[U-Boot] [PATCH v4] mkimage: add "-V" option to print version information

[Wolfgang Denk]

Signed-off-by: Wolfgang Denk <wd at denx.de>
---
v2: fix missing argument to printf() call.
v3: explain the magic "+ 7" offset into the version string
v3: avoid offset into U_BOOT_VERSION string completely and define
    a new PLAIN_VERSION variable instead; this has the benefit that it
    can be used in other places as well where such version information
    might be needed (fw_{set,print}env etc. comes to mind).

 Makefile        |    8 ++++++--
 tools/mkimage.c |    6 ++++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 05b404d..8721b59 100644
--- a/Makefile
+++ b/Makefile
@@ -414,8 +414,12 @@ $(U_BOOT_ONENAND):	$(ONENAND_IPL) $(obj)u-boot.bin
 		cat $(ONENAND_BIN) $(obj)u-boot.bin > $(obj)u-boot-onenand.bin
 
 $(VERSION_FILE):
-		@( printf '#define U_BOOT_VERSION "U-Boot %s%s"\n' "$(U_BOOT_VERSION)" \
-		 '$(shell $(TOPDIR)/tools/setlocalversion $(TOPDIR))' ) > $@.tmp
+		@( localvers='$(shell $(TOPDIR)/tools/setlocalversion $(TOPDIR))' ; \
+		   printf '#define PLAIN_VERSION "%s%s"\n' \
+		   	"$(U_BOOT_VERSION)" "$${localvers}" ; \
+		   printf '#define U_BOOT_VERSION "U-Boot %s%s"\n' \
+		   	"$(U_BOOT_VERSION)" "$${localvers}" ; \
+		) > $@.tmp
 		@( printf '#define CC_VERSION_STRING "%s"\n' \
 		 '$(shell $(CC) --version | head -n 1)' )>>  $@.tmp
 		@( printf '#define LD_VERSION_STRING "%s"\n' \
diff --git a/tools/mkimage.c b/tools/mkimage.c
index f5859d7..60f7263 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -23,6 +23,7 @@
 
 #include "mkimage.h"
 #include <image.h>
+#include <version.h>
 
 static void copy_file(int, const char *, int);
 static void usage(void);
@@ -246,6 +247,9 @@ main (int argc, char **argv)
 			case 'v':
 				params.vflag++;
 				break;
+			case 'V':
+				printf("mkimage version %s\n", PLAIN_VERSION);
+				exit(EXIT_SUCCESS);
 			case 'x':
 				params.xflag++;
 				break;
@@ -590,6 +594,8 @@ usage ()
 		params.cmdname);
 	fprintf (stderr, "       %s [-D dtc_options] -f fit-image.its fit-image\n",
 		params.cmdname);
+	fprintf (stderr, "       %s -V ==> print version information and exit\n",
+		params.cmdname);
 
 	exit (EXIT_FAILURE);
 }
-- 
1.7.4