# These OSes complain if you want to remove a file that you have no
# write permission to:
-my $force_writeable = ($^O eq 'os2' || $^O eq 'msdos' || $^O eq 'MSWin32'
+my $force_writeable = ($^O eq 'os2' || $^O eq 'dos' || $^O eq 'MSWin32'
|| $^O eq 'amigaos');
sub mkpath {