[ET Trac] [Einstein Toolkit] #2158: Without MPI installed, Cactus doesn't build

[Einstein Toolkit]

#2158: Without MPI installed, Cactus doesn't build
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  Reporter:  Steven R. Brandt  |      Owner:  (none)
      Type:  defect            |     Status:  review
  Priority:  unset             |  Milestone:
 Component:  Other             |    Version:  development version
Resolution:                    |   Keywords:
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Comment (by Steven R. Brandt):

 My recollection is that we decided sometime ago that these packages would
 use the special string NO_BUILDDIR rather than the empty string to signify
 that the build dir was not set. I believe the hwloc thorn is doing the
 correct thing when it sets that option.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/2158#comment:6>
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