#!/bin/sh
-svn_revision=`cd "$1" && svn info 2> /dev/null | grep Revision | cut -d' ' -f2`
-test $svn_revision || svn_revision=UNKNOWN
+revision=$(cd "$1" && cat snapshot_version 2> /dev/null)
+test "$revision" && revision=SVN-r$revision
-NEW_REVISION="#define FFMPEG_VERSION \"SVN-r$svn_revision\""
-OLD_REVISION=`cat version.h 2> /dev/null`
+# check for git short hash
+if ! test "$revision"; then
+ revision=$(cd "$1" && git describe --tags --match N 2> /dev/null)
+ test "$revision" && revision=git-$revision
+fi
+
+# no revision number found
+test "$revision" || revision=UNKNOWN
+
+# releases extract the version number from the VERSION file
+version=$(cd "$1" && cat VERSION 2> /dev/null)
+test "$version" || version=$revision
+
+test -n "$3" && version=$version-$3
+
+if [ -z "$2" ]; then
+ echo "$version"
+ exit
+fi
+
+NEW_REVISION="#define FFMPEG_VERSION \"$version\""
+OLD_REVISION=$(cat version.h 2> /dev/null)
# Update version.h only on revision changes to avoid spurious rebuilds
if test "$NEW_REVISION" != "$OLD_REVISION"; then
- echo "$NEW_REVISION" > version.h
+ echo "$NEW_REVISION" > "$2"
fi