[cfe-dev] math.h on Windows

[John Thompson]

Thanks, Chris.

>Can this be implemented like __has_builtin is?
Oh, I totally missed this!  Yes, I'll redo it like this.
>This can be done by just not registering the 'magic' macros in
no-extensions mode.

How is no-extensions mode detected?  I was expecting a flag in LangOptions,
but I don't see it, and there is no -fno-extensions option.  There is
a -fbuiltin option and a NoBuiltin flag in LangOptions, but that seems to be
for builtin functions, not preprocessor macros.  Or perhaps it needs
adding?  I don't see an equivalent in gcc.  Or perhaps something more
specific like "-fno-magic-macros=[0|1]" or "-fno-magic-macro=(macroname)"

-John

-- 
John Thompson
John.Thompson.JTSoftware at gmail.com
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