build: Fix out-of-tree build of widget-factory demo application

https://bugzilla.gnome.org/show_bug.cgi?id=674192

diff --git a/demos/widget-factory/Makefile.am b/demos/widget-factory/Makefile.am
index 39b52312e448a7533da154d189b7986a95510dc5..8989139570f6cef78f3cdecc6433a5a405dbe4d9 100644 (file)
--- a/demos/widget-factory/Makefile.am
+++ b/demos/widget-factory/Makefile.am
@@ -22,7 +22,7 @@ gtk3_widget_factory_LDADD = \
        $(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)
+widget_factory_resources.c: widget-factory.gresource.xml $(shell $(GLIB_COMPILE_RESOURCES) --sourcedir=$(srcdir) --generate-dependencies $(srcdir)/widget-factory.gresource.xml)
        $(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir) --generate-source $<
 
 EXTRA_DIST += \