[GHC] #9257: CC_CLANG_BACKEND not reconfigured during bindist install

[GHC]

#9257: CC_CLANG_BACKEND not reconfigured during bindist install
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        Reporter:  MtnViewMark       |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Build System      |          Version:  7.8.2
      Resolution:                    |         Keywords:  clang
Operating System:  MacOS X           |     Architecture:  Unknown/Multiple
 Type of failure:  Installing GHC    |       Difficulty:  Moderate (less
  failed                             |  than a day)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by MtnViewMark):

 Just a note for future readers:

 The reverse situation works fine. That is, a bindist built on a non-clang
 system will install fine on a clang system. The one invocation of gcc -E,
 for rts/dist/package.conf.install.raw, builds fine without the special
 clang preprocessor flags (-Wno-invalid-pp-token and -Wno-unicode).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9257#comment:1>
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