Re: [PATCH] Detect GNU/kFreeBSD in user-visible kernel headers

Hi Ed,

2011/11/22 Ed Schouten <ed@80386.nl>:
>> +#undef __FreeBSD_kernel__
>> +#define __FreeBSD_kernel__
>
> So why not remove the #undef and not let the compiler define it at all?

Well I have no objection if the #undef is removed.

I don't understand why you consider it a problem though.  It's not
terribly useful but if compilers can opt in and define it (usually as
an empty macro), this doesn't hurt either AFAICT.  The problem I
described before was about compilers being forced to provide a number.

Anyhow, I don't think it makes a big difference.
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