Add a DKP_CHECK_VERSION macro which we can use in client tools

configure.ac

@@ -9,6 +9,9 @@ AM_MAINTAINER_MODE
 # enable nice build output on automake1.11
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
 
+# use this in dkp-version.h
+AC_SUBST(VERSION)
+
 # libtool versioning - this applies to devkit-power-gobject
 #
 # See http://sources.redhat.com/autobook/autobook/autobook_91.html#SEC91 for details
@@ -187,6 +190,7 @@ doc/man/Makefile
 doc/dbus/Makefile
 policy/Makefile
 devkit-power-gobject/Makefile
+devkit-power-gobject/dkp-version.h
 po/Makefile.in
 ])
 

devkit-power-gobject/.gitignore

@@ -8,4 +8,5 @@
 *.gcov
 *.gcda
 *.gcno
+dkp-version.h
 

devkit-power-gobject/Makefile.am

@@ -14,6 +14,7 @@ lib_LTLIBRARIES =						\
 libdevkit_power_includedir = $(includedir)/DeviceKit-power/devkit-power-gobject
 libdevkit_power_include_HEADERS =				\
 	devicekit-power.h					\
+	dkp-version.h						\
 	dkp-client.h						\
 	dkp-device.h						\
 	dkp-wakeups.h						\
@@ -25,6 +26,7 @@ libdevkit_power_include_HEADERS =				\
 
 libdevkit_power_gobject_la_SOURCES =				\
 	devicekit-power.h					\
+	dkp-version.h						\
 	dkp-client.c						\
 	dkp-client.h						\
 	dkp-device.c						\
@@ -53,6 +55,9 @@ libdevkit_power_gobject_la_LDFLAGS =				\
 	-no-undefined						\
 	-export-symbols-regex '^dkp_.*'
 
+EXTRA_DIST =							\
+	dkp-version.h.in
+
 clean-local:
 	rm -f *~
 

devkit-power-gobject/devicekit-power.h

@@ -28,6 +28,7 @@
 
 #define __DEVICEKIT_POWER_H_INSIDE__
 
+#include <devkit-power-gobject/dkp-version.h>
 #include <devkit-power-gobject/dkp-client.h>
 #include <devkit-power-gobject/dkp-device.h>
 #include <devkit-power-gobject/dkp-enum.h>

devkit-power-gobject/dkp-version.h.in

@@ -0,0 +1,39 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2009 Richard Hughes <richard@hughsie.com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#if !defined (__DEVICEKIT_POWER_H_INSIDE__) && !defined (DKP_COMPILATION)
+#error "Only <devicekit-power.h> can be included directly."
+#endif
+
+#ifndef __DKP_VERSION_H
+#define __DKP_VERSION_H
+
+/* compile time version
+ */
+#define DKP_COMPILE_VERSION				(@VERSION@)
+
+/* check whether a the version is above the compile time version.
+ */
+#define DKP_CHECK_VERSION(ver) \
+	(DKP_COMPILE_VERSION > (ver) || \
+	 (DKP_COMPILE_VERSION == (ver)))
+
+#endif /* __DKP_VERSION_H */