[Buildroot] [PATCH 0/7] Introduce the _AVAILABLE mechanism

[Yann E. MORIN]

Thomas, Arnout, All,

On Wednesday 17 October 2012 Thomas Petazzoni wrote:
> On Wed, 17 Oct 2012 21:47:15 +0200, Yann E. MORIN wrote:
> 
> > Maybe the solution would be that we do not add _AVAILABLE to
> > sub-options, but we can still use it from sub-options. Eg.
> > (condensed):
[--SNIP--]
> > Isn't that sufficient?
> 
> From a quick review, it sounds sufficient indeed. What surprises me is
> why we didn't think about this solution the other day when discussing
> your _AVAILABLE patch set.

To be honest, I'm surprised too I did not think about it. ;-]

In fact, as an after-thought, I do know why. That's because I was thinking
the other way-around: a package that depends on a sub-option of another
package, sub-option which in turn depends on a third package.  *That* one
would require an _AVAILABLE for sub-options.

For example, libuuid which is a sub-option of util-linux (although that one
sub-option has no dpendency; but you get the idea) is select by a few other
packages (eg. parted, ntfs-3g...).

And going *that* route is IMHO not what we want.

And first, we need to know if the case really exists (I was not able to
find a good heuristic to find such a case with a simple grep, so I gave
up the search).

Regards,
Yann E. MORIN.

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