[GHC] #5743: Configurably use system-provided libffi

[GHC]

#5743: Configurably use system-provided libffi
------------------------------+---------------------------------------------
  Reporter:  nomeata          |          Owner:  trommler        
      Type:  feature request  |         Status:  patch           
  Priority:  normal           |      Milestone:  7.6.2           
 Component:  Build System     |        Version:  7.7             
Resolution:                   |       Keywords:                  
        Os:  Linux            |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown     |     Difficulty:  Unknown         
  Testcase:                   |      Blockedby:                  
  Blocking:                   |        Related:  #4496           
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Comment(by ptrommler@…):

 commit 7ee5bedc5e5039c9bb3ba06b50a4395e579a4b0e
 {{{
 Author: Peter Trommler <ptrommler at acm.org>
 Date:   Fri Nov 30 13:40:10 2012 +0100

     Link in-tree libffi to rts. Fixes trac #5743.

  rts/ghc.mk |    6 ++++++
  1 files changed, 6 insertions(+), 0 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5743#comment:20>
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