[OE-core] Problems with perl 5.22

[Khem Raj]

Compare the output of configure run on working and non working versions.
Usually this is very helpful. See if its enabling or disabling something
new.
On Mar 10, 2016 10:55 PM, "Jens Rehsack" <rehsack at gmail.com> wrote:

>
> > Am 10.03.2016 um 06:13 schrieb Gary Thomas <gary at mlbassoc.com>:
> >
> > I'm working on a package (amanda - the Advanced Maryland Archiving
> > system) that is written heavily in perl with swig interfaces to C.
> > This code ran great until the update to perl 5.22; it now dies a
> > horrible death on almost every activity.  These failures seem to
> > always be in the swig generated wrappers, but that may just be
> > where most of the work gets done.
> >
> > I've narrowed this down to exactly the change to perl 5.22 from
> > 5.20. Using bisect as well as experimentation (e.g. trying all
> > the compiler combinations that have occurred since a last good
> > version) and I can go from working to failing by only the change
> > in perl.
> >
> > The interesting (scary) thing is that I've built amanda for my
> > target natively on my board running debian, including perl 5.22.
> > This means I can't say definitively  that perl 5.22 is the culprit
> > as on debian it runs fine.  So, it's got something to do with the
> > OE environment/porting/packaging of perl and not just the revision.
> >
> > I've also tested this on multiple architectures (ARM, PowerPC) with
> > the same results - with perl 5.20 amanda works, with perl 5.22 it fails.
> >
> > I've compared the actual 5.22.1 sources used by OE-core and debian
> > and they are subtly different, although I can't pinpoint any change
> > that might be responsible.
> >
> > For the moment, I can just fall back to perl 5.20 for my target
> > that needs to run amanda, but this isn't a real solution (e.g.
> > in this state I can't propose my recipe to any layer as it's
> > totally broken with the current OE-core).  I'd like to see this
> > fixed but the amanda code (swig wrappers) are horribly complex
> > which makes debugging quite the challenge, not to mention they
> > may be about the only way to uncover the bug, whether it's in
> > amanda or perl.
> >
> > Any suggestions on how to move forward?
>
> Since I have no clue what's wrong and how it fails (backtrace
> would point in some directions), several ideas might work:
>
> How clean is your build location (we realize that often between
> updates some files remain in our target images until we wipe
> tmp/ - cleansstate for image doesn't help ...)?
>
> Did you prove the library path's of your *.so's? Perl does
> almost everything within libperl.so - build against wrong version
> causes in weird crashes (scan DBI mailing list for admin's
> build issues of DBI on AIX/HP-UX ...).
>
> Maybe share your recipe can help to reproduce the problem
> elsewhere and debug locally.
>
> Cheers
> --
> Jens Rehsack - rehsack at gmail.com
>
>
> --
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>
>
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