RE: [bitbake-devel] conditional inheriting classes does not work with bbappends

[Peter Kjellerstedt <peter.kjellerstedt@axis.com>]

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I don’t think there is a generic solution to this problem. What we do in the particular case is to enable the PACKAGECONFIG in a bbappend and then also add an extra inherit useradd to the bbappend file. Not perfect, but it works.

//Peter

From: bitbake-devel@lists.openembedded.org <bitbake-devel@lists.openembedded.org> On Behalf Of Christian Eggers
Sent: den 8 april 2022 18:54
To: bitbake-devel@lists.openembedded.org; Christopher Larson <kergoth@gmail.com>
Subject: Re: [bitbake-devel] conditional inheriting classes does not work with bbappends

On Thursday, 7 April 2022, 23:59:39 CEST, Christopher Larson wrote:
> There’s no way to avoid that, inherit lines are evaluated *at the moment of inherit* on that line, they aren’t postponed.

ok, this is what I would expect. So how to handle this:

- do not conditionally inherit in PACKAGECONFIG (may be impossible)?
- do not set PACKAGECONFIG in bbappend files (use distro/machine/layer/local config for this)?

regards
Christian


>
> --
> Christopher Larson
> chris_larson@mentor.com<mailto:chris_larson@mentor.com>, chris.larson@siemens.com<mailto:chris.larson@siemens.com>, kergoth@gmail.com<mailto:kergoth@gmail.com>
> Principal Software Engineer, Embedded Linux Solutions, Siemens Digital Industries Software
_______________________________________________________​

Christian



Eggers


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> On Apr 7, 2022, 7:17 AM -0700, Christian Eggers <ceggers@arri.de<mailto:ceggers@arri.de>>, wrote:
> > Example: meta-openembedded/meta-networking/recipes-support/chrony/chrony_4.2.bb
> >
> > --------------------------------8<--------------------------------
> > # Add chronyd user if privdrop packageconfig is selected
> > inherit ${@bb.utils.contains('PACKAGECONFIG<mailto:$%7b@bb.utils.contains('PACKAGECONFIG>', 'privdrop', 'useradd', '', d)}
> > USERADD_PACKAGES = "${@bb.utils.contains('PACKAGECONFIG', 'privdrop', '${PN}', '', d)}<mailto:$%7b@bb.utils.contains('PACKAGECONFIG',%20'privdrop',%20'$%7bPN%7d',%20'',%20d)%7d>"
> > USERADD_PARAM:${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'privdrop', '--system -d / -M --shell /bin/nologin chronyd;', '', d)}<mailto:$%7b@bb.utils.contains('PACKAGECONFIG',%20'privdrop',%20'--system%20-d%20/%20-M%20--shell%20/bin/nologin%20chronyd;',%20'',%20d)%7d>"
> >
> > ...
> >
> > PACKAGECONFIG ??= ...
> > -------------------------------->8--------------------------------
> >
> >
> > Problem #1: useradd is not inherited because PACKAGECONFIG is set below the conditional "inherit"
> > statement. Even when I add "privdrop" to PACKAGECONFIG here, useradd.bbclass is not inherited. I
> > must move the PACKAGECONFIG line above the inherit statement to make this work.
> >
> > Problem #2: Due to problem #1, useradd.bbclass is also not inherited when I add "privdrop" to
> > PACKAGECONFIG in bbappend file (in a custom layer).
> >
> > regards
> > Christian



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