version.sh

   1 #!/bin/sh
   2
   3 test "$1" && extra="-$1"
   4
   5 # Extract revision number from file used by daily tarball snapshots
   6 # or from "git describe" output
   7 git_revision=$(cat snapshot_version 2> /dev/null)
   8 test $git_revision || test ! -d .git || git_revision=`git describe --match "v[0-9]*" --always`
   9 git_revision=$(expr "$git_revision" : v*'\(.*\)')
  10 test $git_revision || git_revision=UNKNOWN
  11
  12 # releases extract the version number from the VERSION file
  13 version=$(cat VERSION 2> /dev/null)
  14 test $version || version=$git_revision
  15
  16 NEW_REVISION="#define VERSION \"${version}${extra}\""
  17 OLD_REVISION=$(head -n 1 version.h 2> /dev/null)
  18 TITLE='#define MP_TITLE "%s "VERSION" (C) 2000-2011 MPlayer Team\n"'
  19
  20 # Update version.h only on revision changes to avoid spurious rebuilds
  21 if test "$NEW_REVISION" != "$OLD_REVISION"; then
  22     cat <<EOF > version.h
  23 $NEW_REVISION
  24 $TITLE
  25 EOF
  26 fi