GIT-VERSION-GEN

   1 #!/bin/sh
   2
   3 GVF=GIT-VERSION-FILE
   4 DEF_VER=v0.5.GIT
   5
   6 LF='
   7 '
   8
   9 # First try git-describe, then see if there is a version file
  10 # (included in release tarballs), then default
  11 if VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
  12    case "$VN" in
  13    *$LF*) (exit 1) ;;
  14    v[0-9]*) : happy ;;
  15    esac
  16 then
  17         VN=$(echo "$VN" | sed -e 's/-/./g');
  18 elif test -f version
  19 then
  20         VN=$(cat version) || VN="$DEF_VER"
  21 else
  22         VN="$DEF_VER"
  23 fi
  24
  25 VN=$(expr "$VN" : v*'\(.*\)')
  26
  27 dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
  28 case "$dirty" in
  29 '')
  30         ;;
  31 *)
  32         VN="$VN-dirty" ;;
  33 esac
  34
  35 if test -r $GVF
  36 then
  37         VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)
  38 else
  39         VC=unset
  40 fi
  41 test "$VN" = "$VC" || {
  42         echo >&2 "GIT_VERSION = $VN"
  43         echo "GIT_VERSION = $VN" >$GVF
  44 }
  45
  46