[PATCH] __FreeBSD_kernel__

[Alexander Kabaev]

On Sun, 3 Jul 2011 17:47:02 +0200
Robert Millan <rmh at debian.org> wrote:

> 2011/7/3 Robert Millan <rmh at debian.org>:
> > 2011/7/3 Alexander Kabaev <kabaev at gmail.com>:
> >> Not really, unless you have way of sticking this definition into
> >> past compiler releases.
> >
> > There is one way, but it's slow.  It basically involves waiting for
> > long enough that any past release of any compiler you care about
> > includes the macros you need, before starting to use them. :-)
> 
> However, in the case of FreeBSD, where the compilers are imported into
> your codebase, isn't it enough if support is present in the FreeBSD
> version of these compilers (for production and development releases of
> FreeBSD), plus the latest release of the upstream version of each of
> those compilers?
> 
> -- 
> Robert Millan

The slow way would be the right way if you were inclined to really take
it. Once old releases of tools that can be broken by the new macro
use are long and forgotten we can start on relying on said macro, but
not before.

I disagree with the notion that we supporting only the imported
compiler version is sufficient in FreeBSD. This was a long time
deficiency of our development policy and it did more harm than good in
the long term. We do want FSF source releases to work work out of the
box, and when they do not, it is our loss. I know for a fact that
several of our bigger customers are using compilers built for them by a
third party and do not rely on the toolchain we supply in source tree.
Breaking them would be bad. 

-- 
Alexander Kabaev
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