Hi, I'm trying to compile openssh2.3.0p1 on aix3.2.5. Can I ignore this list of warning messages? bsd-bindresvport.c: In function `bindresvport_af': bsd-bindresvport.c:94: warning: implicit declaration of function `bind' bsd-rresvport.c: In function `rresvport_af': bsd-rresvport.c:64: warning: implicit declaration of function `bzero' bsd-rresvport.c:82: warning: implicit declaration of function `socket' bsd-rresvport.c:88: warning: implicit declaration of function `bind' bsd-setenv.c: In function `setenv': bsd-setenv.c:125: warning: implicit declaration of function `bcopy' bsd-setproctitle.c:62: warning: `__progname' defined but not used authfd.c: In function `ssh_get_authentication_socket': authfd.c:84: warning: implicit declaration of function `socket' authfd.c:93: warning: implicit declaration of function `connect' authfile.c: In function `load_private_key': authfile.c:494: warning: unsigned int format, long unsigned int arg (arg 2) canohost.c: In function `get_remote_hostname': canohost.c:39: warning: implicit declaration of function `getpeername' canohost.c:150: warning: implicit declaration of function `getsockopt' canohost.c: In function `get_sock_port': canohost.c:247: warning: implicit declaration of function `getsockname' channels.c: In function `channel_free': channels.c:318: warning: implicit declaration of function `shutdown' channels.c: In function `channel_post_x11_listener': channels.c:543: warning: implicit declaration of function `accept' channels.c: In function `channel_request_local_forwarding': channels.c:1484: warning: implicit declaration of function `socket' channels.c:1494: warning: implicit declaration of function `setsockopt' channels.c:1501: warning: implicit declaration of function `bind' channels.c:1512: warning: implicit declaration of function `listen' channels.c: In function `channel_connect_to': channels.c:1642: warning: implicit declaration of function `connect' channels.c: In function `x11_create_display_inet': channels.c:1819: warning: implicit declaration of function `gethostname' cipher.c: In function `cipher_by_name': cipher.c:450: warning: implicit declaration of function `strcasecmp' log.c: In function `log_facility_number': log.c:224: warning: implicit declaration of function `strcasecmp' nchan.c: In function `chan_shutdown_write': nchan.c:464: warning: implicit declaration of function `shutdown' packet.c: In function `packet_connection_is_on_socket': packet.c:196: warning: implicit declaration of function `getpeername' packet.c: In function `packet_connection_is_ipv4': packet.c:218: warning: implicit declaration of function `getsockname' packet.c: In function `packet_close': packet.c:265: warning: implicit declaration of function `shutdown' packet.c: In function `packet_read': packet.c:691: warning: implicit declaration of function `bzero' packet.c: In function `packet_set_interactive': packet.c:1240: warning: implicit declaration of function `setsockopt' entropy.c: In function `stir_gettimeofday': entropy.c:302: warning: implicit declaration of function `gettimeofday' entropy.c: In function `stir_rusage': entropy.c:331: warning: implicit declaration of function `getrusage' entropy.c: In function `hash_output_from_command': entropy.c:426: warning: implicit declaration of function `bzero' entropy.c: In function `prng_check_seedfile': entropy.c:532: warning: int format, long int arg (arg 3) entropy.c: In function `prng_write_seedfile': entropy.c:557: warning: int format, long int arg (arg 2) entropy.c: In function `prng_read_seedfile': entropy.c:596: warning: int format, long int arg (arg 2) uidswap.c: In function `temporarily_use_uid': uidswap.c:54: warning: implicit declaration of function `seteuid' ssh.c: In function `main': ssh.c:252: warning: implicit declaration of function `setrlimit' ssh.c: In function `ssh_session': ssh.c:802: warning: implicit declaration of function `ioctl' sshconnect.c: In function `ssh_create_socket': sshconnect.c:169: warning: implicit declaration of function `socket' sshconnect.c: In function `ssh_connect': sshconnect.c:265: warning: implicit declaration of function `connect' sshconnect.c:279: warning: implicit declaration of function `shutdown' sshconnect.c:305: warning: implicit declaration of function `setsockopt' sshconnect.c: In function `ssh_login': sshconnect.c:683: warning: unsigned int format, uid_t arg (arg 2) readconf.c: In function `parse_token': readconf.c:220: warning: implicit declaration of function `strcasecmp' clientloop.c: