Quoting Richard Purdie <[email protected]>:
On Sun, 2020-07-05 at 15:24 -0400, Robert P. J. Day wrote:
Quoting Ross Burton <[email protected]>:
> On Sun, 5 Jul 2020 at 11:50, Robert P. J. Day
<[email protected]> wrote:
> > however, one can also generate a standard SDK with the generic
> > (image-independent):
> >
> > $ bitbake meta-toolchain
> >
> > which clearly does not identify an image (all that recipe does,
> > really, is "inherit populate_sdk"), so i *guessed* that using that
> > command will generate a standard SDK based only on what can be found
> > in the various .conf files and associated variables (MACHINE, DISTRO,
> > etc.) without being tied to a particular image.
> >
> > just about to dive into the details, but is the above at least a
> > simplistic way of looking at it?
>
> At the most fundamental level, you've asked bitbake to build
> 'meta-toolchain'. Looking in meta-toolchain.bb will show you what
> that entails. It's basically just the compilers and a few other tools
> that were added as needed over the years.
i'd assumed as much, but is there a reason that the meta-toolchain target
is not mentioned at all in the SDK manual? Would that not be the right
place to mention it, even briefly?
meta-toolchain is really old, from the days before the populate_sdk
task for images existed. It was created as a compatibility artefact and
as an example to show you could do standalone SDKs like that without
images.
I'd imagine its not mentioned as we envisaged the populate_sdk tasks
taking over from meta-toolchain. I'm not even sure we test meta-
toolchain on the autobuilder. It probably continues to work as its so
similar to buildtools-tarball and friends.
Should it be mentioned? Maybe...
that actually clears things up. i'll let others higher up the food chain
decide if the meta-toolchain target should be documented, or if it's
entirely superseded by the populate_sdk tasks.
rday
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