version.sh

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