[ET Trac] [Einstein Toolkit] #2011: provide fortran MPI bindings

[Einstein Toolkit]

#2011: provide fortran MPI bindings
-----------------------------------+----------------------------------------
 Reporter:  rhaas                  |       Owner:                     
     Type:  defect                 |      Status:  new                
 Priority:  major                  |   Milestone:                     
Component:  EinsteinToolkit thorn  |     Version:  development version
 Keywords:  MPI                    |  
-----------------------------------+----------------------------------------
 The MPI external library currently does not provide Fortran bindings for
 MPI. I observe this on a Linux box with OpenMPI installed and mpicxx in
 the path and with no MPI_XXX set in my option list. ExternalLibraries/MPI
 parses the output of mpicxx -showme:link which I verified to happen by
 inspecting its output and
 bindings/Configuration/Capabilities/make.MPI.defn.

 For the autodetection we'd have to also consider the output of mpif90
 -showme:link and likely also mpif77 showme:link in case the F90 interfaces
 are somewhere other than the (typeless) f77 interfaces.

 This can be impossible for the case where we build OpenMPI with the
 toolkit since OpenMPI will provide either F2008 or F90 bindings depending
 on the compiler and the libraries for the two have different names. This
 however is something that is only decided in OpenMPI's own configure
 script.

 We also need to make sure mpi.mod and mpif.h are found by Fortran's "USE"
 and "INCLUDE" statements respectively.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/2011>
Einstein Toolkit <http://einsteintoolkit.org>
The Einstein Toolkit