Axel Huebl b26c85301d OpenMPI: Prefer Last 3.X (#9945) ... The latest OpenMPI release, v4.0.0, does not build with many GCC variants. Since this is our default, a lot of users get hit. Let's wait for some point releases.		2018-11-26 16:46:04 -06:00
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spack	OpenMPI: Prefer Last 3.X (#9945)	2018-11-26 16:46:04 -06:00