[ET Trac] [Einstein Toolkit] #1897: Many ExternalLibraries thorns build when they shouldn't

[Einstein Toolkit]

#1897: Many ExternalLibraries thorns build when they shouldn't
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  Reporter:  hinder                 |       Owner:  eschnett           
      Type:  defect                 |      Status:  assigned           
  Priority:  blocker                |   Milestone:  ET_2016_05         
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:  MPI                
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Changes (by hinder):

  * owner:  => eschnett
  * status:  review => assigned


Comment:

 In the ET call today, we decided that the changes which introduced this
 bug would be reverted (the changes were intended to avoid parts of Carpet
 from being rebuilt, but the logic is incompatible with how the libraries
 actually function).  Erik, would you mind taking care of this?  It's
 probably best, as you know exactly which commits in each repository to
 revert.

 I was just hit by it again when trying to build on my Mac, and this time
 hwloc tried to build itself (it's supposed to be found from MacPorts).

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1897#comment:16>
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