[GHC] #13935: AC_CHECK_FUNC yields incorrect result for pthread functions on NixOS causing build to fail

[GHC]

#13935: AC_CHECK_FUNC yields incorrect result for pthread functions on NixOS
causing build to fail
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        Reporter:  mjvoge02          |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Build System      |              Version:
      Resolution:                    |             Keywords:  autoconf,
                                     |  AC_CHECK_FUNC, configure, nixos
Operating System:  Linux             |         Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by mjvoge02):

 It did indeed fix it. Thanks!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13935#comment:2>
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