[gtk+] Set BUILT_SOURCES

[Matthias Clasen <matthiasc src gnome org>]

commit c525fe27f34dc1fbd6bf6efbe7ad51d467665d59
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Feb 9 09:10:50 2012 -0500

    Set BUILT_SOURCES

 demos/widget-factory/Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/demos/widget-factory/Makefile.am b/demos/widget-factory/Makefile.am
index 80b81fb..452e4df 100644
--- a/demos/widget-factory/Makefile.am
+++ b/demos/widget-factory/Makefile.am
@@ -6,6 +6,9 @@ gtk3_widget_factory_SOURCES = \
 	widget-factory.c	\
 	widget_factory_resources.c
 
+BUILT_SOURCES = \
+	widget_factory_resources.c
+
 gtk3_widget_factory_DEPENDENCIES = \
 	$(top_builddir)/gtk/libgtk-3.la