[yocto] local file update vs rebuild

[Burton, Ross]

If you modify a recipe then anything that depends on it will be rebuilt.
So changing a file referenced in SRC_URI in a recipe will cause the image
to rebuild if you build the image.

Ross

On 2 August 2017 at 12:03, Takashi Matsuzawa <tmatsuzawa at xevo.com> wrote:

> Hello.
>
> Thank you for your comment.
>
>
> I want to double check.
>
>
> xxxx = image name
>
> yyyy = recipe within xxxx
>
>
> Then, I am not sure if doing below will rebuild yyyy from scratch.
>
>
> $ bitbake xxxx -c cleansstate
>
> $ bitbake xxxx
>
>
> Especially, I am doing things like below within my yyyy.
>
>
> SRC_URI += "file://src/*;subdir=local"
>
> I want to be sure that, if I make modification to the local files
> (referred to as file://... path within SRC_URI variable of xxxx recipe),
> the changes are reflected to the final image.
>
> (Not explicitly specifying -c cleansstate to xxxx).
>
> ------------------------------
> *From:* Khem Raj <raj.khem at gmail.com>
> *Sent:* Tuesday, August 1, 2017 3:42 AM
> *To:* Takashi Matsuzawa; yocto at yoctoproject.org
> *Subject:* Re: [yocto] local file update vs rebuild
>
>
>
> On 7/31/17 4:39 AM, Takashi Matsuzawa wrote:
> > Hello.
> > I am uncertain about do_clean behavior with local files.
> >
> >
> > Say, I have local files referred by my recipe, and I have made changes
> to the files referred.
> > (Note, there is no change in my xxxx.bb file itself.)
> >
> >
> >> SRC_URI += "file://src/*;subdir=local"
> >
> >
> > What makes those changed files reflected to the build?
> > Do I need do_cleanall?  do_cleansstate or maybe do_clean is enough?
> >
> >
> > According to the document
> >
> >
> >> do_clean
> >> do_unpack task forward (i.e. do_unpack, do_configure, do_compile,
> do_install, and do_package).
> >> if no changes have been made and the recipe is rebuilt after cleaning,
> output files are simply restored from the sstate cache.
> >
> >
> > I want to avoid doing do_cleanall often, and I would like to tell
> bitbake that my recipe needs rebuild at the same time not rebuilding others.
> > But at the same time I want to avoid building my single explicity.
> > I just want to build the image name as target.
>
> I think ccleansstate should be good.
>
> >
> >
>
>
> --
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