在2010 C++中生成错误

Question

Error   33  error C2375: 'accept' : redefinition; different linkage C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1578
Error   34  error C2375: 'bind' : redefinition; different linkage   C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1600
Error   35  error C2375: 'closesocket' : redefinition; different linkage    C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1619
Error   36  error C2375: 'connect' : redefinition; different linkage    C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1638
Error   37  error C2375: 'ioctlsocket' : redefinition; different linkage    C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1659
Error   38  error C2375: 'getpeername' : redefinition; different linkage    C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1680
Error   39  error C2375: 'getsockname' : redefinition; different linkage    C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1701
Error   40  error C2375: 'getsockopt' : redefinition; different linkage C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1724
Error   41  error C2375: 'htonl' : redefinition; different linkage  C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1745
Error   42  error C2375: 'htons' : redefinition; different linkage  C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1762
Error   43  error C2375: 'inet_addr' : redefinition; different linkage  C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1780
Error   44  error C2375: 'inet_ntoa' : redefinition; different linkage  C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1797
Error   45  error C2375: 'listen' : redefinition; different linkage C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\winsock2.h  1815

这些是我在准备我的项目构建时遇到的错误。我从我的搜索中发现，这可能是因为在包含winsock2之前包含了windows.h。但我没有直接包括任何这些文件。提前谢谢你的帮助。

Answer 1

我用以下方式解决了这个问题。请告诉我其他的意见：-

错误消息显示，包含了第一个winsock，然后包含了winsock2。由于编译器引发了重新定义错误(因为编译器已经遇到了这些结构)。

我以下列方式改变了列入的顺序：

较早前：-

#ifndef __ZMQ_H_INCLUDED__
#define __ZMQ_H_INCLUDED__

#ifdef __cplusplus
extern "C" {
#endif
#if !defined WINCE
#include <errno.h>
#endif
#include <stddef.h>
#include <stdio.h>
#if defined _WIN32
#include <winsock2.h>                           
#endif

After:-

#ifndef __ZMQ_H_INCLUDED__
#define __ZMQ_H_INCLUDED__

#ifdef __cplusplus
extern "C" {
#endif
#if !defined WINCE
#include <errno.h>
#endif
#include <stddef.h>
#include <stdio.h>
#if defined _WIN32
#ifndef _WINSOCKAPI_                              //ADDED
#include <winsock2.h>                           
#endif                                            //ADDED
#endif

Answer 2

由于windows.h包含winsock.h( winsock2.h的旧版本)，所以必须将winsock2.h的任何包含(或包含winsock2.h的任何文件，在本例中为zmq.h )放在行之前：

#include <windows.h>

正确的顺序应该是这样的：

.
.
#include "zmq.h"
.
.
#include <windows.h>