Use Qt5 LTS compilation patches git repository from KDE

[cgilles (HumanDynamo)]

Hi,

Current qt5 port use last 5.15.2 official tarball published to compile source code.

Since there is no Qt5.15 LTS tarball published as opensource by Qt team, KDE project has created a own git repository including all official security/improvement collection patches published in Qt5 project.

All main Linux distributions start to use this repository as source code reference to maintain the qt5 package as LTS for version > 5.15.2.

In digiKam project i used successfully this repository to compile the official Linux AppImage bundle. This allow to fix plenty of bugs in application due to UPSTREAM Qt bugs (as for ex. a compatibility with Mariadb >= 10.6 with Qt Mysql plugin).

The bug for digiKam relevant of this improvement is this one :

​https://bugs.kde.org/show_bug.cgi?id=114417

The script used to checkout the KDE repository with AppImage Bundle compilation is here :

​https://invent.kde.org/graphics/digikam/-/blob/master/project/bundles/3rdparty/ext_qt/5.15-LTS/kde-qt5-lts.sh

I highly recommend to use the KDE qt 5.15 LTS repository to maintain the qt5 port in Macports.

Best

Gilles Caulier