#!/bin/bash

PAL_GIT_REVISION=$(git describe --tags 2> /dev/null)

if [ -z "$PAL_GIT_REVISION" ]; then
    PAL_GIT_REVISION=$(date -d @$(stat -c %Y ../.gitignore) +"%F %T")
fi

LINE="#define PAL_GIT_REVISION \"$PAL_GIT_REVISION\""
FILE="$(dirname $0)/../generated.h"

grep -F "$LINE" "$FILE" >/dev/null 2>&1
if [ $? -ne 0 ]; then
  echo Generating Git revision header... 1>&2
  echo "$LINE" > "$FILE"
fi

echo -ne