How to make coder use #define macro for constant values

I have a list of physical constants which are defined as constant properties in a classdef. For instance:

    classdef uniConst
      properties (Constant)
        gravity=9.81;
        pressure=1021;
      end
    end

When I use coder on a matlab script, coder inserts all of these constants as hard-coded values (such as 9.81 instead of gravity). Is there anyway to make coder use #define statements for such constant values so that the resultant code can be more human-readable?