gen-id.sh

   1 #!/bin/sh
   2 #
   3 # Create a build ID for this build.  If we're using a git tree,
   4 # generate an ID from "git describe", otherwise use the passed-in
   5 # timestamp.
   6 #
   7 # Usage: gen-id.sh version timestamp
   8 #
   9
  10 ver="$1"
  11 tim="$2"
  12 top=`dirname "$0"`
  13
  14 if test -n "$GIT_DIR" -o -d "$top"/.git -o -f "$top"/.git; then
  15     id="$(git describe)"
  16     if test -n "$id"; then
  17         if test x"$(echo "$id" | cut -d- -f1)" = xsyslinux; then
  18             id="$(echo "$id" | cut -d- -f2-)"
  19             if test x"$(echo "$id" | cut -d- -f1)" = x"$ver"; then
  20                 id="$(echo "$id" | cut -d- -f2-)"
  21             fi
  22         fi
  23     fi
  24     if test -n "$id"; then
  25         if test -n "$(git diff-index --name-only HEAD)"; then
  26             id="${id}"\*
  27         fi
  28     fi
  29 fi
  30 if test -z "$id"; then
  31   id="$tim"
  32 fi
  33 echo "$id"