git.ozlabs.org Git - petitboot/blob - version.sh

   1 #! /bin/bash
   2 #
   3 # version.sh: create a version string for use by configure.ac
   4
   5 version=
   6 datefmt='%Y%m%d'
   7
   8 export GIT_DIR=$(dirname $0)/.git/
   9
  10 if head=$(git rev-parse --short=8 --verify HEAD 2>/dev/null); then
  11
  12         suffix=''
  13         # Add a '-dirty' suffix for uncommitted changes.
  14         if git diff-index HEAD | read dummy; then
  15                 suffix=-dirty
  16         fi
  17
  18         if tag=$(git describe --tags --exact-match 2>/dev/null); then
  19                 # use a tag; remove any 'v' prefix from v<VERSION> tags
  20                 tag=${tag#v}
  21                 version=$(printf "%s%s" ${tag} ${suffix})
  22         else
  23                 # Use the git commit revision for the package version, and add
  24                 # a date prefix for easy comparisons.
  25                 date=$(git log --pretty=format:"%ct" -1 HEAD)
  26                 version=$(printf "%($datefmt)T.g%s%s" ${date} ${head} ${suffix})
  27         fi
  28 else
  29         # Check if a specific version is set, eg: by buildroot
  30         if [ ! -z "$PETITBOOT_VERSION" ];
  31         then
  32                 # Full git hash
  33                 len=$(echo -n "${PETITBOOT_VERSION}" | wc -c)
  34                 if [[ ${len} == 40 ]]; then
  35                         version=`echo -n ${PETITBOOT_VERSION} | \
  36                                 sed "s/^\([0-9a-f]\{7\}\).*/\1/;"`
  37                 else
  38                         version="$PETITBOOT_VERSION"
  39                 fi
  40         else
  41                 # Default to current date and time.
  42                 version="$(date +dev.$datefmt)"
  43         fi
  44 fi
  45
  46 echo $version