defines and compile order

Is it possible to add support for in-order/global defines?

#mydefines.sv:
```` 
// This would take presedence until undef, or new value defined
`define DW=32
````
#mymodule.sv
````
// Define from previous compiles are available, unless undef
module mymodule (
 input [`DW-1:0] data
);
endmodule
````
morty mydefine.sv mymodule.sv