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SubjectRe: [PATCH] Check compiler version, SMP and PREEMPT.
On Mon, 13 Jan 2003, Daniel Jacobowitz wrote:

> On Mon, Jan 13, 2003 at 04:13:19PM +1100, Rusty Russell wrote:
> > Linus, please apply if you agree.
> >
> > Tridge reported getting burned by gcc 3.2 compiled (Debian) XFree
> > modules not working on his gcc 2.95-compiled kernel. Interestingly,
> > (as Tridge points out) modversions probably would not have caught the
> > change in spinlock size, since the ioctl takes a void*, not a
> > structure pointer...
>
> > D: and compiler version (spinlocks change size on UP with gcc major,
> > D: at least).
>
> Why does this happen? It doesn't look like it should, but I only
> skimmed the headers checking...

I suppose it's due to the

#if (__GNUC__ > 2)
[...]

in include/linux/spinlock.h, i.e. it's not at all gcc's fault.

--Kai


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