version.sh

   1 #!/bin/sh
   2
   3 # check for SVN revision number
   4 revision=$(cat snapshot_version 2> /dev/null)
   5 test $revision || revision=$(cd "$1" && LC_ALL=C svn info 2> /dev/null | grep Revision | cut -d' ' -f2)
   6 test $revision || revision=$(cd "$1" && grep revision .svn/entries 2>/dev/null | cut -d '"' -f2)
   7 test $revision || revision=$(cd "$1" && sed -n -e '/^dir$/{n;p;q}' .svn/entries 2>/dev/null)
   8 test $revision && revision=SVN-r$revision
   9
  10 # check for git short hash
  11 if ! test $revision; then
  12     revision=$(cd "$1" && git log -1 --pretty=format:%h)
  13     test $revision && revision=git-$revision
  14 fi
  15
  16 # no version number found
  17 test $revision || revision=UNKNOWN
  18
  19 test -n "$3" && revision=$revision-$3
  20
  21 NEW_REVISION="#define FFMPEG_VERSION \"$revision\""
  22 OLD_REVISION=$(cat version.h 2> /dev/null)
  23
  24 # Update version.h only on revision changes to avoid spurious rebuilds
  25 if test "$NEW_REVISION" != "$OLD_REVISION"; then
  26     echo "$NEW_REVISION" > "$2"
  27 fi