[GHC] #11114: Can't compile ghc on fedora 23

[GHC]

#11114: Can't compile ghc on fedora 23
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        Reporter:  waghanza          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         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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Comment (by thomie):

 Run `git submodule update --init` after switching branches, see
 https://ghc.haskell.org/trac/ghc/wiki/Building/GettingTheSources#Gettingabranch.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11114#comment:1>
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