Synopsys Design Compiler library reading error (UI0-3)

After reading my VHDL code in "Synopsys Design Analyzer", when i compile the design
using command window, the following error appears:
"could not read following target libraries: (UI0-3) your_library.db"
I only use IEEE library. How can i link this library?

this is my VHDL code:

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;

ENTITY mux_2_1 IS
PORT(mux_in1 : IN STD_LOGIC;
mux_in2 : IN STD_LOGIC;
mux_sel : IN STD_LOGIC;
mux_out : OUT STD_LOGIC);
END ENTITY mux_2_1;

ARCHITECTURE mux_arch OF mux_2_1 IS
BEGIN
PROCESS(mux_in1,mux_in2,mux_sel)
BEGIN
CASE mux_sel IS
WHEN '0' =>
mux_out <= mux_in1;
WHEN '1' =>
mux_out <= mux_in2;
WHEN OTHERS =>
mux_out <= 'Z';
END CASE;
END PROCESS;
END ARCHITECTURE mux_arch;

What is your target_library definition? Command compile requires target_library.

I only type "compile" keyword. what else does it need?would you please give me an example? i use "design analyzer" gui for library link, but i dont know which library should i link to.

if you haven't specific technology library, you can use generic one, that comes with DesignCompiler. Example:

set target_library "<PATH to DesignCompiler root dir>/libraries/syn/gtech.db"
analyze <your_rtl_file>
elaborate

compile

Then, open GUI.

thanks,
but link design menu is not active to give a library path in gui. it is activated after analyzing and elaborating the design. how can i do this using shell and before reading the vhdl code?

regards

just type in the beginning

set target_library "<PATH to DesignCompiler root dir>/libraries/syn/gtech.db"

then, read your RTL

i tried these in command window and got following errors:

set target_library "C:\Synopsys\libraries\syn\gtech.db"
Error: Undefined operator on or near line 1 at or near 'set'. (EQN-2)

design_analyzer> set target_library "C:/Synopsys/libraries/syn/gtech.db"
Error: Undefined operator on or near line 2 at or near 'set'. (EQN-2)

design_analyzer> set target_library C:\Synopsys\libraries\syn\gtech.db
Error: _fstdin: Lexical Error on line 3 at or near '\S'. (SCAN-4)

design_analyzer> set target_library C:/Synopsys/libraries/syn/gtech.db
Error: Undefined operator on or near line 3 at or near 'set'. (EQN-2)

so what is the correct syntax?

you must first set the target library file
using
set target_library filename.db
file and then compile it

thank you all;
I solved problem using "setup>defaults" menu instead of "analyze>link design" menu to set the path and library.