[GHC] #12799: Itimer.c doesn't compile on iOS non-threaded RTS

[GHC]

#12799: Itimer.c doesn't compile on iOS non-threaded RTS
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       Component:  Runtime System    |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Building GHC      |  Unknown/Multiple
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"1732d7ac43ca578deca39ea5a63cbf34f3cd9dd5/ghc"
 1732d7ac/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1732d7ac43ca578deca39ea5a63cbf34f3cd9dd5"
 Define thread primitives if they're supported.

 On iOS, we use the pthread-based implementation of Itimer.c even for a
 non-threaded RTS. Since 999c464, this relies on synchronization
 primitives like Mutex, so ensure those primitives are defined whenever
 they are supported, even if !THREADED_RTS.

 Fixes #12799.

 Reviewers: erikd, austin, simonmar, bgamari

 Reviewed By: simonmar, bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2712

 GHC Trac Issues: #12799
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12799#comment:1>
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