static int onion_extend_cpath(origin_circuit_t *circ);
static int count_acceptable_nodes(smartlist_t *routers);
static int onion_append_hop(crypt_path_t **head_ptr, extend_info_t *choice);
-static int entry_guard_inc_circ_attempt_count(entry_guard_t *guard);
-static void pathbias_count_build_success(origin_circuit_t *circ);
-static void pathbias_count_successful_close(origin_circuit_t *circ);
-static void pathbias_count_collapse(origin_circuit_t *circ);
-static void pathbias_count_use_failed(origin_circuit_t *circ);
-static void pathbias_measure_use_rate(entry_guard_t *guard);
-static void pathbias_measure_close_rate(entry_guard_t *guard);
-static void pathbias_scale_use_rates(entry_guard_t *guard);
+ #ifdef CURVE25519_ENABLED
+ static int circuits_can_use_ntor(void);
+ #endif
/** This function tries to get a channel to the specified endpoint,
* and then calls command_setup_channel() to give it the right