QuartusII: Error(10481) - Error(10800)

Yeah, in fact that was the problem; these are the libraries I used:

library ieee;

use ieee.std_logic_1164.all;

use ieee.std_logic_arith.all;

use ieee.std_logic_unsigned.all;

library work;

use work.log_package.all;

use work.clock_sim_package.all;

use work.reset_sim_package.all;

use work.utils_package.all;

use work.clkdiv_package.all;

So I added (Project->Add/Remove) all the VHDL files I used (log_pachage.vhd, clock_sim_package.vhd, ...and so on)

But in log_package:

library ieee;

use ieee.std_logic_textio.all;

library std;

use std.textio.all;

library work;

use work.bus_control_package.all;

Now QuartusII get me a new error message:

• error (10481): vhdl use clause error at log_package.vhd(18): design library "ieee" does not contain primary unit "std_logic_textio"

• error (10800): vhdl error at log_package.vhd(18): selected name in use clause is not an expanded name

But in the ieee folder on my PC there is that library.

Where am I going wrong?

Maybe have I to tell Quartus where ieee library is? Have I to get it the path?

Thanks.