D:\home\alf\.cpan58\build\Archive-Tar-0.22>nmake test

...
cp Tar.pm blib\lib\Archive\Tar.pm
        D:\perl58\bin\perl.exe -MExtUtils::Command -e cp ptar blib\script\ptar
        pl2bat.bat blib\script\ptar
        D:\perl58\bin\perl.exe "-Iblib\lib" "-Iblib\arch" test.pl
1..10
ok 1
ok 2
ok 3
Can't call method "gzwrite" on an undefined value at blib\lib/Archive/Tar.pm line 493.
NMAKE : fatal error U1077: 'D:\perl58\bin\perl.exe' : return code '0xff'
Stop.