FindMPI: Fix multiple configure runs (!1556) · Merge requests · CMake / CMake

Christian Pfeiffer requested to merge ChrisTX/cmake:findmpi-found-cond into master Dec 05, 2017

Due to a erroneous logical dependency on a temporary variable, FindMPI would depend its FOUND status on the set of flags needed to support compiler-implicit MPI support after the first configure run.

This behavior is especially causing a misreported NOT FOUND status after the first run on MPI implementations without MPI compiler like MS-MPI or MPICH2 on Windows.

Thanks to @alzi for making me aware of this issue.

FindMPI: Fix multiple configure runs

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