[GHC] #14712: After git pull make can't work with make clean

[GHC]

#14712: After git pull make can't work with make clean
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           Reporter:  jiamo          |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  low            |         Milestone:
          Component:  Build System   |           Version:  8.5
           Keywords:                 |  Operating System:  MacOS X
       Architecture:  x86_64         |   Type of failure:  Building GHC
  (amd64)                            |  failed
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 In the clean master repo:  configure make can work.
 But after git pull.  Just run make. It always failed.
 After make clean. it can success. But it will take long time as  in the
 clean repo.

 (It is not bug I can find other type to desc)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14712>
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