In function `get_current_time': clientloop.c:232: warning: implicit declaration of function `gettimeofday' clientloop.c: In function `client_check_window_change': clientloop.c:337: warning: implicit declaration of function `ioctl' clientloop.c: In function `client_wait_until_can_do_something': clientloop.c:368: warning: implicit declaration of function `bzero' sshd.c: In function `main': sshd.c:702: warning: implicit declaration of function `ioctl' sshd.c:758: warning: implicit declaration of function `socket' sshd.c:775: warning: implicit declaration of function `setsockopt' sshd.c:785: warning: implicit declaration of function `bind' sshd.c:797: warning: implicit declaration of function `listen' sshd.c:897: warning: implicit declaration of function `accept' auth-rhosts.c: In function `check_rhosts_file': auth-rhosts.c:110: warning: implicit declaration of function `innetgr' auth-rhosts.c:113: warning: implicit declaration of function `strcasecmp' pty.c: In function `pty_make_controlling_tty': pty.c:222: warning: implicit declaration of function `ioctl' pty.c: In function `pty_setowner': pty.c:312: warning: int format, long int arg (arg 3) pty.c:312: warning: int format, long int arg (arg 4) pty.c:315: warning: unsigned int format, mode_t arg (arg 3) log-server.c: In function `do_log': log-server.c:174: warning: implicit declaration of function `openlog' log-server.c:175: warning: implicit declaration of function `syslog' log-server.c:176: warning: implicit declaration of function `closelog' loginrec.c: In function `login_set_current_time': loginrec.c:376: warning: implicit declaration of function `gettimeofday' loginrec.c:721: warning: implicit declaration of function `setutent' loginrec.c:722: warning: implicit declaration of function `pututline' servconf.c: In function `parse_token': servconf.c:272: warning: implicit declaration of function `strcasecmp' serverloop.c: In function `wait_until_can_do_something': serverloop.c:197: warning: implicit declaration of function `bzero' serverloop.c: In function `process_output': serverloop.c:350: warning: implicit declaration of function `shutdown' In file included from session.c:60: /usr/include/usersec.h:88: warning: `struct userpw' declared inside parameter list /usr/include/usersec.h:88: warning: its scope is only this definition or declaration, /usr/include/usersec.h:88: warning: which is probably not what you want. session.c: In function `do_exec_no_pty': session.c:474: warning: implicit declaration of function `socketpair' session.c:493: warning: passing arg 1 of `log_init' discards `const' from pointer target type session.c: In function `do_exec_pty': session.c:606: warning: passing arg 1 of `log_init' discards `const' from pointer target type session.c: In function `do_login': session.c:707: warning: implicit declaration of function `getpeername' session.c: In function `set_limit': session.c:925: warning: implicit declaration of function `getrlimit' session.c:967: warning: implicit declaration of function `setrlimit' session.c: In function `do_child': session.c:1084: warning: implicit declaration of function `initgroups' session.c:1277: warning: implicit declaration of function `endpwent' ssh-keygen.c: In function `main': ssh-keygen.c:616: warning: implicit declaration of function `gethostname' ssh-agent.c: In function `process_message': ssh-agent.c:464: warning: implicit declaration of function `shutdown' ssh-agent.c: In function `after_select': ssh-agent.c:585: warning: implicit declaration of function `accept' ssh-agent.c: In function `main': ssh-agent.c:753: warning: implicit declaration of function `socket' ssh-agent.c:761: warning: implicit declaration of function `bind' ssh-agent.c:765: warning: implicit declaration of function `listen' ssh-agent.c:822: warning: implicit declaration of function `bzero' scp.c: In function `sink': scp.c:808: warning: implicit declaration of function `utimes' scp.c: In function `alarmtimer': scp.c:1103: warning: implicit declaration of function `setitimer' scp.c: In function `foregroundproc': scp.c:1132: warning: implicit declaration of function `ioctl' scp.c: In function `progressmeter': scp.c:1150: warning: implicit declaration of function `gettimeofday' sftp-server.c: In function `process_setstat': sftp-server.c:706: warning: implicit declaration of function `utimes' sftp-server.c: In function `main': sftp-server.c:1033: warning: implicit declaration of function `bzero' Thanks for any help. francesco