[OE-core] ALLOW_EMPTY versus ALLOW_EMPTY_${PN}? a couple clarifications

[Robert P. J. Day]

  just trying to clarify the gory details of the ALLOW_EMPTY setting.
first, across several .bb files, there is a mixture of these two:

ALLOW_EMPTY = "1"
ALLOW_EMPTY_${PN} = "1"

  what's the difference?  what does the first one represent if you're
not specific?  does that cover *all* generated packages?

  next, i assume there's no real value to hardcoding the package name,
as in:

./meta/recipes-multimedia/alsa/alsa-utils_1.0.25.bb:ALLOW_EMPTY_alsa-utils = "1"

(i assume the above could have just used the standard "_${PN}",
right?)

  i think that might be everything for now.

rday

-- 

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

Twitter:                                       http://twitter.com/rpjday
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