[GHC] #5011: installing xcode 4 breaks ghc linking

[GHC]

#5011: installing xcode 4 breaks ghc linking
-------------------------------+--------------------------------------------
    Reporter:  carter          |       Owner:              
        Type:  bug             |      Status:  new         
    Priority:  normal          |   Component:  Compiler    
     Version:  7.0.2           |    Keywords:              
    Testcase:                  |   Blockedby:              
          Os:  MacOS X         |    Blocking:              
Architecture:  x86_64 (amd64)  |     Failure:  None/Unknown
-------------------------------+--------------------------------------------

Comment(by carter):

 just to be clear, this error, unlike the other os x error, prevents
 compilation from succeeding.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5011#comment:2>
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