I think in nmake if I do this:

 example :
        set value=77
        echo %%value%%

The result will display 77 on the console.

Is there a way for me to invoke a .cmd or .bat file that will affect the environment of the nmake.exe process? Suppose I put the statement set value=77 in a file called "setvalue.cmd". Then change the makefile to this:

 example :
        setvalue
        echo %%value%%

I get:

%value%

Alternatively, if there's a way to set a macro within a command block, that would also work. Or, a way to set the value of a macro from a batch file, even outside a command block.