[gnome-control-center] datetime: Don't run gdbus command twice

[Bastien Nocera <hadess src gnome org>]

commit dc92ae2fe86636f7ecf608f8c72f1de7f216a13f
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Jan 23 13:51:18 2012 +0000

    datetime: Don't run gdbus command twice

 panels/datetime/Makefile.am |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/panels/datetime/Makefile.am b/panels/datetime/Makefile.am
index 2c822ca..65ee027 100644
--- a/panels/datetime/Makefile.am
+++ b/panels/datetime/Makefile.am
@@ -110,7 +110,8 @@ ccpanels_LTLIBRARIES = libdate_time.la
 #		 > timedated1-interface.xml
 
 dbus_built_sources = timedated.c timedated.h
-$(dbus_built_sources) : Makefile.am timedated1-interface.xml
+timedated.c: timedated.h
+timedated.h: Makefile.am timedated1-interface.xml
 	gdbus-codegen						\
 		--interface-prefix org.freedesktop.		\
 		--generate-c-code timedated			\
@@ -155,4 +156,6 @@ EXTRA_DIST =				\
 	timedated1-interface.xml	\
 	$(polkit_in_files)
 
+BUILT_SOURCES = $(dbus_built_sources)
+
 -include $(top_srcdir)/git.mk