[GHC] #9895: No -mtriple param being passed to opt/llc when cross compiling

[GHC]

#9895: No -mtriple param being passed to opt/llc when cross compiling
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              Reporter:  erikd       |            Owner:  erikd
                  Type:  feature     |           Status:  new
  request                            |        Milestone:  7.10.1
              Priority:  normal      |          Version:  7.9
             Component:  Compiler    |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Moderate (less
  Unknown/Multiple                   |  than a day)
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by erikd):

 Luite clued me in on the existance of a "settings" file which is read by
 the function `initSysTools` in the  `SysTools` module. Currently the extra
 options for LLVM's `opt` and `llc` are initialized as:

 {{{#!hs
     sOpt_lo      = [],
     sOpt_lc      = [],
 }}}

 Adding the `-mtriple=...` option here seems the obvious place.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9895#comment:1>
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