This build phase executes the qt_preprocess.mak makefile from Xcode
and should be triggered whenever any input of any rule in this makefile
is out of date. It was not triggered when a file that's referenced in
a .qrc file was changed.
The Xcode project lacks those files as rule input, but the makefile
itself has its inputs correctly set up, and can be triggered always.
Pick-to: 6.2 5.15
Fixes: QTBUG-94995
Change-Id: Ida1349039bd6f23a300a610ecbde96f7cd35edb6
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>