Extract superiotool version number from the svn revision numbers of the
*.c and superiotool.h files.

Signed-off-by: Ulf Jordan <jordan@chalmers.se>

Index: fintek.c
===================================================================
--- fintek.c	(revision 2828)
+++ fintek.c	(arbetskopia)
@@ -19,6 +19,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 #define DEVICE_ID_BYTE1_REG	0x20
Index: winbond.c
===================================================================
--- winbond.c	(revision 2828)
+++ winbond.c	(arbetskopia)
@@ -19,6 +19,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 #define DEVICE_ID_REG_OLD	0x09
Index: ite.c
===================================================================
--- ite.c	(revision 2828)
+++ ite.c	(arbetskopia)
@@ -19,6 +19,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 #define CHIP_ID_BYTE1_REG	0x20
Index: nsc.c
===================================================================
--- nsc.c	(revision 2828)
+++ nsc.c	(arbetskopia)
@@ -19,6 +19,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 #define CHIP_ID_REG	0x20	/* Super I/O ID (SID) / family */
Index: superiotool.c
===================================================================
--- superiotool.c	(revision 2828)
+++ superiotool.c	(arbetskopia)
@@ -20,6 +20,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 /* Command line options. */
@@ -167,12 +174,7 @@
 
 static void print_version(void)
 {
-	char tmp[80];
-
-	strncpy((char *)&tmp,
-		(const char *)&SUPERIOTOOL_VERSION[6],
-		strlen(SUPERIOTOOL_VERSION) - 8);
-	printf("superiotool r%s\n", (char *)&tmp);
+	printf("superiotool r" SUPERIOTOOL_VERSION "\n");
 }
 
 int main(int argc, char *argv[])
Index: ali.c
===================================================================
--- ali.c	(revision 2828)
+++ ali.c	(arbetskopia)
@@ -18,6 +18,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 #define DEVICE_ID_BYTE1_REG	0x20
Index: smsc.c
===================================================================
--- smsc.c	(revision 2828)
+++ smsc.c	(arbetskopia)
@@ -18,6 +18,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+
 #include "superiotool.h"
 
 #define DEVICE_ID_REG_OLD	0x0d
Index: superiotool.h
===================================================================
--- superiotool.h	(revision 2828)
+++ superiotool.h	(arbetskopia)
@@ -29,7 +29,13 @@
 #include <getopt.h>
 #include <sys/io.h>
 
-#define SUPERIOTOOL_VERSION "$Rev$"
+/*
+ * Each superiotool source file should have a revision comment for
+ * version tracking. The largest revision is extracted by the build
+ * system into version.h
+ * $Rev$
+ */
+#include "version.h"
 
 #define USAGE "Usage: superiotool [-d] [-D] [-V] [-v] [-h]\n\n\
   -d | --dump            Dump Super I/O registers\n\
Index: Makefile
===================================================================
--- Makefile	(revision 2828)
+++ Makefile	(arbetskopia)
@@ -32,6 +32,14 @@
 
 all: $(PROGRAM)
 
+superiotool.o: version.h
+
+version.h: *.c superiotool.h
+	sed -ne 's/.*Rev: \([0-9]*\) .*/\1/p' $^ \
+	| sort -n \
+	| tail -1 \
+	| sed 's/.*/#define SUPERIOTOOL_VERSION "&"/' >$@
+
 $(PROGRAM): $(OBJS) superiotool.h
 	$(CC) $(CFLAGS) -o $(PROGRAM) $(OBJS)
 
@@ -39,7 +47,7 @@
 	$(INSTALL) $(PROGRAM) $(PREFIX)/bin
 
 clean:
-	rm -f $(PROGRAM) *.o
+	rm -f $(PROGRAM) *.o version.h
 
 .PHONY: all install clean