[GHC] #8498: gcc hardcoded in build scripts! (ignores the --with-gcc= flag in configure)

[GHC]

#8498: gcc hardcoded in build scripts! (ignores the --with-gcc= flag in configure)
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        Reporter:  carter        |            Owner:
            Type:  bug           |           Status:  new
        Priority:  high          |        Milestone:  7.8.1
       Component:  Compiler      |          Version:  7.7
      Resolution:                |         Keywords:
Operating System:  MacOS X       |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |       Difficulty:  Unknown
       Test Case:                |       Blocked By:
        Blocking:                |  Related Tickets:
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Comment (by simonmar):

 `$CPP` is set by configure's `AC_PROG_CPP`, so it is completely separate
 from `--with-gcc`.  To set this, you need to set `CPP` when invoking
 `configure`, like this:

 {{{
    $ CPP="/path/to/gcc -E" ./configure --with-gcc=/path/to/gcc
 }}}

 I have a patch for the `CC_STAGE0` thing on the way.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8498#comment:9>
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