version.sh

   1 #!/bin/sh
   2
   3 revision=$(cd "$1" && cat snapshot_version 2> /dev/null)
   4 test "$revision" && revision=SVN-r$revision
   5
   6 # check for git short hash
   7 if ! test "$revision"; then
   8     revision=$(cd "$1" && git describe --always 2> /dev/null)
   9     test "$revision" && revision=git-$revision
  10 fi
  11
  12 # no revision number found
  13 test "$revision" || revision=UNKNOWN
  14
  15 # releases extract the version number from the VERSION file
  16 version=$(cd "$1" && cat VERSION 2> /dev/null)
  17 test "$version" || version=$revision
  18
  19 test -n "$3" && version=$version-$3
  20
  21 if [ -z "$2" ]; then
  22     echo "$version"
  23     exit
  24 fi
  25
  26 NEW_REVISION="#define FFMPEG_VERSION \"$version\""
  27 OLD_REVISION=$(cat version.h 2> /dev/null)
  28
  29 # Update version.h only on revision changes to avoid spurious rebuilds
  30 if test "$NEW_REVISION" != "$OLD_REVISION"; then
  31     echo "$NEW_REVISION" > "$2"
  32 fi