Index: Mk/Uses/gnome.mk
===================================================================
--- Mk/Uses/gnome.mk	(revision 465432)
+++ Mk/Uses/gnome.mk	(working copy)
@@ -190,6 +190,7 @@
 
 glib20_LIB_DEPENDS=	libglib-2.0.so:devel/glib20 \
 					libintl.so:devel/gettext-runtime
+glib20_BUILD_DEPENDS=	${LOCALBASE}/libdata/pkgconfig/glib-2.0.pc:devel/glib20
 
 atk_LIB_DEPENDS=	libatk-1.0.so:accessibility/atk
 atk_USE_GNOME_IMPL=	glib20