Re: #ifdef ALPHA?
On Fri, 4 Dec 1998, Oscar Levi wrote:
> On Fri, Dec 04, 1998 at 04:18:02PM -0800, Joey Hess wrote:
> > Hi, what's the correct way to ifdef something out so it's only done on the
> > alpha arch? Does #ifdef ALPHA work? Please cc to me, I'm not on this list.
> AFAIK, there is no ALPHA constant. There is a __alpha in GCC. Since
> we are patching for GCC or egcs, it may be ok to use it. In general,
> it is better to avoid ifdefs for architectures and change the code
> according to the real problem. For example, create a constant call
> ALIGN_BOUNDARY that is 4 for i386 and 8 for Alpha. Set this in a
> config.h sort of way, and change the code to use the macro. There
> should be a way to use this method in nearly every case.
I think this is a bug. GCC should define __alpha__ (note __ *following* the
alpha) not __alpha. Imake, for instance, has __alpha in various places in
its scripts, and is broken as a result.
The kernel uses:
successfully in a couple of places.
Bob McElrath (email@example.com) Univ. of Wisconsin at Madison