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"
   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: $0 <filename> <srcroot>"
  17     exit 1
  18 fi
  19
  20 DESC=""
  21 SUFFIX=""
  22 if [ -e "$(which git 2>/dev/null)" -a "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = "true" ]; then
  23     # clean 'dirty' status of touched files that haven't been modified
  24     git diff >/dev/null 2>/dev/null
  25
  26     # if latest commit is tagged and not dirty, then override using the tag name
  27     RAWDESC=$(git describe --abbrev=0 2>/dev/null)
  28     if [ "$(git rev-parse HEAD)" = "$(git rev-list -1 $RAWDESC 2>/dev/null)" ]; then
  29         git diff-index --quiet HEAD -- && DESC=$RAWDESC
  30     fi
  31
  32     # otherwise generate suffix from git, i.e. string like "59887e8-dirty"
  33     SUFFIX=$(git rev-parse --short HEAD)
  34     git diff-index --quiet HEAD -- || SUFFIX="$SUFFIX-dirty"
  35 fi
  36
  37 if [ -n "$DESC" ]; then
  38     NEWINFO="#define BUILD_DESC \"$DESC\""
  39 elif [ -n "$SUFFIX" ]; then
  40     NEWINFO="#define BUILD_SUFFIX $SUFFIX"
  41 else
  42     NEWINFO="// No build information available"
  43 fi
  44
  45 # only update build.h if necessary
  46 if [ "$INFO" != "$NEWINFO" ]; then
  47     echo "$NEWINFO" >"$FILE"
  48 fi