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winsock2.h includes cause compiler errors. #127

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winsock2.h includes cause compiler errors.#127
@ThePlayerRolo

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@ThePlayerRolo
ThePlayerRolo
opened on Mar 6, 2026

On attempting to compile network lib you get the following errors:

1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(112) : error C2011: 'fd_set' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(54) : see declaration of 'fd_set'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(147) : warning C4005: 'FD_SET' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(88) : see previous definition of 'FD_SET'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(156) : error C2011: 'timeval' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(97) : see declaration of 'timeval'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(212) : error C2011: 'hostent' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(153) : see declaration of 'hostent'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(225) : error C2011: 'netent' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(166) : see declaration of 'netent'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(232) : error C2011: 'servent' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(173) : see declaration of 'servent'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(244) : error C2011: 'protoent' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(185) : see declaration of 'protoent'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(400) : error C2011: 'sockaddr_in' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(321) : see declaration of 'sockaddr_in'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(410) : error C2011: 'WSAData' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(331) : see declaration of 'WSAData'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(470) : warning C4005: 'SO_DONTLINGER' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(411) : see previous definition of 'SO_DONTLINGER'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(527) : warning C4005: 'AF_IPX' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(469) : see previous definition of 'AF_IPX'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(555) : warning C4005: 'AF_MAX' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(488) : see previous definition of 'AF_MAX'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(561) : error C2011: 'sockaddr' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(494) : see declaration of 'sockaddr'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(601) : error C2011: 'sockproto' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(503) : see declaration of 'sockproto'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(640) : error C2011: 'linger' : 'struct' type redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(540) : see declaration of 'linger'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(653) : warning C4005: 'SOMAXCONN' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(553) : see previous definition of 'SOMAXCONN'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(679) : warning C4005: 'FD_READ' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(571) : see previous definition of 'FD_READ'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(682) : warning C4005: 'FD_WRITE' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(572) : see previous definition of 'FD_WRITE'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(685) : warning C4005: 'FD_OOB' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(573) : see previous definition of 'FD_OOB'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(688) : warning C4005: 'FD_ACCEPT' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(574) : see previous definition of 'FD_ACCEPT'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(691) : warning C4005: 'FD_CONNECT' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(575) : see previous definition of 'FD_CONNECT'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(694) : warning C4005: 'FD_CLOSE' : macro redefinition
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(576) : see previous definition of 'FD_CLOSE'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(1626) : error C2375: 'accept' : redefinition; different linkage
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(744) : see declaration of 'accept'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(1647) : error C2375: 'bind' : redefinition; different linkage
1> C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(749) : see declaration of 'bind'
1>C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(1666) : error C2375: 'closesocket' : redefinition; different linkage

as well as many more, however they are telling the same idea:
the includes of winsock2.h are causing redefinitions of certain structs and macros

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