AC_ARG_ENABLE(${short}, AC_HELP_STRING([--enable-${short}],
[enable ${name} support [default=yes]]),
[HW_${upper}="$enableval"],
AC_ARG_ENABLE(${short}, AC_HELP_STRING([--enable-${short}],
[enable ${name} support [default=yes]]),
[HW_${upper}="$enableval"],