1028     AC_MSG_RESULT([yes])

  1029 else

  1030     AC_MSG_RESULT([no])

  1031 fi

  1032 

  1033 #------------------------------------------------------------------------------

  1034 # use loop control registers to open slave ports

  1035 #------------------------------------------------------------------------------

  1036 

  1037 AC_MSG_CHECKING([whether to use loop control registers])

  1038 

  1039 AC_ARG_ENABLE([loop-control],

  1040     AS_HELP_STRING([--enable-loop-control],

  1041                    [Use loop control registers (default: no)]),

  1042     [

  1043         case "${enableval}" in

  1044             yes) loopctl=1

  1045                 ;;

  1046             no) loopctl=0

  1047                 ;;

  1048             *) AC_MSG_ERROR([Invalid value for --enable-loop-control])

  1049                 ;;

  1050         esac

  1051     ],

  1052     [loopctl=0]

  1053 )

  1054 

  1055 if test "x${loopctl}" = "x1"; then

  1056     AC_DEFINE([EC_LOOP_CONTROL], [1], [Use loop control registers])