问题
I am using EVC++ and I want to compile the program which uses the sockets. I've included
#include <winsock2.h>
And I have included in project properties a path to Ws2.lib But still get the error at link step:
error LNK2019: unresolved external symbol WSAStartup referenced in function ...
How to resolve this problem?
回答1:
#pragma comment(lib,"WS2_32")
after all #include's
回答2:
You haven't linked your program with the winsock library. The Winsock 2 library is called ws2_32.lib (static) or ws2_32.dll (dynamic). It should already be on your system; you just need to tell your compiler/linker to link your program against it. The method of doing this varies by compiler, and unfortunately I'm not familiar with EVC++.
回答3:
Have seen this error in codeblock IDE using MinGW. Tried many ways but finally found this solution.
Add(your the path for MinGW installed in your system) C:\Program Files (x86)\CodeBlocks\MinGW\lib\libws2_32 C:\Program Files (x86)\CodeBlocks\MinGW\lib\libwsock32 in codeblock IDE.
How to add: Go to project. build options. Linker setting. click add of link library.
And its done.
来源：https://stackoverflow.com/questions/3359283/wsastartup-link-error