FTBFS: ktoon 0.8-1: undefined reference to `DDebug::DDebug(DebugType)'

Binary package hint: ktoon

ktoon fails to build from source in Ubuntu and Debian currently.

From the build.log:
[...]
g++ -Wl,--no-undefined -shared -Wl,-soname,libdgui.so.1 -o libdgui.so.1.0.0 .obj/ccbar.o .obj/ccbutton.o .obj/collapsiblewidget.o .obj/danimwidget.o .obj/dapplication.o .obj/dcellview.o .obj/dcolorbutton.o .obj/dconfigurationdialog.o .obj/ddisplaypath.o .obj/deditspinbox.o .obj/delabel.o .obj/dflatbutton.o .obj/dfontchooser.o .obj/dformfactory.o .obj/dimagebutton.o .obj/doptionaldialog.o .obj/dradiobuttongroup.o .obj/drulerbase.o .obj/dsqueezelabel.o .obj/dtabdialog.o .obj/dtabwidget.o .obj/dtip.o .obj/dtoolbox.o .obj/dtreelistwidget.o .obj/dvhbox.o .obj/dwidgetlistview.o .obj/dwizard.o .obj/dxyspinbox.o .obj/kseparator.o .obj/daction.o .obj/dactionmanager.o .obj/dmdiwindow.o .obj/ddatepicker.o .obj/ddatetable.o .obj/dcommand.o .obj/dthemedocument.o .obj/dthememanager.o .obj/dclicklineedit.o .obj/dtreewidgetsearchline.o .obj/dbuttonbar.o .obj/dstackedmainwindow.o .obj/dtabbedmainwindow.o .obj/dtoolview.o .obj/dviewbutton.o .obj/dworkspacemainwindow.o .obj/dmainwindow.o .obj/moc_ccbutton.o .obj/moc_collapsiblewidget.o .obj/moc_dapplication.o .obj/moc_dcellview.o .obj/moc_dcolorbutton.o .obj/moc_dconfigurationdialog.o .obj/moc_ddisplaypath.o .obj/moc_deditspinbox.o .obj/moc_delabel.o .obj/moc_dflatbutton.o .obj/moc_dfontchooser.o .obj/moc_dimagebutton.o .obj/moc_doptionaldialog.o .obj/moc_dradiobuttongroup.o .obj/moc_drulerbase.o .obj/moc_dtabdialog.o .obj/moc_dtabwidget.o .obj/moc_dtip.o .obj/moc_dtoolbox.o .obj/moc_dtreelistwidget.o .obj/moc_dvhbox.o .obj/moc_dwidgetlistview.o .obj/moc_dwizard.o .obj/moc_dxyspinbox.o .obj/moc_kseparator.o .obj/moc_daction.o .obj/moc_dactionmanager.o .obj/moc_dmainwindow.o .obj/moc_dmdiwindow.o .obj/moc_ddatepicker.o .obj/moc_ddatetable.o .obj/moc_dcommand.o .obj/moc_dtreewidgetsearchline.o .obj/moc_dbuttonbar.o .obj/moc_dstackedmainwindow.o .obj/moc_dtabbedmainwindow.o .obj/moc_dtoolview.o .obj/moc_dviewbutton.o .obj/moc_dworkspacemainwindow.o .obj/qrc_images.o -L/usr/lib -laspell -pthread -lgstreamer-0.10 -lgobject-2.0 -lgmodule-2.0 -ldl -lgthread-2.0 -lrt -lxml2 -lglib-2.0 -lQtXml -lQtGui -lQtCore -lpthread
.obj/dapplication.o: In function `DApplication::DApplication(int&, char**)':
dapplication.cpp:(.text+0x15d6): undefined reference to `DDebug::DDebug(DebugType)'
dapplication.cpp:(.text+0x16bf): undefined reference to `DDebug::~DDebug()'
dapplication.cpp:(.text+0x17dc): undefined reference to `DDebug::~DDebug()'
.obj/dapplication.o: In function `DApplication::~DApplication()':
dapplication.cpp:(.text+0x1864): undefined reference to `DDebug::DDebug(DebugType)'
dapplication.cpp:(.text+0x194d): undefined reference to `DDebug::~DDebug()'
dapplication.cpp:(.text+0x1952): undefined reference to `DConfig::instance()'
dapplication.cpp:(.text+0x195a): undefined reference to `DConfig::sync()'
dapplication.cpp:(.text+0x1a0f): undefined reference to `DDebug::~DDebug()'
.obj/dapplication.o: In function `DApplication::~DApplication()':
dapplication.cpp:(.text+0x1aa4): undefined reference to `DDebug::DDebug(DebugType)'
dapplication.cpp:(.text+0x1b8d): undefined reference to `DDebug::~DDebug()'
dapplication.cpp:(.text+0x1b92): undefined reference to `DConfig::instance()'
dapplication.cpp:(.text+0x1b9a): undefined reference to `DConfig::sync()'
dapplication.cpp:(.text+0x1c5b): undefined reference to `DDebug::~DDebug()'