[OE-core] is there a standard for inheriting from core-image?

[Robert P. J. Day]

  followup of a post from a while back, here's a snippet from
core-image.bbclass:

===

CORE_IMAGE_BASE_INSTALL = '\
    task-core-boot \
    task-base-extended \
    \
    ${CORE_IMAGE_EXTRA_INSTALL} \
    '

CORE_IMAGE_EXTRA_INSTALL ?= ""

IMAGE_INSTALL ?= "${CORE_IMAGE_BASE_INSTALL}"

===

  then there's this from core-image-gtk-directfb.bb:

===

inherit core-image

IMAGE_INSTALL += "\
        ${CORE_IMAGE_BASE_INSTALL} \
        task-core-basic \
        task-core-gtk-directfb-base \
"

===

  argh.  as i read it (and i don't trust myself to read any of this
properly anymore), appending ${CORE_IMAGE_BASE_INSTALL} is superfluous
since it's already there from core-image.bbclass.

  and, again, what's best practice for appending to IMAGE_INSTALL?
+=?  _append?  just trying to mentally enforce some order on all of
this.

rday

p.s.  and as i muttered about before, this sort of thing from
core-image-clutter.bb:

===

IMAGE_INSTALL = "\
    ${CORE_IMAGE_BASE_INSTALL} \
    task-core-clutter-core \
    task-core-clutter-tests \
    task-core-clutter-apps"

inherit core-image

===

really just introduces unnecessary confusion, as
CORE_IMAGE_EXTRA_INSTALL would have been the obvious thing to use
here, no?

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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