I'm installing ruby for the first time on OS X 10.4.11. I'm following the directions written in Simply Rails 2, the section on install Ruby on a Mac. I installed readline, then I followed the directions for installing ruby 1.8.6. I ran "sudo make install" - no errors. When I ran "make install-doc", I get the following errors: No definition for proc_getpgrp .......................................................... random.c: .. range.c: c................ re.c: ccc.................................... regex.c: ruby.c: signal.c: m.... No definition for interrupt_init . sprintf.c: followed later by these errors: socket.c: ccccccccccm. No definition for bsock_do_not_rev_lookup . No definition for bsock_do_not_rev_lookup_set . No definition for bsock_s_for_fd . No definition for bsock_close_read . No definition for bsock_close_write . No definition for bsock_shutdown ... No definition for bsock_getsockname . No definition for bsock_getpeername . No definition for bsock_send . No definition for bsock_recv .. No definition for ip_addr . No definition for ip_peeraddr . No definition for ip_recvfrom . No definition for ip_s_getaddress ... No definition for socks_init . No definition for socks_s_close . No definition for tcp_accept .. No definition for tcp_sysaccept . No definition for tcp_svr_init .. No definition for udp_init . No definition for udp_connect . No definition for udp_bind . No definition for udp_send .. No definition for unix_init . No definition for unix_path . No definition for unix_addr . No definition for unix_peeraddr . No definition for unix_recvfrom . No definition for unix_send_io . No definition for unix_recv_io . No definition for unix_s_socketpair . No definition for unix_s_socketpair . No definition for unix_svr_init . No definition for unix_accept .. No definition for unix_sysaccept .. No definition for sock_initialize .......... No definition for sock_s_socketpair . No definition for sock_s_socketpair . No definition for sock_gethostname .. No definition for sock_s_gethostbyaddr ... No definition for sock_s_getnameinfo . No definition for sock_s_pack_sockaddr_in . No definition for sock_s_pack_sockaddr_in . No definition for sock_s_unpack_sockaddr_in . No definition for sock_s_pack_sockaddr_un . No definition for sock_s_pack_sockaddr_un . No definition for sock_s_unpack_sockaddr_un stringio.c: c..................................................... Running the command "ruby -v" tells me I've got version 1.8.6. But, should I be worried about these errors?