[GHC] #14493: Why is g++ necessary to compile GHC?

[GHC]

#14493: Why is g++ necessary to compile GHC?
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  wontfix           |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 Right after I hit "submit" the reason became clear: `libffi` is explicitly
 looking for a C++ preprocessor. Consequently it uses `.cpp` as the
 extension for the source file it feeds `gcc`. This compels `gcc` to go
 looking for a C++ compiler. It looks like we will just need to document
 the `g++` requirement.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14493#comment:1>
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