passing arguments to a Make file using perl script

[rockzzz]

Hi Guys
I am a beginner to perl. i have a make file which takes arguments and creates a exe file but I wonder how could i pass arguments to the makefile

I found a small snippet of code. could someone help me in explaining me how did it do

  
       $gmakeopt;
       $outputdir .= "_$random_seed" if($random_seed ne "none");
           unless (-d $outputdir) {
	   mkdir($outputdir, 0777);
    }

	if($random_seed ne "none")
	{
		system "gmake RANDOM_SEED=$random_seed $gmakeopt";
	}
	else
	{
        system "gmake $gmakeopt";
	}