Generate version tag based on file modification date if git is not present

genver.sh

@@ -7,27 +7,34 @@ else
 	QUIET=0
 fi
 
+if ! `(git status | grep -q "On branch") 2> /dev/null`; then
+        # If we don't have git, we can't work out what
+        # version this is. It must have been downloaded as a
+        # zip file. Github creates the zip file with all
+        # files dated from the last change: use the
+        # Makefile's modification time as a release number
+	release=zip-`stat -c "%y" Makefile | sed 's/ .*//'`
+fi
+
 if head=`git rev-parse --verify HEAD 2>/dev/null`; then
-
-	if [ $QUIET -ne 1 ]; then
-		printf "#ifndef _VERSION_H_ \n"
-		printf "#define _VERSION_H_ \n\n"
-		printf "#define VERSION \""
-	fi
-
 	# generate the version info based on the tag
-	(git describe --tags || git --describe || git describe --all --long) \
-		2>/dev/null | tr -d '\n'
+	release=`(git describe --tags || git --describe || git describe --all --long) \
+		2>/dev/null | tr -d '\n'`
 
 	# Are there uncommitted changes?
 	git update-index --refresh --unmerged > /dev/null
 	if git diff-index --name-only HEAD | grep -v "^scripts/package" \
 	    | read dummy; then
-		printf '%s' -dirty
-	fi
-
-	if [ $QUIET -ne 1 ]; then
-		printf "\"\n"
-		printf "\n#endif\n"
+		release="$release-dirty"
 	fi
 fi
+
+
+if [ $QUIET -ne 1 ]; then
+	printf "#ifndef _VERSION_H_ \n"
+	printf "#define _VERSION_H_ \n\n"
+	printf "#define VERSION \"$release\"\n"
+	printf "#endif\n"
+else
+	printf "$release\n"
+fi