message: Check git submodule status before building
diff: printf "\tCurrent branch: $( git branch | grep \* )\n"
  printf "\n\tARCHITECTURE: ${ARCH}\n"
  + STALE_SUBMODS=$(( `git submodule status | grep -c "^[+\-]"` ))
  + if [ $STALE_SUBMODS -gt 0 ]; then
  + printf "\ngit submodules are not up to date\n"
  + printf "\tPlease run the command 'git submodule update --init --recursive'\n"
  + exit 1
  + fi
  +
  if [ $ARCH == "Linux" ]; then
  if [ ! -e /etc/os-release ]; then
  