Otherwise we fail to link, seeing this:
/usr/bin/ld: gtk3_widget_factory-widget-factory.o: undefined reference
to symbol 'gdk_pixbuf_new_from_resource'
gtk3_widget_factory_LDADD = \
$(top_builddir)/gdk/libgdk-3.la \
- $(top_builddir)/gtk/libgtk-3.la
+ $(top_builddir)/gtk/libgtk-3.la \
+ $(GTK_DEP_LIBS)
widget_factory_resources.c: widget-factory.gresource.xml $(shell $(GLIB_COMPILE_RESOURCES) --generate-dependencies $(srcdir)/widget-factory.gresource.xml)
$(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir) --generate-source $<