[GHC] #9945: export list for System.Posix.Internals breaking the build on Windows

[GHC]

#9945: export list for System.Posix.Internals breaking the build on Windows
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              Reporter:  MartinF     |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Compiler    |           Version:  7.11
              Keywords:              |  Operating System:  Windows
          Architecture:              |   Type of failure:  Building GHC
  Unknown/Multiple                   |  failed
             Test Case:              |        Blocked By:
              Blocking:              |   Related Tickets:  #9852
Differential Revisions:              |
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 The export list in System.Posix.Internals includes some names that, thanks
 to CPP, aren't defined when building on Windows. It was compiling fine a
 few days ago, so I think [Phab:D551] was the breaking change.

 I attach the `make` output from the failing step.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9945>
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