[GHC] #7833: installed GHC refers to libffi in the build directory

[GHC]

#7833: installed GHC refers to libffi in the build directory
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  Reporter:  igloo             |          Owner:  igloo           
      Type:  bug               |         Status:  closed          
  Priority:  high              |      Milestone:  7.8.1           
 Component:  Build System      |        Version:  7.6.2           
Resolution:  fixed             |       Keywords:                  
        Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown      |     Difficulty:  Unknown         
  Testcase:                    |      Blockedby:                  
  Blocking:                    |        Related:                  
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Comment(by kazu-yamamoto):

 I confirmed that these patches works well on my Mac! Thanks.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7833#comment:12>
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