--- gambas-2.8.1.ebuild	2008-08-22
+++ gambas-2.8.1.ebuild	2008-08-27
@@ -48,6 +48,10 @@ 
 	built_with_use sys-devel/gcc libffi \
 	|| die "gcc needs to be build with the USE flag libffi"
 
+	if ! use qt3; then
+	use gtk && die "GTK support depends on Qt being enabled"
+	fi
+
 	if ! use gtk; then
 	use svg && die "SVG support depends on GTK being enabled"
 	fi