Handling __STDC__ on Windows

[Paul D. Smith]

I have a bunch of macros in GNU make that try to determine whether the
compiler groks ANSI C, like this:

  #if defined (__cplusplus) || (defined (__STDC__) && __STDC__)

But, that doesn't work on Windows because the Windows compilers do this:

    #define __STDC__ 0

I guess the feeling is they support standard C with extensions so they
define it to 0 or something--seems silly to me but there's not much we
can do about this.


What is the autoconf-recommended, portable way to handle this?

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