On 12/21/2012 05:31 AM, Andrey Ponomarenko wrote: > Hi, > > Here are useful reports about binary and source compatibility between > Qt4 and Qt5 APIs: > Binary compatibility: > http://upstream-tracker.org/compat_reports/qt/4.8.4_to_5.0.0/abi_compat_report.html > Source compatibility: > http://upstream-tracker.org/compat_reports/qt/4.8.4_to_5.0.0/src_compat_report.html
Thank you for the links! It is wonderful that Rosa makes such work public, I am delighted to see it! However, I noticed immediately that source compatibility 'problems' are significantly over-counted. For example, I looked at my own change to Qt::MouseButton and Qt::MouseButtons. This is binary incompatible, because the size of the field has been widened to 32 bits. But it is source compatible: Any source code use (e.g., checking which button was responsible for causing the event) of a Qt::MouseButton or Qt::Mousebuttons value which exists in a 4.8.4 Program will compile correctly, because I have not eliminated or changed any of the Enum values or names which did exist in 4.8.4. I only added new values. The report generator is definitely making an incorrect assessment in such cases. Or, is the report intended to require compatibility in both directions? (If so, then it is of very little use for Qt users- they already know that they MUST recompile/rebuild in order to run with the Qt 5.x library versions). _______________________________________________ Development mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/development
