Changes (by Roland Haas):

status:

resolved (was open)

On Mac OS, if I set MPI_DIR=BUILD in order to build OpenMPI using the MPI thorn, Cactus should copy the built version of mpirun into exe/<config>. However, if it finds one in /usr/local/bin, it copies that one instead.

NB: to compile OpenMPI, you need gnu99 or later in CFLAGS, as OpenMPI needs the 'asm' directive, which is a GNU extension.

Keyword: ExternalLibraries/MPI

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/1776/wrong-mpirun-copied-to-utilities-directory