[ET Trac] [Einstein Toolkit] #1667: ExternalLibraries/MPI should report error messages

[Einstein Toolkit]

#1667: ExternalLibraries/MPI should report error messages
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  Reporter:  hinder  |       Owner:                     
      Type:  defect  |      Status:  new                
  Priority:  minor   |   Milestone:                     
 Component:  Cactus  |     Version:  development version
Resolution:          |    Keywords:  MPI                
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Comment (by rhaas):

 So would "AUTOMATIC" be clearer in implying that it may build? SEARCH does
 not imply building to my ears.

 Addendum: may make sense to have the SEARCH method accept an MPI_DIR to
 give it a starting point to search, so that one can set MPI_DIR=some-mpi-
 root and it will find both libmpi.so and libmpich.so etc. So just setting
 MPI_DIR would SEARCH for an MPI installation in there, while setting
 MPI_DIR and MPI_LIBS would still search for the include files but fix the
 libraries to whatever they are. So in a blending from SEARCH to MANUAL,
 SEARCH would be

   MPI_DIR = SEARCH

 and MANUAL would be
   MPI_DIR = MANUAL
   MPI_COMPILE_FLAGS = -I/usr/lib/mpich/include -DMPICH_SKIP_CXX_SEEK
   MPI_LINK_FLAGS = -lmpich -lpthreads -L/usr/lib/mpich/lib64

 with
   MPI_DIR = /usr/lib/mpich

 being somewhere in between. This is kind of my personal wishlist for how I
 wished the system would behave.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/1667#comment:18>
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