C:\>perl -e "use POSIX qw(:sys_wait_h SIGHUP SIGKILL);
my $child_pid; if(!($child_pid = fork())) { exit(0); } 
kill(SIGKILL, $child_pid);"

Your vendor has not defined POSIX macro SIGHUP, used at -e line 1

##</code><code>##

C:\> perl -v

This is perl, v5.8.8 built for MSWin32-x86-multi-thread
(with 50 registered patches, see perl -V for more detail)

Binary build 820 [274739] provided by ActiveState