[GHC] #15916: GHC doesn't build on powerpc64 architecture on systems other than GNU / Linux

[GHC]

#15916: GHC doesn't build on powerpc64 architecture on systems other than GNU /
Linux
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           Reporter:  pkubaj     |             Owner:  (none)
               Type:  bug        |            Status:  new
           Priority:  normal     |         Milestone:  Research needed
          Component:  Compiler   |           Version:  8.6.2
           Keywords:             |  Operating System:  Unknown/Multiple
       Architecture:  powerpc64  |   Type of failure:  Building GHC failed
          Test Case:             |        Blocked By:
           Blocking:             |   Related Tickets:
Differential Rev(s):             |         Wiki Page:
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 I'd like to bootstrap GHC for FreeBSD/powerpc64, but GHC seems to be
 supported only on Linux for powerpc64 architecture.

 Relevant code:
 https://github.com/ghc/ghc/blob/1c2c2d3dfd4c36884b22163872feb87122b4528d/rts/StgCRun.c#L875
 https://github.com/ghc/ghc/blob/1c2c2d3dfd4c36884b22163872feb87122b4528d/rts/StgCRunAsm.S#L112

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15916>
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