[poky] Dependency problem

[Jussi Kukkonen]

On 5 September 2017 at 11:36, Koeller, Thomas <Thomas.Koeller at baslerweb.com>
wrote:

> Hello all,
>
> I have been struggling with a problem for a couple of days now, without
> success so far. Hope somebody on this list can help.
>
> I have two recipes, let's call them recipe_a and recipe_b (I am not
> allowed to share the actual recipes for legal reasons). recipe_a depends on
> recipe b; there is a line reading 'DEPENDS = "... recipe_b ..." in
> recipe_a.bb. Whenever I invoke recipe_b directly (bitbake recipe_b), all
> is well and recipe_b produces the expected results. In particular, the
> populate_sysroot task places a number of header files in the sysroot
> directory. If, however, I do 'bitbake recipe_a', I find that, while several
> tasks from recipe_b are executed, populate_sysroot is obviously not among
> them. I should probably mention that recipe_b inherits from the qprebuilt
> class.
>

qprebuilt is not a class I'm aware of -- it might be a good idea to review
the class.

I noticed that recipe_a sets a variable 'PREBUILT = "1"', which does not
> appear to be used anywhere and is not mentioned in the yocto docs. Maybe
> this has something to do with the problem, or maybe not.
>
> I'd be grateful for any information that might be useful in solving this
> problem.
>

You didn't mention the Yocto version. Sysroot functionality has changed
quite a bit in recent releases so you should do that. The changes also mean
that unusual sysroot tricks written a few releases back will not work as is
on more recent releases. See
http://www.yoctoproject.org/docs/current/ref-manual/ref-manual.html#migration-2.3-recipe-specific-sysroots
for more details

On latest release "bitbake -g -u taskexp recipe-a" will give you a UI for
browsing task dependencies. You should find "recipe-a.do_configure"
depending "recipe-a.do_prepare_recipe_sysroot", and that depending on
"recipe-b.do_populate_sysroot". If this is not the case then it seems
likely something in the recipe (or its inherits) is undoing that dependency.

 - Jussi
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