标题包含问题

时间:2012-07-18 02:14:53

标签: c gcc makefile tor

在修改它之后,我遇到了编译Tor的问题。

在一个名为control.c的文件中,我添加了一个引用名为rend_service_t的结构的代码(位于rendservice.h中)。我将rendservice.h添加到control.c的顶部,因为它之前没有包含它。

如果我尝试使用包含的Makefile,我会收到此错误:

control.c:2841: error: 'rend_service_t' undeclared (first use in this function)

我猜测rendservice.c没有被包含或者没有被编译,所以我检查目录并且没有用于rendservice的目标文件。我有点困惑,因为它显然被包括在内。 是什么导致这种情况发生?

我还尝试修改Makefile.am/.in,以便rendservice.c/h出现在control.c/h之前,但它没有任何区别。

control.c

...
#include "rendservice.h"
...
static int
handle_control_addservice(control_connection_t *conn, uint32_t len,
                             const char *body)
{
  smartlist_t *args;
  rend_service_t *service;
...

rendservice.c

...
/** Represents a single hidden service running at this OP. */
typedef struct rend_service_t {
  /* Fields specified in config file */
  char *directory; /**< where in the filesystem it stores it */
  smartlist_t *ports; /**< List of rend_service_port_config_t */
  rend_auth_type_t auth_type; /**< Client authorization type or 0 if no client
                               * authorization is performed. */
  smartlist_t *clients; /**< List of rend_authorized_client_t's of
                         * clients that may access our service. Can be NULL
                         * if no client authorization is performed. */
  /* Other fields */
  crypto_pk_env_t *private_key; /**< Permanent hidden-service key. */
  char service_id[REND_SERVICE_ID_LEN_BASE32+1]; /**< Onion address without
                                                  * '.onion' */
  char pk_digest[DIGEST_LEN]; /**< Hash of permanent hidden-service key. */
  smartlist_t *intro_nodes; /**< List of rend_intro_point_t's we have,
                             * or are trying to establish. */
  time_t intro_period_started; /**< Start of the current period to build
                                * introduction points. */
  int n_intro_circuits_launched; /**< Count of intro circuits we have
                                  * established in this period. */
  rend_service_descriptor_t *desc; /**< Current hidden service descriptor. */
  time_t desc_is_dirty; /**< Time at which changes to the hidden service
                         * descriptor content occurred, or 0 if it's
                         * up-to-date. */
  time_t next_upload_time; /**< Scheduled next hidden service descriptor
                            * upload time. */
  /** Map from digests of Diffie-Hellman values INTRODUCE2 to time_t of when
   * they were received; used to prevent replays. */
  digestmap_t *accepted_intros;
  /** Time at which we last removed expired values from accepted_intros. */
  time_t last_cleaned_accepted_intros;
} rend_service_t;
...

2 个答案:

答案 0 :(得分:1)

rend_service_trendservice.c专用的结构 - 它似乎不打算在.c文件之外使用,并且未在rendservice.h中声明。 (请参阅rendservice.c的版本,我在这里查看:https://doxygen.torproject.org/rendservice_8c_source.html)。

所以这不是一个包含头的问题 - 结构在头文件中根本没有显示。

您应该询问有关您打算使用struct rend_service_t的内容的问题。

答案 1 :(得分:0)

正在编译您的文件control.c并且正在生成编译错误。是否在之前或之后编译rendservice.c无关紧要。所有编译器都看到的是control.c以及它所引入的任何头文件。

可能rend_service_t的定义在ifdef部分中,因此编译器正在跳过它。可能你需要#define REND_SERVICE或类似的东西...看看rendservice.h并查看read_service_t定义是否在ifdef块中。