[GHC] #4496: add a configure build option to use system libffi for Linux

[GHC]

#4496: add a configure build option to use system libffi for Linux
------------------------------+---------------------------------------------
  Reporter:  juhpetersen      |          Owner:                  
      Type:  feature request  |         Status:  closed          
  Priority:  normal           |      Milestone:  7.6.2           
 Component:  Build System     |        Version:  7.1             
Resolution:  duplicate        |       Keywords:                  
        Os:  Linux            |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown     |     Difficulty:  Unknown         
  Testcase:                   |      Blockedby:                  
  Blocking:                   |        Related:                  
------------------------------+---------------------------------------------

Comment(by ian@…):

 commit 3005e90936c47c1f71672bf6c84fff20cb14014b
 {{{
 Author: Ian Lynagh <ian at well-typed.com>
 Date:   Thu Nov 29 22:22:39 2012 +0000

     Add configure option to use system provided libffi; fixes #5743

     Based on patch from Peter Trommler:

         From 293495d40f62e691520331a41c6d85d82e120169 Mon Sep 17 00:00:00
 2001
         From: Peter Trommler <ptrommler at acm.org>
         Date: Sun, 21 Oct 2012 18:47:01 +0200
         Subject: [PATCH] Add configure option to use system provided
 libffi This
          fixes track # 5743 and #4496.

  configure.ac        |   55
 +++++++++++++++++++++++++++++++++++++++++++++++++++
  ghc.mk              |   11 ++++++++-
  mk/config.mk.in     |    7 ++++++
  rts/ghc.mk          |   42 ++++++++++++++++++++++++++++++++++----
  rts/package.conf.in |    3 ++
  5 files changed, 111 insertions(+), 7 deletions(-)
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4496#comment:10>
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