[Trilinos-Users] [EXTERNAL] Packages don't process MPI_BASE_DIR

[Bartlett, Roscoe A]

Robert,

The MPI compiler wrappers should be automatically be adding the -I include directories to find 'mpi.h'.  Otherwise, if you really need to hack the system, you might be able to use something like:

  -DCMAKE_C_FLAGS="-I $MPI_BASE_DIR/include"

(assuming you have MPI_BASE_DIR set in your env, otherwise use the full path) in your configure of Trilinos on this machine.

If that does not work, then please let me know and we can find a way to get that include directory on the compile lines without having to modify any of the Trilinos CMakeListst.txt files.  (CMake would not be much of a build tool if you could not get it to add -I to the compile commands without having to modify the CMakeListstxt files directly.)

I don't think that we can add "${MPI_BASE_DIR}/include" to the CMakeLists.txt files in Trilinos because I don't think that is 100% portable.

-Ross


Dr. Roscoe A. Bartlett, PhD
Sandia National Laboratories
Trilinos Software Engineering and Integration Technologies Lead
Consortium for the Advanced Simulation of Light Water Reactors (CASL) Physics Integration Infrastructure Lead


> -----Original Message-----
> From: Trilinos-Users [mailto:trilinos-users-bounces at trilinos.org] On Behalf Of
> Robert Sawko
> Sent: Thursday, June 02, 2016 10:04 AM
> To: trilinos-users at trilinos.org
> Subject: [EXTERNAL] [Trilinos-Users] Packages don't process MPI_BASE_DIR
> 
> Hi,
> 
> I am compiling Trilinos on a new machine which has very minimal software
> installation so I am coming up with strange errors which may or may not be
> useful in improving cmake config. For a while I could not compile Teuchos as
> TeuchosTime.cpp kept requesting mpi.h despite -DMPI_BASE_DIR pointing to a
> correct directory. mpi.h was not in the standard /usr/include too.
> 
> 
> I added include_directories("${MPI_BASE_DIR}/include") to CMakeLists.txt in
> teuchose/core/src. I suppose there's either a better way to deal with this within
> Trilinos cmake setup? Setting -DCMAKE_CXX_FLAGS="-I ..."
> could also solve it. But it seems to me that there's something strange about
> cmake config namely that the MPI_BASE_DIR variable is handled only in a
> handful of packages: intrepid and phalanx.
> 
> Kind Regards,
> Robert
> --
> Dr Robert Sawko
> Research Staff Member, IBM
> Daresbury Laboratory
> Keckwick Lane, Warrington
> WA4 4AD
> United Kingdom
> --
> Email (IBM): RSawko at uk.ibm.com
> Email (STFC): robert.sawko at stfc.ac.uk
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