As it happens, Telepathy-Qt4 builds with Qt 5 without changes in the source; only examples fall off due to usage of QWidgets. However, as Telepathy-Qt publicly depends on Qt ABI, the library name should reflect the Qt version change. Maybe the time is ripe to appropriate the name telepathy-qt or libtelepathy-qt for the source tree (certain bitrotting old projects notwithstanding), and assign the library name based on the discovered Qt version?
This is actually already done as part of bug 43222... Details: project renamed to telepathy-qt library builds as libtelepathy-qt4.so.2.<version> for Qt4 and as libtelepathy-qt5.so.0.<version> for Qt5 *** This bug has been marked as a duplicate of bug 43222 ***
Good, thanks.
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