On Mon, 5 Feb 2007 14:21:41 -0800 (PST) Linus Torvalds wrote:
> On Mon, 5 Feb 2007, David Woodhouse wrote:
> >
> > Ten years ago, people used 'depends on' to fix the tools, so that then
> > you want to enable something like USB_STORAGE, it can automatically turn
> > SCSI on for you.
> >
> > Isn't that what you wanted?
>
> Try it. It's not what it does.
>
> If you have a
>
> depends on SCSI
>
> and you did not say you wanted SCSI, you'll never even *see* the question.
>
> It will *not* turn on SCSI automatically for you. Quite the reverse. It
> will not even show you the option.
>
> In contrast, it you do a
>
> select SCSI
>
> you'll see the question, and it will do exactly what you claim "depends
> on" does. Which yes, is what we want.
>
> So what's your problem? You argue as if you didn't understand the
> difference between "depends on" and "select".
I think the problem is "who is make *config" for?".
David wants it to be for developers (ISTM) and "select" is a
hassle for us.
Linus wants it to be for (unadvanced) users, but they tend to just
use distro kernels and distro configs, according to David, and I
agree with that.
So I think that make *config is more for developers and advanced
(not embedded) users.
> As an example of this, look at SATA. It does "select SCSI" if you select
> CONFIG_ATA, _exactly_ because it actually wants to turn on the SCSI layer
> *regardless* of what the user said. Because if the user said "n" to SCSI,
> the user simply didn't know that the SATA code uses the SCSI code.
>
> Which is an example of what I've been saying all along: "select" makes
> sense. USB_STORAGE should have done the same.
>
> Claiming that "select" is evil is just totally strange.
It's a real problem for developers who actually try to modify
configs.
---
~Randy
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