[Pkg-xfce-devel] Bug#842675: Bug#842675: Bug#842675: Bug#842675: lightdm FTBFS on mips, mipsel and mips64el: error: symbols mismatch

[Yves-Alexis Perez]

control: tag -1 help
On Sat, 2016-11-19 at 15:15 +0100, Yves-Alexis Perez wrote:
> On Mon, 2016-10-31 at 14:00 +0100, Yves-Alexis Perez wrote:
> > On Mon, 2016-10-31 at 10:34 +0000, Radovan Birdic wrote:
> > > The problem is in liblightdm-qt-3-0.symbols where these symbols are
> > > missing.
> > > 
> > > I have created and attached a patch that adds missing symbols into this
> > > file
> > > and resolves this issue.
> > > With this patch package builds successfully on mips*, i386 and amd64
> > > architectures.
> > 
> > I have to admit I'm not really comfortable *removing* symbols from a file
> > just
> > for some architectures. It looks weird to me that it would only happen on
> > those arches. Maybe something changed in Qt but I'm highly puzzled here.
> > 
> 
> Well, as assumed, the build fails on i386/amd64 with the updated symbols
> file.
> I might be able to provide multiple symbols file but it does look weird in
> any
> case.

So, I've tried to build 1.18.2-2 on arm64 (which suceeded in the past), and it
now fails, indicating it's indeed a problem somewhere else.

I've tried to build using g++5 and it now works fine.

So the symbol changes is due to the upgrade to gcc/g++6. I'm not sure it's
really expected, so any help appreciated.

I'm adding Matthias to CC: in case he has any idea.

Matthias: I'm experiencing a build failure in lightdm due to symbol changes in
a C++ library only on non intel arches, following upgrade to gcc6. Does that
ring you a bell or something? The changed symbols are only destructors:

QDBusError::~QDBusError()
QByteArray::~QByteArray()
QHash<int, QByteArray>::~QHash()
QString::~QString()

Regards,
-- 
Yves-Alexis
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: This is a digitally signed message part
URL: <http://lists.alioth.debian.org/pipermail/pkg-xfce-devel/attachments/20161120/45183636/attachment.sig>