Re: [RFC] Splitting kernel headers and deprecating __KERNEL__

[David Woodhouse]

On Tue, 2004-11-30 at 14:25 -0800, Linus Torvalds wrote:
> 
> On Tue, 30 Nov 2004, Alexandre Oliva wrote:
> 
> > >  (a) it can't break anything (ie the old location still includes the new 
> > >      one, exactly the same way)
> > 
> > You mean it can't break anything in a kernel build, or it can't break
> > anything except for userland apps that abused kernel headers and used
> > to get away with that?
> 
> It can't break userland either.

That depends on your definition of 'break'. It should prevent abuse.

To pick a specific example, since you like them: where userland programs
are including atomic.h, and hence writing programs which don't compile
on some architectures, and which compile on others but silently give
non-atomic results, it's perfectly acceptable and indeed advisable to
prevent compilation across the board.

Some people might call that breakage; I don't.

-- 
dwmw2

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