[GHC] #8439: add a CPP program field to Settings file (decouple CPP program and C compiler choice)

[GHC]

#8439: add a CPP program field to Settings file (decouple CPP program and C
compiler choice)
-------------------------------------+-------------------------------------
              Reporter:  carter      |            Owner:
                  Type:  feature     |           Status:  closed
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.7
             Component:  Build       |         Keywords:
  System                             |     Architecture:  Unknown/Multiple
            Resolution:  duplicate   |       Difficulty:  Unknown
      Operating System:              |       Blocked By:
  Unknown/Multiple                   |  Related Tickets:  #8683
       Type of failure:              |
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by thomie):

 * status:  new => closed
 * resolution:   => duplicate
 * component:  Compiler => Build System
 * milestone:  7.10.1 =>


Comment:

 Duplicate of #8683.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8439#comment:2>
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