[GHC] #7465: ./configure --with--ffi-libraries: ld cannot find libffi in a non-standard location

[GHC]

#7465: ./configure --with--ffi-libraries: ld cannot find libffi in a non-standard
location
---------------------------------+------------------------------------------
    Reporter:  trommler          |       Owner:  trommler           
        Type:  bug               |      Status:  patch              
    Priority:  normal            |   Milestone:  7.8.1              
   Component:  Build System      |     Version:  7.7                
    Keywords:                    |          Os:  Linux              
Architecture:  Unknown/Multiple  |     Failure:  Building GHC failed
  Difficulty:  Unknown           |    Testcase:                     
   Blockedby:                    |    Blocking:                     
     Related:  #5743             |  
---------------------------------+------------------------------------------

Comment(by igloo):

 I've applied the first patch. Looking into the second.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7465#comment:4>
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