share/genbuild.sh

   1 #!/bin/sh
   2 # Copyright (c) 2012-2016 The Bitcoin Core developers
   3 # Distributed under the MIT software license, see the accompanying
   4 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 if [ $# -gt 1 ]; then
   7     cd "$2" || exit 1
   8 fi
   9 if [ $# -gt 0 ]; then
  10     FILE="$1"
  11     shift
  12     if [ -f "$FILE" ]; then
  13         INFO="$(head -n 1 "$FILE")"
  14     fi
  15 else
  16     echo "Usage: $0 <filename> <srcroot>"
  17     exit 1
  18 fi
  19
  20 git_check_in_repo() {
  21     ! { git status --porcelain -uall --ignored "$@" 2>/dev/null || echo '??'; } | grep -q '?'
  22 }
  23
  24 DESC=""
  25 SUFFIX=""
  26 if [ "${BITCOIN_GENBUILD_NO_GIT}" != "1" -a -e "$(which git 2>/dev/null)" -a "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = "true" ] && git_check_in_repo share/genbuild.sh; then
  27     # clean 'dirty' status of touched files that haven't been modified
  28     git diff >/dev/null 2>/dev/null
  29
  30     # if latest commit is tagged and not dirty, then override using the tag name
  31     RAWDESC=$(git describe --abbrev=0 2>/dev/null)
  32     if [ "$(git rev-parse HEAD)" = "$(git rev-list -1 $RAWDESC 2>/dev/null)" ]; then
  33         git diff-index --quiet HEAD -- && DESC=$RAWDESC
  34     fi
  35
  36     # otherwise generate suffix from git, i.e. string like "59887e8-dirty"
  37     SUFFIX=$(git rev-parse --short HEAD)
  38     git diff-index --quiet HEAD -- || SUFFIX="$SUFFIX-dirty"
  39 fi
  40
  41 if [ -n "$DESC" ]; then
  42     NEWINFO="#define BUILD_DESC \"$DESC\""
  43 elif [ -n "$SUFFIX" ]; then
  44     NEWINFO="#define BUILD_SUFFIX $SUFFIX"
  45 else
  46     NEWINFO="// No build information available"
  47 fi
  48
  49 # only update build.h if necessary
  50 if [ "$INFO" != "$NEWINFO" ]; then
  51     echo "$NEWINFO" >"$FILE"
  52 fi