version.sh

   1 #!/bin/bash
   2 #
   3 # determine-version -- report a useful version for releases
   4 #
   5 # Copyright 2008, Aron Griffis <agriffis@n01se.net>
   6 # Copyright 2008, Oracle
   7 # Released under the GNU GPLv2
   8
   9 v="Btrfs v0.17"
  10
  11 which git &> /dev/null
  12 if [ $? == 0 -a -d .git ]; then
  13     if head=`git rev-parse --verify HEAD 2>/dev/null`; then
  14         if tag=`git describe --tags 2>/dev/null`; then
  15             v="$tag"
  16         fi
  17
  18         # Are there uncommitted changes?
  19         git update-index --refresh --unmerged > /dev/null
  20         if git diff-index --name-only HEAD | grep -v "^scripts/package" \
  21             | read dummy; then
  22             v="$v"-dirty
  23         fi
  24     fi
  25 fi
  26
  27 which hg &> /dev/null
  28 if [ $? == 0 -a -d .hg ]; then
  29         last=$(hg tags | grep -m1 -o '^v[0-9.]\+')
  30
  31         # now check if the repo has commits since then...
  32         if [[ $(hg id -t) == $last || \
  33             $(hg di -r "$last:." | awk '/^diff/{print $NF}' | sort -u) == .hgtags ]]
  34         then
  35             # check if it's dirty
  36             if [[ $(hg id | cut -d' ' -f1) == *+ ]]; then
  37                 v=$last+
  38             else
  39                 v=$last
  40             fi
  41         else
  42             # includes dirty flag
  43             v=$last+$(hg id -i)
  44         fi
  45 fi
  46
  47 echo "#ifndef __BUILD_VERSION" > .build-version.h
  48 echo "#define __BUILD_VERSION" >> .build-version.h
  49 echo "#define BTRFS_BUILD_VERSION \"Btrfs $v\"" >> .build-version.h
  50 echo "#endif" >> .build-version.h
  51
  52 diff -q version.h .build-version.h >& /dev/null
  53
  54 if [ $? == 0 ]; then
  55     rm .build-version.h
  56     exit 0
  57 fi
  58
  59 mv .build-version.h version.h