Trunk can't be compiled atm.

[Ryan Brown]

Unable to compile nginx trunk..

gcc-4.6.1-9 (Ubuntu)
./configure --with-openssl=/root/openssl/openssl-dev/openssl
--with-cpu-opt=pentium4 --with-http_gzip_static_module
--with-http_ssl_module --with-ipv6 --without-mail_pop3_module
--without-mail_imap_module --without-mail_smtp_module
--without-http_charset_module --without-http_ssi_module
--without-http_userid_module --without-http_autoindex_module
--without-http_rewrite_module --with-pcre --with-cc-opt='-O2 -g
-march=i386 -mtune=i686'


gcc -o objs/nginx \
        objs/src/core/nginx.o \
        objs/src/core/ngx_log.o \
        objs/src/core/ngx_palloc.o \
        objs/src/core/ngx_array.o \
        objs/src/core/ngx_list.o \
        objs/src/core/ngx_hash.o \
        objs/src/core/ngx_buf.o \
        objs/src/core/ngx_queue.o \
        objs/src/core/ngx_output_chain.o \
        objs/src/core/ngx_string.o \
        objs/src/core/ngx_parse.o \
        objs/src/core/ngx_inet.o \
        objs/src/core/ngx_file.o \
        objs/src/core/ngx_crc32.o \
        objs/src/core/ngx_murmurhash.o \
        objs/src/core/ngx_md5.o \
        objs/src/core/ngx_rbtree.o \
        objs/src/core/ngx_radix_tree.o \
        objs/src/core/ngx_slab.o \
        objs/src/core/ngx_times.o \
        objs/src/core/ngx_shmtx.o \
        objs/src/core/ngx_connection.o \
        objs/src/core/ngx_cycle.o \
        objs/src/core/ngx_spinlock.o \
        objs/src/core/ngx_cpuinfo.o \
        objs/src/core/ngx_conf_file.o \
        objs/src/core/ngx_resolver.o \
        objs/src/core/ngx_open_file_cache.o \
        objs/src/core/ngx_crypt.o \
        objs/src/event/ngx_event.o \
        objs/src/event/ngx_event_timer.o \
        objs/src/event/ngx_event_posted.o \
        objs/src/event/ngx_event_busy_lock.o \
        objs/src/event/ngx_event_accept.o \
        objs/src/event/ngx_event_connect.o \
        objs/src/event/ngx_event_pipe.o \
        objs/src/os/unix/ngx_time.o \
        objs/src/os/unix/ngx_errno.o \
        objs/src/os/unix/ngx_alloc.o \
        objs/src/os/unix/ngx_files.o \
        objs/src/os/unix/ngx_socket.o \
        objs/src/os/unix/ngx_recv.o \
        objs/src/os/unix/ngx_readv_chain.o \
        objs/src/os/unix/ngx_udp_recv.o \
        objs/src/os/unix/ngx_send.o \
        objs/src/os/unix/ngx_writev_chain.o \
        objs/src/os/unix/ngx_channel.o \
        objs/src/os/unix/ngx_shmem.o \
        objs/src/os/unix/ngx_process.o \
        objs/src/os/unix/ngx_daemon.o \
        objs/src/os/unix/ngx_setproctitle.o \
        objs/src/os/unix/ngx_posix_init.o \
        objs/src/os/unix/ngx_user.o \
        objs/src/os/unix/ngx_process_cycle.o \
        objs/src/os/unix/ngx_linux_init.o \
        objs/src/event/modules/ngx_epoll_module.o \
        objs/src/os/unix/ngx_linux_sendfile_chain.o \
        objs/src/event/ngx_event_openssl.o \
        objs/src/core/ngx_regex.o \
        objs/src/http/ngx_http.o \
        objs/src/http/ngx_http_core_module.o \
        objs/src/http/ngx_http_special_response.o \
        objs/src/http/ngx_http_request.o \
        objs/src/http/ngx_http_parse.o \
        objs/src/http/ngx_http_header_filter_module.o \
        objs/src/http/ngx_http_write_filter_module.o \
        objs/src/http/ngx_http_copy_filter_module.o \
        objs/src/http/modules/ngx_http_log_module.o \
        objs/src/http/ngx_http_request_body.o \
        objs/src/http/ngx_http_variables.o \
        objs/src/http/ngx_http_script.o \
        objs/src/http/ngx_http_upstream.o \
        objs/src/http/ngx_http_upstream_round_robin.o \
        objs/src/http/ngx_http_parse_time.o \
        objs/src/http/modules/ngx_http_static_module.o \
