On martes, 14 de marzo de 2017 11:32:39 -03 Olivier Goffart wrote: [snip] > So here are the choice: > > 1- Re-implement QFunction, with similar semantic as std::function. > > 2- Lift the constraint that we can't use the stdlib in our ABI > > 3- Do nothing and keep using awkward interface when we need callback. > > > #3 is, as usual, the easier (status quo) and will probably happen. #1 is a > somewhat difficult task, but not that hard. We will just end up with a poor > copy of std::function. #2 was always dismissed in the past, but I think it > should be seriously considered.
(quick reply after skimming trough the thread, will read it fully tomorrow hopefully) In the (2) case it will mean that we distro packagers will be forced to change Qt's SONAME. Yeah, the whole of it. There is a way to get (2) implemented: if Qt exposes an std:: function then it can add some of it's SONAME to Qt's own (ugly, but...) So libQt5Core5 would become something like libQt5StdFooCore5 and such. In that way we can [not so easily] do mass rebuilds of all Qt-using stuff. And if this happens it would be *much* better if it's somehow coordinated by Qt upstreams so we can all keep the same SONAME between distros. [not so easily] there is a *huge* amount of code using Qt and every single change would mean weeks of work (at very very *very* least 2 or 3 of them). We need to recompile everything on each arch after all. Oh, and if some non-other Qt api is exposed it should also become part of the SONAME. Not coordinating this at Qt level means that we distros maintainers will be on our own and each of us will do what we can and there will be mayheam between distros' solutions and we will start hating each other and... not a nice situation, really. So if we are going to only expose libstdc++'s API weshould really consider making it part of the SONAME. After all we discussed some time ago that the libstdc++ lib doesn't breaks BC so frequently. Now what exactly we should expose in the SONAME is another issue. -- <perrito666> SlackDeb: velo como un entrenamiento shaolin para geeks, en vez de meditación y tortura física, abstinencia de internet y sexo Horacio Francisco Sebastián "Perrito" Durán Barrionuevo, sobre un viaje que Federico "SlackDeb" Peretti estaba planeando con su novia. Lisandro Damián Nicanor Pérez Meyer http://perezmeyer.com.ar/ http://perezmeyer.blogspot.com/
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