[yocto] Strange build dependency

[Christopher Larson]

On Mon, Mar 14, 2016 at 6:55 AM Martin Jansa <martin.jansa at gmail.com> wrote:

> On Mon, Mar 14, 2016 at 02:44:58PM +0100, Gary Thomas wrote:
> > On 03/14/2016 01:51 PM, Gary Thomas wrote:
> > > On 03/14/2016 01:46 PM, Burton, Ross wrote:
> > >>
> > >> On 14 March 2016 at 12:41, Gary Thomas <gary at mlbassoc.com <mailto:
> gary at mlbassoc.com>> wrote:
> > >>
> > >>     How can I find out what's going on here?
> > >>
> > >>
> > >> bitbake-whatchanged is generally helpful here.  Do a build in one
> configuration, switch to the other, run
> > >> bitbake-whatchanged.  It will identify the hashes that have changed
> and try and chase them down.
> > >>
> > >> That said perl is quite a deep recipe so rebuilding that will
> certainly bubble up the tree causing all sorts of rebuilds.
> > >
> > > Thanks, I'll give this a try.
> > >
> >
> > I've run this and I still don't have a clue.  Here's what I got.  Maybe
> > you can explain what I'm seeing?
>
> You can also create snapshot before and after the change with
> scripts/sstate-diff-machines.sh and compare the signatures manually.
>

bitbake -S printdiff is a useful option as well.
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