[GHC] #7678: GHC should compile cleanly with clang

[GHC]

#7678: GHC should compile cleanly with clang
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        Reporter:  thoughtpolice        |            Owner:  thoughtpolice
            Type:  bug                  |           Status:  closed
        Priority:  high                 |        Milestone:  7.8.1
       Component:  Compiler             |          Version:  7.7
      Resolution:  fixed                |         Keywords:  clang
Operating System:  Unknown/Multiple     |     Architecture:
 Type of failure:  Building GHC failed  |  Unknown/Multiple
       Test Case:                       |       Difficulty:  Unknown
        Blocking:  7602                 |       Blocked By:
                                        |  Related Tickets:
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Comment (by refold):

 @thoughtpolice

 Did you manage to compile Cabal with Clang? GHC depends on Cabal, but
 according to [https://github.com/haskell/cabal/issues/1496 this bug
 report] Cabal currently fails to build when Clang is used as a
 preprocessor.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7678#comment:13>
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