MarlinFirmware/LinuxAddons/bin/generate_version_header_for_marlin

#!/usr/bin/env bash
# generate_version_header_for_marlin

DIR="$1" export DIR
OUTFILE="$2" export OUTFILE
echo "/* This file is automatically generated by an Arduino hook" >"$OUTFILE"
echo " * Do not manually edit it" >>"$OUTFILE"
echo " * It does not get committed to the repository" >>"$OUTFILE"
echo " */" >>"$OUTFILE"
echo "" >>"$OUTFILE"

echo "#define BUILD_UNIX_DATETIME" `date +%s` >>"$OUTFILE"
echo "#define STRING_DISTRIBUTION_DATE" `date '+"%Y-%m-%d %H:%M"'` >>"$OUTFILE"
( set +e
  cd "$DIR"
  BRANCH=`git symbolic-ref -q --short HEAD`
  if [ "x$BRANCH" == "x" ] ; then
    BRANCH=""
  elif [ "x$BRANCH" == "xDevelopment" ] ; then
    BRANCH=" dev"
  else
    BRANCH=" $BRANCH"
  fi
  VERSION=`git describe --tags --first-parent 2>/dev/null` 
  if [ "x$VERSION" != "x" ] ; then
    echo "#define BUILD_VERSION \"$VERSION\"" | sed "s/-/$BRANCH-/" >>"$OUTFILE"
  fi
  URL=`git config --local --get remote.origin.url | sed "sx.*github.com:xhttps://github.com/x" | sed "sx\.gitx/x"`
  if [ "x$URL" != "x" ] ; then
    echo "#define SOURCE_CODE_URL  \""$URL"\"" >>"$OUTFILE"
    echo "// Deprecated URL definition" >>"$OUTFILE"
    echo "#define FIRMWARE_URL  \""$URL"\"" >>"$OUTFILE"
  fi
)