Undefined references ?

Hi, I am new here.This is my first message. When i type make php i get folowing error: .libs/libphp4.so: undefined reference to `ap_user_id' .libs/libphp4.so: undefined reference to `ap_table_get' .libs/libphp4.so: undefined reference to `ap_update_mtime' .libs/libphp4.so: undefined reference to `ap_kill_timeout' .libs/libphp4.so: undefined reference to `ap_uudecode' .libs/libphp4.so: undefined reference to `ap_setup_client_block' .libs/libphp4.so: undefined reference to `ap_getword' .libs/libphp4.so: undefined reference to `ap_add_cgi_vars' .libs/libphp4.so: undefined reference to `ap_getword_nulls_nc' .libs/libphp4.so: undefined reference to `ap_server_root' .libs/libphp4.so: undefined reference to `ap_destroy_sub_req' .libs/libphp4.so: undefined reference to `ap_group_id' .libs/libphp4.so: undefined reference to `ap_user_name' .libs/libphp4.so: undefined reference to `ap_pstrdup' .libs/libphp4.so: undefined reference to `ap_log_error' .libs/libphp4.so: undefined reference to `ap_table_add' .libs/libphp4.so: undefined reference to `ap_sub_req_lookup_uri' .libs/libphp4.so: undefined reference to `ap_run_sub_req' .libs/libphp4.so: undefined reference to `ap_register_cleanup' .libs/libphp4.so: undefined reference to `ap_signal' .libs/libphp4.so: undefined reference to `ap_send_http_header' .libs/libphp4.so: undefined reference to `ap_block_alarms' .libs/libphp4.so: undefined reference to `ap_child_terminate' .libs/libphp4.so: undefined reference to `ap_set_etag' .libs/libphp4.so: undefined reference to `ap_rwrite' .libs/libphp4.so: undefined reference to `ap_table_set' .libs/libphp4.so: undefined reference to `ap_get_client_block' .libs/libphp4.so: undefined reference to `ap_add_version_component' .libs/libphp4.so: undefined reference to `ap_hard_timeout' .libs/libphp4.so: undefined reference to `ap_rflush' .libs/libphp4.so: undefined reference to `top_module' .libs/libphp4.so: undefined reference to `ap_set_last_modified' .libs/libphp4.so: undefined reference to `ap_reset_timeout' .libs/libphp4.so: undefined reference to `ap_max_requests_per_child' .libs/libphp4.so: undefined reference to `ap_unblock_alarms' .libs/libphp4.so: undefined reference to `ap_add_common_vars' collect2: ld returned 1 exit status make: *** [php] Error 1 sasa@marvin(/usr/src/php-4.0.6)$ can anyone help me ? Thanks