On Wed, Apr 28, 1999 at 02:53:37AM +0200, Olaf Seibert wrote:
> On Tue, 27 Apr 1999, Simon Burge wrote:
> 
> > "Eduardo E. Horvath" wrote:
> > 
> > > sparc64 currently runs in either 32-bit or 64-bit mode, so the mbuf size
> > > should vary depending on the kernel.  What we really need is some cpp
> > > define that reports pointer size so we can check that rather than:
> > > 
> > > #if defined(alpha) || (defined(sparc64) && defined(__arch64__)) || \
> > > 	(defined(mips) && ...) || (defined(powerpc) ....
> > 
> > It doesn't have to be that bad:
> > 
> > #define MSIZE	(128 * (sizeof(void *) / 4))
> 
> But you can never use MSIZE in an #if, since the preprocessor does not
> know about sizeof().
> 
> (No, don't tell me about gcc extensions. I know. It's Not Standard.)
> 

I repeat the question somebody else asked:

do we really need a CPP definition, or do we just need it so that the 
_compiler_ can declare the mbuf header?

	-is