Using sockets winapi with Qt

Question

I am using an API of communicating with remote server and it's only available in C. I cannot rewrite it, because it's a very specific protocol, and it'll take too much effort.

The API providedIt uses standard Winsock2 scheme. So, in order to work with it I added

LIBS += C:\\QtSDK\\mingw\\lib\\libws2_32.a

to my project's .pro file.

However, when the program accesses any WinSock function, even WSAStartup, it crashes immediately with the error message SIGILL -- Illegal Instruction. What am I doing wrong?

-1 for "it crashes immediately". For the love of god, please tell us what the real error message was! — David Heffernan, Jul 06 '11 at 22:14

score 0 · Answer 1 · answered Jul 07 '11 at 03:43

0

Are you compiling this API yourself or do you have it as an object/header pair? If by yourself, is it with QtSDK\MinGW? Do you point it to the winsock headers of MinGW?

A good first test would be to try and compile a simple driver main using this library, with QtSDK\MinGW as standalone, without Qt's qmake. Once you make that work, porting into your Qt project should be easy.

answered Jul 07 '11 at 03:43

Eli Bendersky

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I add it as sources + headers, so it's compiled together with the project. – Ivan Jul 07 '11 at 15:26
can you compile it separately and link properly to make it work, without Qt? – Eli Bendersky Jul 07 '11 at 15:33

Using sockets winapi with Qt

1 Answers1