GIT-VERSION-GEN

   1 #!/bin/sh
   2
   3 GVF=GIT-VERSION-FILE
   4 DEF_VER=v2.20.GIT
   5
   6 LF='
   7 '
   8
   9 # First see if there is a version file (included in release tarballs),
  10 # then try git-describe, then default.
  11 if test -f version
  12 then
  13         VN=$(cat version) || VN="$DEF_VER"
  14 elif test -d ${GIT_DIR:-.git} -o -f .git &&
  15         VN=$(git describe --match "v[0-9]*" HEAD 2>/dev/null) &&
  16         case "$VN" in
  17         *$LF*) (exit 1) ;;
  18         v[0-9]*)
  19                 git update-index -q --refresh
  20                 test -z "$(git diff-index --name-only HEAD --)" ||
  21                 VN="$VN-dirty" ;;
  22         esac
  23 then
  24         VN=$(echo "$VN" | sed -e 's/-/./g');
  25 else
  26         VN="$DEF_VER"
  27 fi
  28
  29 VN=$(expr "$VN" : v*'\(.*\)')
  30
  31 if test -r $GVF
  32 then
  33         VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)
  34 else
  35         VC=unset
  36 fi
  37 test "$VN" = "$VC" || {
  38         echo >&2 "GIT_VERSION = $VN"
  39         echo "GIT_VERSION = $VN" >$GVF
  40 }