Добавлено #define _WINSOCKAPI_, но сборка все еще не выполняется.
/*
* $PostgreSQL: pgsql/src/include/port/win32/sys/socket.h,v 1.7 2006/10/04 00:30:10 momjian Exp $
*/
#ifndef WIN32_SYS_SOCKET_H
#define WIN32_SYS_SOCKET_H
/*
* Unfortunately, <wingdi.h> of VC++ also defines ERROR.
* To avoid the conflict, we include <windows.h> here and undefine ERROR
* immediately.
*
* Note: Don't include <wingdi.h> directly. It causes compile errors.
*/
#define _WINSOCKAPI_ //added this line but no help
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
#undef ERROR
#undef small
/* Restore old ERROR value */
#ifdef PGERROR
#define ERROR PGERROR
#endif
/*
* we can't use the windows gai_strerror{AW} functions because
* they are defined inline in the MS header files. So we'll use our
* own
*/
#undef gai_strerror
#endif /* WIN32_SYS_SOCKET_H */