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Posted on 2001-08-21
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Last Modified: 2010-04-15
My programs compile, but when I try to create the exe, I receive the following errors:

Linking...
t6.obj : error LNK2001: unresolved external symbol _htons@4
t6.obj : error LNK2001: unresolved external symbol _inet_ntoa@4
t6.obj : error LNK2001: unresolved external symbol _gethostbyname@4
t6.obj : error LNK2001: unresolved external symbol _inet_addr@4
t6.obj : error LNK2001: unresolved external symbol _connect@12
t6.obj : error LNK2001: unresolved external symbol _socket@12
t6.obj : error LNK2001: unresolved external symbol _send@16
t6.obj : error LNK2001: unresolved external symbol _recv@16
ws-util.obj : error LNK2001: unresolved external symbol _recv@16
ws-util.obj : error LNK2001: unresolved external symbol _WSAGetLastError@0
ws-util.obj : error LNK2001: unresolved external symbol _closesocket@4
ws-util.obj : error LNK2001: unresolved external symbol _shutdown@8
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/t6.exe : fatal error LNK1120: 12 unresolved externals
Error executing link.exe.

t6.exe - 14 error(s), 0 warning(s)


WHat am I missing?
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Question by:ronandersen
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newmang earned 50 total points
ID: 6411763
Assuming that you are using a Windows compiler (VC??) then you need to include the library ws2_32.lib.

If you are using a different platform let me know.

Cheers - Gavin
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by:Aggarwal
ID: 6415944
surely u r working on windows !!!

as we dun need "WSAGetLastError"  on unix !!!including the above said lib will help you !!!

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Expert Comment

by:abesoft
ID: 6427422
The two previous answers were right.  You need to link ws2_32.lib with your exe.

The way to track down an error like this is to find the name of the missing function (by un-mangling it, so if you get an error for _htons@4, then the actual function is htons) and look up the help for that function.  The MSDN/VC++ help will list at the bottom of the page something like this:
  Version: Requires Windows Sockets 1.1 or later.
  Header: Declared in Winsock2.h.
  Library: Use Ws2_32.lib.

and that will tell you which library you need to link.

Hope this helps.
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Expert Comment

by:vo1d
ID: 6437420
add this to your header file:

#include <winsock2.h>
#pragma library( "WS2_32.LIB" )
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by:newmang
ID: 6438883
I think this question has been answered....any response from the original poster?
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Author Comment

by:ronandersen
ID: 6439352
This question was answered
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by:newmang
ID: 6439594
Goodoh! Glad to help

Cheers - Gavin
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by:vo1d
ID: 6440428
:)
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