Re: [yocto] how to reuse generated library in a nativesdk recipe #sdk #systemd

["Mikko Rapeli" <mikko.rapeli@bmw.de>]

Hi,

(lets keep this on the list too)

On Wed, Feb 19, 2020 at 04:51:18PM +0100, Armando Hernandez wrote:
> Hi Mikko,
> 
> Thanks for your reply. I checked your suggestion but does not work for me.
> I did included a .bbappend file in which I:
> 
>    - re-set EXTRA_OECMAKE to an empty string (i.e. ""). - my intention was
>    to pass no arguments when building the nativesdk. Now I know that this
>    accion overwrites the value of EXTRA_OECMAKE in the original .bb file
>    - added the line BBCLASSEXTEND = "nativesdk" to this new .bbappend file
>    - added the line DEPENDS_class-target += "systemd" to the original .bb
>    file
> 
> I found out that this configures both the target and the nativesdk
> libraries without systemd - which later on causes a failure when bitbake
> attempts to pull up everything to create the final image.
> 
> Basically, I'd like to find a way to unset or overwrite the following
> variables when building the nativesdk package:
> 
>    - SYSTEMD_PACKAGES
>    - SYSTEMD_SERVICE_${PN}
>    - SYSTEMD_AUTO_ENABLE_${PN}
>    - SYSTEMD_SERVICE_${PN}-systemd
>    - SYSTEMD_AUTO_ENABLE_${PN}-systemd
>    - EXTRA_OECMAKE

You can add _class-[target|native|nativesdk] to all variables
to override defaults.

Verify with "bitbake -e".

Hope this helps,

-Mikko

> Is it possible to do so? Or do I come up with another recipe of the sama
> package exclusively for the nativesdk?
> 
> Thanks again.
> 
> Armando Hernandez
> 
> On Wed, Feb 19, 2020 at 10:44 AM <Mikko.Rapeli@bmw.de> wrote:
> 
> > Hi,
> >
> > On Wed, Feb 19, 2020 at 01:37:19AM -0800, Armando Hernandez wrote:
> > > Hello,
> > >
> > > I have a recipe that builds a library. The recipe specifies an
> > additional package "${PN}-systemd" along with other systemd related
> > variables and finally it instructs that the package should be built with
> > "-DWITH_SYSTEMD=ON" being passed to cmake. So far so good. But, I extended
> > this recipe to nativesdk because I need this library on it. When trying to
> > build the corresponding nativesdk package, the build fails at the
> > configuration step (i.e. "do_configure") claiming it cannot find the
> > package systemd.
> > >
> > > Is there a way I can install the -already-generated libraries into my
> > SDK (potentially via the corresponding nativesdk recipe) without having to
> > rebuild the package? Or do I need to somehow include such systemd package
> > in my sdk (which I don't think I need at all)?
> > >
> > > Any hints and pointers as to were to look at are very well appreciated.
> > > Thanks.
> >
> > Make the systemd dependency for target only, e.g. DEPENDS_class-target +=
> > "systemd"
> > etc.
> >
> > There may be relevant use cases to build some of systemd components or
> > tools
> > to native or nativesdk targets too. In that case add BBCLASSEXTEND +=
> > "nativesdk" etc
> > in a bbappend to systemd.
> >
> > Hope this helps,
> >
> > -Mikko