Add GIT version information (commid ID) to untagged U-Boot versions

As done in the linux kernel, the U-Boot version (U_BOOT_VERSION)
of all unreleased (untagged) U-Boot images will be automatically
extended upon compiletime with a part of the GIT commit ID and
possibly with "dirty" if uncommited changes are detected.

Here an example for the resulting version:
"U-Boot 1.1.4-g3457ac18-dirty"

The version is now maintained in the toplevel Makefile and the
version headers are autogenerated.

Patch by Stefan Roese, 9 Feb 2006

4 files changed, 57 insertions, 6 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 394cb14faa..44989b849d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,21 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Add GIT version information (commid ID) to untagged U-Boot versions
+
+  As done in the linux kernel, the U-Boot version (U_BOOT_VERSION)
+  of all unreleased (untagged) U-Boot images will be automatically
+  extended upon compiletime with a part of the GIT commit ID and
+  possibly with "dirty" if uncommited changes are detected.
+
+  Here an example for the resulting version:
+  "U-Boot 1.1.4-g3457ac18-dirty"
+
+  The version is now maintained in the toplevel Makefile and the
+  version headers are autogenerated.
+
+  Patch by Stefan Roese, 9 Feb 2006
+
 * Update default environment for INKA4x00 board.
 
 * Convert CPCI750 to use common CFI flash driver
diff --git a/Makefile b/Makefile
index 9305cab38b..08a8e46708 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 #
-# (C) Copyright 2000-2005
+# (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
@@ -21,6 +21,13 @@
 # MA 02111-1307 USA
 #
 
+VERSION = 1
+PATCHLEVEL = 1
+SUBLEVEL = 4
+EXTRAVERSION =
+U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+VERSION_FILE = include/version_autogenerated.h
+
 HOSTARCH := $(shell uname -m | \
 	sed -e s/i.86/i386/ \
 	    -e s/sun4u/sparc64/ \
@@ -154,14 +161,14 @@ u-boot.bin:	u-boot
 u-boot.img:	u-boot.bin
 		./tools/mkimage -A $(ARCH) -T firmware -C none \
 		-a $(TEXT_BASE) -e 0 \
-		-n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' include/version.h | \
+		-n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' $(VERSION_FILE) | \
 			sed -e 's/"[	 ]*$$/ for $(BOARD) board"/') \
 		-d $< $@
 
 u-boot.dis:	u-boot
 		$(OBJDUMP) -d $< > $@
 
-u-boot:		depend $(SUBDIRS) $(OBJS) $(LIBS) $(LDSCRIPT)
+u-boot:		depend version $(SUBDIRS) $(OBJS) $(LIBS) $(LDSCRIPT)
 		UNDEF_SYM=`$(OBJDUMP) -x $(LIBS) |sed  -n -e 's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
 		$(LD) $(LDFLAGS) $$UNDEF_SYM $(OBJS) \
 			--start-group $(LIBS) --end-group $(PLATFORM_LIBS) \
@@ -173,6 +180,13 @@ $(LIBS):
 $(SUBDIRS):
 		$(MAKE) -C $@ all
 
+version:
+		@echo -n "#define U_BOOT_VERSION \"U-Boot " > $(VERSION_FILE); \
+		echo -n "$(U_BOOT_VERSION)" >> $(VERSION_FILE); \
+		echo -n $(shell $(CONFIG_SHELL) $(TOPDIR)/tools/setlocalversion \
+			 $(TOPDIR)) >> $(VERSION_FILE); \
+		echo "\"" >> $(VERSION_FILE)
+
 gdbtools:
 		$(MAKE) -C tools/gdb || exit 1
 
@@ -1838,7 +1852,7 @@ clobber:	clean
 		-o -name '*.srec' -o -name '*.bin' -o -name u-boot.img \) \
 		-print0 \
 		| xargs -0 rm -f
-	rm -f $(OBJS) *.bak tags TAGS
+	rm -f $(OBJS) *.bak tags TAGS include/version_autogenerated.h
 	rm -fr *.*~
 	rm -f u-boot u-boot.map u-boot.hex $(ALL)
 	rm -f tools/crc32.c tools/environment.c tools/env/crc32.c
diff --git a/include/version.h b/include/version.h
index 4f8b498cf3..b56d2e9900 100644
--- a/include/version.h
+++ b/include/version.h
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2000-2003
+ * (C) Copyright 2000-2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * See file CREDITS for list of people who contributed to this
@@ -24,6 +24,6 @@
 #ifndef	__VERSION_H__
 #define	__VERSION_H__
 
-#define	U_BOOT_VERSION	"U-Boot 1.1.4"
+#include "version_autogenerated.h"
 
 #endif	/* __VERSION_H__ */
diff --git a/tools/setlocalversion b/tools/setlocalversion
new file mode 100755
index 0000000000..9a23825218
--- /dev/null
+++ b/tools/setlocalversion
@@ -0,0 +1,22 @@
+#!/bin/sh
+# Print additional version information for non-release trees.
+
+usage() {
+	echo "Usage: $0 [srctree]" >&2
+	exit 1
+}
+
+cd "${1:-.}" || usage
+
+# Check for git and a git repo.
+if head=`git rev-parse --verify HEAD 2>/dev/null`; then
+	# Do we have an untagged version?
+	if  [ "`git name-rev --tags HEAD`" = "HEAD undefined" ]; then
+		printf '%s%s' -g `echo "$head" | cut -c1-8`
+	fi
+
+	# Are there uncommitted changes?
+	if git diff-files | read dummy; then
+		printf '%s' -dirty
+	fi
+fi