[GHC] #8393: hsc2hs copies #define/#undef directives to generated .hs file when cross-compiling

[GHC]

#8393: hsc2hs copies #define/#undef directives to generated .hs file when cross-
compiling
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        Reporter:  rwbarton          |            Owner:  rwbarton
            Type:  bug               |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  hsc2hs            |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Description changed by hvr:

Old description:

> See summary. This causes a cross-compilation of ghc to fail while
> building GHC/Stack.hsc from libraries/base, because base.cabal no longer
> specifies `extensions: CPP` as of dfb52c3d5.

New description:

 See summary. This causes a cross-compilation of ghc to fail while building
 GHC/Stack.hsc from libraries/base, because base.cabal no longer specifies
 `extensions: CPP` as of [dfb52c3d5/base].

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8393#comment:2>
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