Questions about building gtk-qt-engine (resubmit)

The package builds and seems to contain the expected files. Package installs and appears in KControl. Yet many warning messages. Log attached. (Oops I forgot to attach the log!) =========================================================== -- WARNING: you are using the obsolete 'PKGCONFIG' macro use FindPkgConfig Is this warning important? Is there anything I can do about this warning? =========================================================== -- PKGCONFIG() indicates that libbonoboui-2.0 is not installed (install the package which contains libbonoboui-2.0.pc if you want to support this feature) -- bonoboui not found. Some features of the theme engine will not work as intended. There is a non-stock build script available for libbonoboui. The dependency chain includes libgnome, libbonobo, libgnomecanvas, gnome-vfs, GConf2, gnome-mime-data, avahi, ORBit2. Possibly more. To many Slackers that is considered a lot of cruft. Therefore, exactly what features are lost by not having libbonoboui installed when building gtk-qt-engine? =========================================================== There are many "warning: unused parameter" messages. =========================================================== /dev/shm/applications/gtk-qt-engine/src/qt_qt_wrapper.cpp: In function 'void drawArrow(GdkWindow*, GtkStyle*, GtkStateType, GtkArrowType, int, int, int, int)': /dev/shm/applications/gtk-qt-engine/src/qt_qt_wrapper.cpp:1698: warning: 'element' may be used uninitialized in this function [I built the package in tmpfs, hence the reference to /dev/shm. I am focusing on the warning messages.] Darrell