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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
C:\> perl -v ... (with 50 registered patches, see perl -V for more detail) Binary build 820 [274739] provided by ActiveState