[GHC] #14784: RTS header files can't be used with a C++ compiler

[GHC]

#14784: RTS header files can't be used with a C++ compiler
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        Reporter:  niteria           |                Owner:  hvr
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.1
       Component:  Runtime System    |              Version:
      Resolution:                    |             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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Comment (by hvr):

 Ok, so, the check at that place is to fail early, in case C compiler is
 thrown at the RTS header files while *not* being in C99 mode (due to
 misconfiguration or whatever), rather than run into less obvious compile
 errors lateron.

 If we can establish the minimum version of ISO C++ which supports all C99
 features we rely on, we can tweak the CPP check to something like e.g.

 {{{#!c
 #if !((__cplusplus >= 201103L) || (__STDC_VERSION__ >= 199901L))
 # error __STDC_VERSION__ does not advertise C99 or later, nor C++11 or
 later
 #endif
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14784#comment:2>
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