Passing custom argument to Yosys's GHDL

[leonidas213]

Description

When i try to build vhdl files with a synopsys library, Yosys gives me this message and throw an error.

2. Executing GHDL.
   /home/runner/work/tt06-vhdl-demo/tt06-vhdl-demo/src/tt_um_smallcpu.vhdl:998:10: use of synopsys package "std_logic_unsigned" needs the -fsynopsys option
   USE ieee.std_logic_unsigned.all;
   ^
   /home/runner/work/tt06-vhdl-demo/tt06-vhdl-demo/src/tt_um_smallcpu.vhdl:1022:10: use of synopsys package "std_logic_unsigned" needs the -fsynopsys option
   USE ieee.std_logic_unsigned.all;
   ^
   ERROR: vhdl import failed.
   ERROR: TCL interpreter returned an error: Yosys command produced an error
   [20:06:58] ERROR 2. Executing GHDL. step.py:1170 /home/runner/work/tt06-vhdl-demo/tt06-vhdl-demo
   /src/tt_um_smallcpu.vhdl:998:10: use of
   synopsys package "std_logic_unsigned" needs the
   -fsynopsys option
   USE ieee.std_logic_unsigned.all;
   ^
   /home/runner/work/tt06-vhdl-demo/tt06-vhdl-demo
   /src/tt_um_smallcpu.vhdl:1022:10: use of
   synopsys package "std_logic_unsigned" needs the
   -fsynopsys option
   USE ieee.std_logic_unsigned.all;
   ^
   ERROR: vhdl import failed.
   ERROR: TCL interpreter returned an error: Yosys
   command produced an error

normally i use GHDL with these arguments "--std=08 --ieee=synopsys" . So it would be nice if there is a way to pass these arguments to Yosys's GHDL.

Proposal

No response