        objs/src/http/modules/ngx_http_index_module.o \
        objs/src/http/modules/ngx_http_chunked_filter_module.o \
        objs/src/http/modules/ngx_http_range_filter_module.o \
        objs/src/http/modules/ngx_http_headers_filter_module.o \
        objs/src/http/modules/ngx_http_not_modified_filter_module.o \
        objs/src/http/ngx_http_busy_lock.o \
        objs/src/http/ngx_http_file_cache.o \
        objs/src/http/modules/ngx_http_gzip_filter_module.o \
        objs/src/http/modules/ngx_http_gzip_static_module.o \
        objs/src/http/modules/ngx_http_auth_basic_module.o \
        objs/src/http/modules/ngx_http_access_module.o \
        objs/src/http/modules/ngx_http_limit_conn_module.o \
        objs/src/http/modules/ngx_http_limit_req_module.o \
        objs/src/http/modules/ngx_http_geo_module.o \
        objs/src/http/modules/ngx_http_map_module.o \
        objs/src/http/modules/ngx_http_split_clients_module.o \
        objs/src/http/modules/ngx_http_referer_module.o \
        objs/src/http/modules/ngx_http_ssl_module.o \
        objs/src/http/modules/ngx_http_proxy_module.o \
        objs/src/http/modules/ngx_http_fastcgi_module.o \
        objs/src/http/modules/ngx_http_uwsgi_module.o \
        objs/src/http/modules/ngx_http_scgi_module.o \
        objs/src/http/modules/ngx_http_memcached_module.o \
        objs/src/http/modules/ngx_http_empty_gif_module.o \
        objs/src/http/modules/ngx_http_browser_module.o \
        objs/src/http/modules/ngx_http_upstream_ip_hash_module.o \
        objs/src/http/modules/ngx_http_upstream_keepalive_module.o \
        objs/ngx_modules.o \
        -lpthread -lcrypt -lpcre
/root/openssl/openssl-dev/openssl/.openssl/lib/libssl.a
/root/openssl/openssl-dev/openssl/.openssl/lib/libcrypto.a -ldl -lz
objs/src/core/ngx_resolver.o: In function `ngx_udp_connect':
/root/trunk/src/core/ngx_resolver.c:2214: undefined reference to
`__sync_fetch_and_add_4'
objs/src/core/ngx_file.o: In function `ngx_next_temp_number':
/root/trunk/src/core/ngx_file.c:232: undefined reference to
`__sync_fetch_and_add_4'
objs/src/core/ngx_times.o: In function `ngx_time_sigsafe_update':
/root/trunk/src/core/ngx_times.c:193: undefined reference to
`__sync_bool_compare_and_swap_4'
objs/src/core/ngx_times.o: In function `ngx_time_update':
/root/trunk/src/core/ngx_times.c:83: undefined reference to
`__sync_bool_compare_and_swap_4'
objs/src/core/ngx_shmtx.o: In function `ngx_shmtx_wakeup':
/root/trunk/src/core/ngx_shmtx.c:181: undefined reference to
`__sync_bool_compare_and_swap_4'
objs/src/core/ngx_shmtx.o: In function `ngx_shmtx_trylock':
/root/trunk/src/core/ngx_shmtx.c:65: undefined reference to
`__sync_bool_compare_and_swap_4'
objs/src/core/ngx_shmtx.o: In function `ngx_shmtx_lock':
/root/trunk/src/core/ngx_shmtx.c:78: undefined reference to
`__sync_bool_compare_and_swap_4'
objs/src/core/ngx_shmtx.o:/root/trunk/src/core/ngx_shmtx.c:91: more
undefined references to `__sync_bool_compare_and_swap_4' follow
objs/src/event/ngx_event_accept.o: In function `ngx_event_accept':
/root/trunk/src/event/ngx_event_accept.c:224: undefined reference to
`__sync_fetch_and_add_4'
objs/src/event/ngx_event_connect.o: In function `ngx_event_connect_peer':
/root/trunk/src/event/ngx_event_connect.c:105: undefined reference to
`__sync_fetch_and_add_4'
objs/src/http/ngx_http_file_cache.o: In function `ngx_http_file_cache_loader':
/root/trunk/src/http/ngx_http_file_cache.c:1364: undefined reference
to `__sync_bool_compare_and_swap_4'
collect2: ld returned 1 exit status
make[1]: *** [objs/nginx] Error 1
make[1]: Leaving directory `/root/trunk'
make: *** [build] Error 2