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distro_features_check.bbclass: Allow checking of required/conflicting features 

This add support to list required/confliting distro features for a
recipe; this avoids user mistake when building recipes/images which
would not work depending on DISTRO_FEATURES option set.

Adding:

,----[ Use example ]
| inherit distro_features_check
|
| REQUIRED_DISTRO_FEATURES = "x11"
| CONFLICT_DISTRO_FEATURES_mx6 = "wayland"
`----

In the image recipe allow us to make clear to user that this image
needs X11 and /cannot/ be build with Wayland support in i.MX6
platforms, for example.

(From OE-Core rev: a7519be6a23869ebafbf712370dab86ab92f68a5)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Otavio Salvador 2013-08-01 19:13:57 -03:00 committed by Richard Purdie
parent db60ee702f
commit 26e543cb21
1 changed files with 28 additions and 0 deletions
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meta/classes/distro_features_check.bbclass Normal file
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# Allow checking of required and conflicting DISTRO_FEATURES
#
# REQUIRED_DISTRO_FEATURES: ensure every item on this list is included
# in DISTRO_FEATURES.
# CONFLICT_DISTRO_FEATURES: ensure no item in this list is included in
# DISTRO_FEATURES.
#
# Copyright 2013 (C) O.S. Systems Software LTDA.
python () {
required_distro_features = d.getVar('REQUIRED_DISTRO_FEATURES', True)
if required_distro_features:
required_distro_features = required_distro_features.split()
distro_features = (d.getVar('DISTRO_FEATURES', True) or "").split()
for f in required_distro_features:
if f in distro_features:
break
else:
raise bb.parse.SkipPackage("missing required distro feature %s (not in DISTRO_FEATURES)" % required_distro_features)
conflict_distro_features = d.getVar('CONFLICT_DISTRO_FEATURES', True)
if conflict_distro_features:
conflict_distro_features = conflict_distro_features.split()
distro_features = (d.getVar('DISTRO_FEATURES', True) or "").split()
for f in conflict_distro_features:
if f in distro_features:
raise bb.parse.SkipPackage("conflicting distro feature %s (in DISTRO_FEATURES)" % conflict_distro_features)
}