all:
	echo NODEBUG=$(NODEBUG)
	echo ADDED_CFLAGS=$(ADDED_CFLAGS)

##</code><code>##

my $cmd = q|nmake /s NODEBUG=1 "ADDED_CFLAGS=/DCOST_EN_US /DPAYMENT_CREDIT_CARD"|;
open(my $fr_nmake, '-|', "$cmd 2>&1") or die;
print <$fr_nmake>;
close($fr_nmake);

##</code><code>##

>perl 655027.pl

Microsoft (R) Program Maintenance Utility   Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

NODEBUG=1
ADDED_CFLAGS=/DCOST_EN_US /DPAYMENT_CREDIT_CARD


##</code><code>##

my @cmd = ('nmake', '/s', 'NODEBUG=1', 'ADDED_CFLAGS=/DCOST_EN_US /DPAYMENT_CREDIT_CARD');
my $cmd = join ' ', map quotemeta, @cmd;
open(my $fr_nmake, '-|', "$cmd 2>&1") or die;
print <$fr_nmake>;
close($fr_nmake);