[PyQt] Compiling PyQt5 on a Raspberry Pi

[Scott Kitterman]

On Wednesday, August 07, 2013 20:00:49 Phil Thompson wrote:
> On Wed, 07 Aug 2013 09:10:14 -0400, Scott Kitterman <debian at kitterman.com>
> 
> wrote:
> > On Wednesday, August 07, 2013 12:14:05 Phil Thompson wrote:
> >> On Mon, 5 Aug 2013 23:24:18 +0400, Dmitry Shachnev <mitya57 at ubuntu.com>
> >> 
> >> wrote:
> >> > On Mon, Aug 5, 2013 at 8:24 PM, Dmitry Shachnev <mitya57 at ubuntu.com>
> >> 
> >> wrote:
> >> >> This is not specific to Raspbian, but happens on all systems
> >> >> where qreal == float (i.e. all ARM systems). This particular
> >> >> 
> >> >> issue happens because in qbrush.sip we have:
> >> >>   typedef QVector<QPair<double, QColor>> QGradientStops;
> >> >> 
> >> >> while in Qt 5.1 qreal is used instead of double:
> >> >>   typedef QPair<qreal, QColor> QGradientStop;
> >> >>   typedef QVector<QGradientStop> QGradientStops;
> >> >> 
> >> >> However, this is not the only issue that makes the build fail.
> >> >> In Debian, we have a patch that fixes more issues. We haven't
> >> >> yet finished updating it for PyQt5, so it doesn't fully solve
> >> >> the problem (any help in finalizing it is appreciated). I have
> >> >> attached the current version of that patch.
> >> 
> >> As of tonight's snapshot I don't think any of that patch is needed.
> > 
> > Great.  We have almost the exact same patch for PyQt4 on arm (Fedora
> 
> uses
> 
> > it
> > as well).  Would you please have a look at that as well (I can send the
> > exact
> > patch if you need it).  Once the snapshot is up, I'll build it and see
> > (Dmitry
> > and I have been working together on this).
> 
> We'll see after PyQt5.
> 
> >> > I will add that the remaining issue is:
> http://paste.debian.net/22474/
> 
> >> > The generated sipQtWebKitWidgetspart8.cpp has this line:
> >> > 
> >> > typedef void (*sipVH_QtWidgets_116)(sip_gilstate_t,
> >> > sipVirtErrorHandlerFunc, sipSimpleWrapper *, PyObject *, double
> >> > *,double *,double *,double *);
> >> 
> >> Event when compiling for ARM?
> >> 
> >> > I guess this is a bug in sip, there should be qreal's there (as
> >> > defined in qgraphicswidget.sip).
> >> 
> >> They should be either doubles or floats depending on how qreal is
> >> defined.
> >> If they are doubles on ARM then it is a bug.
> > 
> > The sipQtWebKitWidgetspart8.cpp was generated on arm (armhf
> 
> specifically).
> 
> It shouldn't be a problem with tonight's snapshot.

I did try to build this and sent you results, but it's caught in the 
moderation queue due to size.

Scott K