--- a/nvramtool/common.c
+++ b/nvramtool/common.c
@@ -34,7 +34,7 @@
 const char prog_name[] = "nvramtool";
 
 /* version of this program */
-const char prog_version[] = "2.1";
+const char prog_version[] = "2.1 (r" NVRAMTOOL_REVISION ")";
 
 /****************************************************************************
  * get_line_from_file
--- a/nvramtool/Makefile
+++ b/nvramtool/Makefile
@@ -20,10 +20,15 @@
 
 all: dep $(PROGRAM)
 
+SVNDEF := -D'NVRAMTOOL_REVISION="$(shell basename `cd ..;pwd`|cut -c17-)"'
+
 $(PROGRAM): $(OBJS)
 	$(CC) -o $(PROGRAM) $(OBJS) $(LDFLAGS)
 	$(STRIP) $(STRIP_ARGS) $(PROGRAM)
 
+common.o: common.c
+	$(CC) -c $(CFLAGS) $(SVNDEF) $< -o $@
+
 clean:
 	rm -f $(PROGRAM) *.o