana V. Martsinkevich <tanya.manekineko at gmail.com> wrote:

> We are implementing some fault tolerance related functionality in
> MPICH-3.0.2. We define a new MPI type in
> ~/mpich-3.0.2/src/include/mpi.h.in as:
> 
>  typedef void* MPI_Pattern;
> 
> then in the same file we define:
> 
>  int MPI_Pattern_declare(char* name, MPI_Pattern* handler);
> 
> However, when I run autogen.sh and fortran binding script executes it
> gives out:
> 
> Pattern_declare: No parm type for MPI_Pattern* (MPI_Pattern*)
> Use of uninitialized value $fparm in pattern match (m//) at
> ./buildiface line 1289, <FD> line 1710.

Do you want Fortran interfaces at this time or would you be just as happy to have C-only bindings right now?  The former will require hacking on one or more of the "buildiface" scripts in the "src/binding/LANGUAGE" directories.  The latter can be accomplished by moving your prototypes and types near the end of mpi.h.in, near the prototypes for "MPIX_Mutex_unlock" and "PMPIX_Mutex_unlock".

Also, as a side note, please use "MPIX_" for nonstandard MPI extensions.  It makes nonstandard interfaces very obvious to users and will help prevent potential issues with standardization in the future.

-Dave