[Users] Error compiling Openser 1.1.0 on Slackware.

gcc -Wl,-O2 -Wl,-E action.o core_stats.o crc.o daemonize.o data_lump.o data_lump_rpl.o dprint.o dset.o error.o fifo_server.o flags.o forward.o io_wait.o ip_addr.o items.o items_extra.o main.o md5.o md5utils.o modparam.o msg_translator.o pass_fd.o proxy.o qvalue.o re.o receive.o resolve.o route.o route_struct.o script_cb.o serialize.o socket_info.o sr_module.o statistics.o tcp_main.o tcp_read.o timer.o tsend.o udp_server.o unixsock_server.o usr_avp.o mem/f_malloc.o mem/mem.o mem/memtest.o mem/q_malloc.o mem/shm_mem.o mem/vq_malloc.o parser/hf.o parser/msg_parser.o parser/parse_allow.o parser/parse_content.o parser/parse_cseq.o parser/parse_disposition.o parser/parse_diversion.o parser/parse_event.o parser/parse_expires.o parser/parse_fline.o parser/parse_from.o parser/parse_hname2.o parser/parse_hostport.o parser/parse_methods.o parser/parse_nameaddr.o parser/parse_param.o parser/parse_refer_to.o parser/parse_rpid.o parser/parse_rr.o parser/parse_sipifmatch.o parser/parse_sst.o parser/parse_supported.o parser/parse_to.o parser/parse_uri.o parser/parse_via.o parser/parser_f.o parser/digest/digest.o parser/digest/digest_parser.o parser/digest/param_parser.o parser/contact/contact.o parser/contact/parse_contact.o db/db.o db/db_fifo.o db/db_id.o db/db_pool.o lex.yy.o cfg.tab.o -ldl -lresolv -o openser io_wait.o(.text+0xe6a): In function `init_epoll': /usr/src/openser-1.1.0-notls/io_wait.c:201: warning: warning: epoll_create is not implemented and will always fail tcp_main.o(.text+0x36ad): In function `io_watch_add': /usr/src/openser-1.1.0-notls/io_wait.h:376: warning: warning: epoll_ctl is not implemented and will always fail tcp_main.o(.text+0x3dd6): In function `io_wait_loop_epoll': /usr/src/openser-1.1.0-notls/io_wait.h:701: warning: warning: epoll_wait is not implemented and will always fail Any ideas? TIA Shane