[GHC] #8683: add "cpp program" and "cpp program options" to settings file

[GHC]

#8683: add "cpp program" and "cpp program options" to settings file
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              Reporter:  carter      |            Owner:  carter
                  Type:  feature     |           Status:  closed
  request                            |        Milestone:  7.8.3
              Priority:  high        |          Version:  7.8.1-rc2
             Component:  Compiler    |         Keywords:
            Resolution:  fixed       |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:  #8439
  None/Unknown                       |
             Test Case:              |
              Blocking:  9094        |
Differential Revisions:              |
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Comment (by mietek):

 Does this mean it is now possible to bootstrap {{{cabal-install}}} without
 specifying {{{--no-doc}}}? (#9174)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8683#comment:71>
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