if test -z "$TCL_INCLUDE_DIR"; then
    AC_MSG_ERROR([
  Can't find tcl.h.  Use --with-tcl-includes to specify the directory
  containing tcl.h on your system.])
else
    AC_MSG_RESULT($TCL_INCLUDE_DIR/tcl.h)
fi


# ---
# check for the terminal library.
# ---

AC_ARG_WITH(tlib-library,
    [  --with-tlib-library=DIR
		  lib spec to tlib (e.g. '-L/usr/local/lib -lncurses')],
    LIBS="$LIBS $withval",
    for tlib in ncurses termlib termcap curses; do
	brk=yes
	AC_CHECK_LIB($tlib, tputs, , brk=no)
	if test $brk = "yes"; then
	    HAVE_TLIB=yes
	    break
	fi
    done
    if test "x" = "x$HAVE_TLIB"; then
	AC_MSG_ERROR([
	    no terminal library found. Please retry with the --with-tlib argument.
	])
    fi
)


#--------------------------------------------------------------------
#   Check for readline.h
#--------------------------------------------------------------------

AC_ARG_WITH(readline-includes,
            [  --with-readline-includes=DIR readline include files in DIR],
            rl_includes=$withval, rl_includes="")