Problems compiling marble with Qt5

[Pedro Neves]

Dirk:

After some (a lot) of work, I've managed to compile marble with Qt5.
Now when I'm trying to compile Subsurface, I get this error:

compiling qt-ui/about.cpp
compiling qt-ui/mainwindow.cpp
compiling save-git.c
In file included from qt-ui/about.h:5:0,
                  from qt-ui/about.cpp:1:
.uic/ui_about.h:13:25: fatal error: QtGui/QAction: No such file or directory
  #include <QtGui/QAction>
                          ^
compilation terminated.
In file included from qt-ui/mainwindow.h:14:0,
                  from qt-ui/mainwindow.cpp:6:
.uic/ui_mainwindow.h:13:25: fatal error: QtGui/QAction: No such file or 
directory
  #include <QtGui/QAction>
                          ^
compilation terminated.
Makefile:1739: recipe for target '.obj/about.o' failed
make: *** [.obj/about.o] Error 1
make: *** Waiting for unfinished jobs....
Makefile:2144: recipe for target '.obj/mainwindow.o' failed
make: *** [.obj/mainwindow.o] Error 1


What am I missing?

Pedro