[OE-core] Consistency and use cases for IMAGE_FSTYPES

[Denys Dmytriyenko]

On Sat, Mar 10, 2012 at 07:29:20AM +0100, Koen Kooi wrote:
> 
> Op 9 mrt. 2012, om 22:39 heeft Tom Rini het volgende geschreven:
> 
> > Hey all,
> > 
> > Over in meta-ti I kicked off a discussion
> > (https://lists.yoctoproject.org/pipermail/meta-ti/2012-March/000779.html)
> > about if we should be using '?=' or '+=' with IMAGE_FSTYPES in the
> > machine conf files.  This has been discussed a little bit before
> > (http://thread.gmane.org/gmane.comp.handhelds.openembedded.core/2060/focus=2061).
> > The problem is we have the following and I believe ultimately
> > conflicting use cases:
> > - The machine needs to say 'I need or support the following formats'
> > - The distro needs to say 'I always want format X'
> > - The user needs to say 'I know best, give me only format X'
> > - The user needs to say 'I know best, give me what you support + X'
> > 
> > We achieve this today, but not very nicely.  For the last one you need
> > to start playing order of operations games and that's just not nice.
> > My suggestion is that we need to change what the machine.conf sets to
> > another variable (SOMETHING_IMAGE_FSTYPES), and a default
> > IMAGE_FSTYPES becomes ?= ${SOMETHING_IMAGE_FSTYPES}.  Distros, and
> > users can then work more easily with their use cases.  Comments?
> 
> EXTRA_IMAGE_FSTYPES!

+1

MACHINE_IMAGE_FSTYPES + DISTRO_IMAGE_FSTYPES? jk :)

-- 
Denys