On Wednesday 06 November 2013 17:40:11 Pino Toscano wrote: > In data sabato 2 novembre 2013 15:29:05, Lisandro Damián Nicanor Pérez > > Meyer ha scritto: > > Hi! Starting from Qt 5.2.0 (most probably from rc1 and definitely not > > from beta1 currently in experimental) Qt5 will switch qreal from > > float to double on arm*. > > Did upstream bump the SONAME of QtCore5 and any other qt5 library > because of this?
No. And I also agree this should have been done from Qt5's first version, but that didn't happened. > > Of course we are still on time to discuss this, and this is the reason > > of this mail. What do you think WRT the above changes? > > This will basically break the ABI of basically all the Qt5 libraries on > those architectures. Unless upstream already managed the SONAME bump > already, it would imply that Debian has to maintain it on its own... > are you sure these changes are worth the pain they cause? Depends on how you see it. Only three apps curently B-D on Qt5 in the archive. Yes, this means that a binary incompatible change will need to occur without a soname bump in (so far) one arch. But I *think* this can be managed quite easily with three armhf-binNMUs. Of course, I might be missing something else (as I did wrt LSB/binary compatibilty with other distros), that's why I asked here before doing anything. > > On the other hand, if the above change is kept, symbols for Qt5 on > > armhf managed with pkg-kde-tools' symbolshelper will need an explicit > > double for armhf instead of using qreal's subst. This is because on > > Qt4 qreal will be kept as float. > > This is another issue, i.e. pkgkde-symbolshelper not being able to > distinguish version of qt for substitutions. I agree here. > > We have the option to keep some archs in float by passing a > > compilation parameter. I've done so for armel and sh4, so only armhf > > will switch to double. > > My option goes on keeping the status quo of qreal as it was, on > architectures that managed to build qtbase-opensource-src already. Thanks for your opinion and time :) I will ask in Qt's dev list to see if other distros are going to keep the ABI or not for this cases. Kinds regards, Lisandro. -- Lisandro Damián Nicanor Pérez Meyer http://perezmeyer.com.ar/ http://perezmeyer.blogspot.com/
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