#2968: ExternalLibraries-openPMD: Fix CMake MPI detection against from-source OpenMPI

Reporter: Max Morris Status: submitted Milestone: Version: Type: bug Priority: major Component:

This fixes an issue which prevents the ET from building when both OpenMPI and openPMD are built from source via ExternalLibraries.

PR is here: https://github.com/EinsteinToolkit/ExternalLibraries-openPMD/pull/3

-- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2968/externallibraries-...