[GHC] #8713: Avoid libraries if unneeded (librt, libdl, libpthread)

[GHC]

#8713: Avoid libraries if unneeded (librt, libdl, libpthread)
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              Reporter:  ip1981      |            Owner:
                  Type:  bug         |           Status:  upstream
              Priority:  normal      |        Milestone:
             Component:  GHCi        |          Version:  7.6.3
            Resolution:              |         Keywords:
      Operating System:  Other       |     Architecture:  x86_64 (amd64)
       Type of failure:  GHCi crash  |       Difficulty:  Moderate (less
             Test Case:              |  than a day)
              Blocking:              |       Blocked By:
Differential Revisions:              |  Related Tickets:
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Comment (by kgardas):

 Hi Igor,
 thanks for the patch. I'm looking into it and I'm curious if it may be
 solved by other way. Please what's OS is exactly detected by
 {{{
 $ sh config.guess
 }}}
 I'm curious since if it is Solaris than this should be improved to handle
 Dyson specifically since I think Solaris kernel + GNU libc is not Solaris
 anymore. And if it is not Solaris than at least patch to DriverPipeline.hs
 may be done in a little bit more clean way. I don't like using this #ifdef
 in parameters list construction. If you add proper support for OSDyson,
 then you can add OSDyson *BSDs, Darwin etc. and be done with this bit in
 more clean way IMHO. But well, the crucial question is how the OS is
 identified by config.guess...BTW: generally speaking I hope I'm right here
 but GHC devs tries to get rid of platform configuration related #ifdefs in
 the code and use proper Haskell handling of this. In your patch you
 reverts this goal and this is not good IMHO. :-)

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8713#comment:15>
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