[GHC] #12147: GHC's Linker Should Support Relocation Type 42

[GHC]

#12147: GHC's Linker Should Support Relocation Type 42
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           Reporter:  gershomb          |             Owner:
               Type:  bug               |            Status:  new
           Priority:  normal            |         Milestone:
          Component:  Compiler          |           Version:  8.0.1
           Keywords:                    |  Operating System:  Linux
       Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
          Test Case:                    |        Blocked By:
           Blocking:                    |   Related Tickets:
Differential Rev(s):                    |         Wiki Page:
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 As per: https://github.com/DanielG/ghc-
 mod/issues/762#issuecomment-213743585

 "gas >= 2.26 uses some new relocation types (in particular type 42, aka
 R_X86_64_REX_GOTPCRELX), which are not supported by ghc's linker."

 This causes problems when linking in libs with certain sorts of c bits via
 the GHC API (at the very least).

 Support should be added.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12147>
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