> -----Original Message-----
> From: openembedded-core@lists.openembedded.org <openembedded-
> c...@lists.openembedded.org> On Behalf Of Mikko Rapeli
> Sent: den 5 oktober 2022 08:02
> To: Luca Ceresoli <luca.ceres...@bootlin.com>
> Cc: openembedded-core@lists.openembedded.org
> Subject: Re: [OE-core] [PATCH v2 3/5] u-boot: use openssl-native.bbclass
>
> Hi,
>
> On Tue, Oct 04, 2022 at 11:57:19PM +0200, Luca Ceresoli wrote:
> > Hello Mikko,
> >
> > On Tue, 4 Oct 2022 18:28:07 +0300
> > "Mikko Rapeli" <mikko.rap...@linaro.org> wrote:
> >
> > > It sets all environment variables correctly for openssl-native.
> > >
> > > Signed-off-by: Mikko Rapeli <mikko.rap...@linaro.org>
> >
> > I'm taking this patch for testing, however I have a question, see below.
> >
> > > ---
> > > meta/recipes-bsp/u-boot/u-boot.inc | 3 ++-
> > > 1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/meta/recipes-bsp/u-boot/u-boot.inc b/meta/recipes-bsp/u-
> boot/u-boot.inc
> > > index f022aed732..cd9c578962 100644
> > > --- a/meta/recipes-bsp/u-boot/u-boot.inc
> > > +++ b/meta/recipes-bsp/u-boot/u-boot.inc
> > > @@ -17,7 +17,8 @@ PACKAGECONFIG ??= "openssl"
> > > # u-boot will compile its own tools during the build, with specific
> > > # configurations (aka when CONFIG_FIT_SIGNATURE is enabled) openssl
> is needed as
> > > # a host build dependency.
> > > -PACKAGECONFIG[openssl] = ",,openssl-native"
> > > +OPENSSL_INHERIT .= "${@bb.utils.contains('PACKAGECONFIG', 'openssl',
> 'openssl-native', '', d)}"
> >
> > What is the reason to use '.=' and not just '=' here?
You typically use it to avoid introducing extra space to a variable when a
feature is not enabled.
>
> Hehe, it was in another example which was using conditional inheritance.
>
> meta/recipes-support/gpgme/gpgme_1.18.0.bb
>
> PYTHON_INHERIT .= "${@bb.utils.contains('PACKAGECONFIG', 'python3',
> 'python3native python3targetconfig', '', d)}"
That example is actually wrong. If someone was to enable both "python2"
and "python3", the resulting PYTHON_INHERIT would be
"pythonnativepython3native python3targetconfig", which obviously will
not work.
>
> I guess normal = assignment would work too. If that's preferred I can
> send a v3.
>
> Cheers,
>
> -Mikko
//Peter
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