Mine

s/mikkelm/Desktop/src/httpd-2.0.59/server -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/dav/main export_vars.h | grep -v apr_ | sed -e 's/^\#[^!]*//' | sed -e '/^$/d' >> httpd.exp
Making all in modules
Making all in aaa
Making all in filters
Making all in loggers
Making all in metadata
Making all in http
make[3]: Nothing to be done for `local-all'.
Making all in dav/main
Making all in generators
Making all in dav/fs
Making all in mappers
make[3]: Nothing to be done for `local-all'.
Making all in support
make[2]: Nothing to be done for `local-all'.
/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr/libtool --silent --mode=compile gcc  -g -O2    -DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK -no-cpp-precomp -DAP_HAVE_DESIGNATED_INITIALIZER   -I/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr/include -I/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/include -I/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/xml/expat/lib -I. -I/Users/mikkelm/Desktop/src/httpd-2.0.59/os/unix -I/Users/mikkelm/Desktop/src/httpd-2.0.59/server/mpm/prefork -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/http -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/filters -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/proxy -I/Users/mikkelm/Desktop/src/httpd-2.0.59/include -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/generators -I/Users/mikkelm/Desktop/src/httpd-2.0.59/server -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/dav/main -prefer-non-pic -static -c modules.c && touch modules.lo
/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr/libtool --silent --mode=link gcc  -g -O2    -DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK -no-cpp-precomp -DAP_HAVE_DESIGNATED_INITIALIZER   -I/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr/include -I/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/include -I/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/xml/expat/lib -I. -I/Users/mikkelm/Desktop/src/httpd-2.0.59/os/unix -I/Users/mikkelm/Desktop/src/httpd-2.0.59/server/mpm/prefork -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/http -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/filters -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/proxy -I/Users/mikkelm/Desktop/src/httpd-2.0.59/include -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/generators -I/Users/mikkelm/Desktop/src/httpd-2.0.59/server -I/Users/mikkelm/Desktop/src/httpd-2.0.59/modules/dav/main -export-dynamic -L/Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/xml/expat/lib   -o httpd  modules.lo  modules/http/mod_http.la modules/mappers/mod_so.la server/mpm/prefork/libprefork.la server/libmain.la os/unix/libos.la  /Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/pcre/libpcre.la /Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/libaprutil-0.la /Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr-util/xml/expat/lib/libexpat.la -liconv /Users/mikkelm/Desktop/src/httpd-2.0.59/srclib/apr/libapr-0.la -lresolv -lpthread 
/usr/bin/ld: Undefined symbols:
_main
_core_module
_ap_add_output_filter_handle
_ap_check_cmd_context
_ap_content_length_filter_handle
_ap_extended_status
_ap_hook_create_request
_ap_hook_default_port
_ap_hook_http_method
_ap_hook_map_to_storage
_ap_hook_process_connection
_ap_increment_counts
_ap_pass_brigade
_ap_read_request
_ap_register_input_filter
_ap_register_output_filter
_ap_update_child_status
_ap_add_output_filter
_ap_add_output_filters_by_type
_ap_bucket_error_create
_ap_bucket_type_error
_ap_escape_html
_ap_finalize_request_protocol
_ap_find_last_token
_ap_find_list_item
_ap_find_token
_ap_get_brigade
_ap_get_limit_req_body
_ap_get_mime_headers
_ap_get_server_version
_ap_getword
_ap_log_perror
_ap_log_rerror
_ap_make_content_type
_ap_psignature
_ap_recent_rfc822_date
_ap_remove_output_filter
_ap_response_code_string
_ap_rputs
_ap_rvputs
_ap_create_request_config
_ap_invoke_handler
_ap_is_recursion_limit_exceeded
_ap_is_url
_ap_parse_uri
_ap_process_request_internal
_ap_run_create_request
_ap_run_log_transaction
_ap_run_post_read_request
_ap_run_quick_handler
_ap_subreq_core_filter_handle
_ap_time_process_request
_ap_add_loaded_module
_ap_log_error
_ap_remove_loaded_module
_ap_server_root_relative
_ap_single_module_configure
_ap_accept_lock_mech
_ap_coredump_dir
_ap_create_sb_handle
_ap_exists_config_define
_ap_fatal_signal_child_setup
_ap_fatal_signal_setup
_ap_get_server_built
_ap_hook_open_logs
_ap_hook_pre_config
_ap_lingering_close
_ap_listen_pre_config
_ap_listeners
_ap_lock_fname
_ap_log_pid
_ap_max_mem_free
_ap_max_requests_per_child
_ap_mpm_pod_check
_ap_mpm_pod_close
_ap_mpm_pod_killpg
_ap_mpm_pod_open
_ap_mpm_pod_signal
_ap_mpm_rewrite_args
_ap_pid_fname
_ap_process_child_status
_ap_process_connection
_ap_reclaim_child_processes
_ap_reopen_scoreboard
_ap_run_child_init
_ap_run_create_connection
_ap_run_pre_mpm
_ap_scoreboard_image
_ap_server_root
_ap_set_listenbacklog
_ap_set_listener
_ap_set_receive_buffer_size
_ap_set_send_buffer_size
_ap_setup_listeners
_ap_update_child_status_from_indexes
_ap_wait_or_timeout
_find_child_by_pid
_ap_getword_conf
_ap_gname2id
_ap_uname2id
collect2: ld returned 1 exit status
make[1]: *** [httpd] Error 1
make: *** [all-recursive] Error 1