dnl -*- mode: Autoconf; -*-

dnl -----------------------------------------------------------------------------------------
dnl checks for dot
dnl -----------------------------------------------------------------------------------------

AC_ARG_WITH(dot,
	    AS_HELP_STRING([--with-dot=DIR], [where the dot executable is located]),
	    tr_DOT_PATH="$withval",
            tr_DOT_PATH="$PATH")

AC_PATH_PROG([DOT_PATH], [dot], [], [$tr_DOT_PATH])

if test -n "$DOT_PATH";  then
  HAVE_DOT="YES"
  DOT_PATH=`dirname "$DOT_PATH"`
else
  HAVE_DOT="NO"
  DOT_PATH=""
fi

AC_SUBST(HAVE_DOT)

dnl -----------------------------------------------------------------------------------------
dnl informational output
dnl -----------------------------------------------------------------------------------------

if test "x$HAVE_DOT" = xyes;  then
  TOOL_INFO="$TOOL_INFO|DOT support: enabled ($DOT_PATH)"
else
  TOOL_INFO="$TOOL_INFO|DOT support: disabled"
fi