Messages in this thread |  | | Date | Tue, 8 May 2001 08:59:41 +0200 | From | Jamie Lokier <> | Subject | Re: CML2 design philosophy heads-up |
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Eric S. Raymond wrote: > Tom Rini <trini@kernel.crashing.org>: > > Only sort-of. There are some cases where you can get away with that. > > Probably. eg If you ask for PARPORT, on x86 that means yes to PARPORT_PC, > > always (right?) > > Yes. So the right answer there isn't to use a derivation but to say: > > require X86 and PARPORT implies PARPORT_PC > unless X86==n suppress PARPORT_PC > > which forces PARPORT_PC==y and makes the question invisible on X86 machines, > but leaves the question visible on all others.
Which is unfortunately wrong if you want the parport subsystem on x86 but won't be using the parport_pc driver with it. I.e. you'll be using some other driver which isn't part of the kernel tree. Perhaps a modified version of parport_pc, perhaps something else.
The default should be PARPORT_PC==y, but it's actually valid for some applications to _require_ PARPORT_PC==n or PARPORT_PC==m.
-- Jamie
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