** Error: (vcom-11) Could not find work.std_arith.

[Cherry]

How to resolve this error ?  ::  ** Error: (vcom-11) Could not find work.std_arith.

First few lines of code:

library IEEE;

use IEEE.std_logic_1164.all;

use work.std_arith.all;

Tried replacing work library with 

use IEEE.numeric_std;

(but looks like many functions (including +) are not able to execute using this library)

the errors with numeric_std library are:

-No feasible entries for infix operator "+".

-Type error resolving infix expression "+" as type ieee.std_logic_1164.STD_LOGIC_VECTOR.