> qreal is a Qt typedef that used to be defined as float on ARM and
> double on all other platforms.
> However, since Qt 5.2 release candidate 1, qreal is double everywhere
> (in Debian we are considering to keep it double on armel, but that
> isn't relevant to Ubuntu). Please be prepared to update your packages
> if they rely on the old behaviour.
> We will probably need to do a transition (i.e. rebuild everything
> that has armhf binaries), however the problem is that upstream did
> not bump the SONAME of Qt libraries, so we are considering doing the
> bump as a Debian/Ubuntu-specific change.
> Feel free to express your opinion about (not) bumping the SONAME at
> http://bugs.debian.org/731261 (that bug also contains links to
> previous discussions on this subject).
This has been discussed at the last vUDS:
And it's agreed that we do want to take up the transition.
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