[OE-core] a question about recipe style

[Robert P. J. Day]

  perusing the bitbake user manual, and ran across the section
discussing the "override style" operators _append, _prepend and
_remove, and thought i'd go looking through the OE recipes for an
actual example of the use of "_remove", and the only example i found
is in meta/recipes-extended/newt, but it looks a bit awkward, so i
just want to know about recommended style.

  there are two recipe files there -- libnewt_0.52.17.bb and
libnewt-python_0.52.17.bb -- with the following structure. that first
recipe file contains (among other things) the following:

PACKAGES_prepend = "whiptail "
...
FILES_whiptail = "${bindir}/whiptail"

  ok, so that recipe defines an additional package, and adds a single
file to that package, whereupon the second recipe file contains:

require recipes-extended/newt/libnewt_${PV}.bb
...
PACKAGES_remove = "whiptail"

  it just seems awkward for recipe 1 to explicitly add a package, only
for recipe 2 to include that recipe file, and subsequently remove that
package.

  it's not a big deal, but from a style perspective, i would have
thought one would first create a generic libnewt.inc file with common
content, then define the two recipe files off of that. does that make
sense in terms of best programming principles?

rday

-- 

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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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