dev-cpp-users

[Dev-C++] Linking error (help please!)

[de S. <fla...@se...>]

Hi !

I am trying to compile and linking this simple code:

#include <winsock.h>            // winsock.h always needs to be included
#include <stdio.h>
#include <windows.h>

//Prototypen
int startWinsock(void);

int main(int argc, char *argv[])
{
   long rc;
   rc=startWinsock();
   if(rc!=0)
   {
     printf("Error:  startWinsock, error code: %d\n",rc);
     return 1;
   }
   else
   {
     printf("Winsock started!\n");
   }
   return 0;
}

int startWinsock(void)
{
   WSADATA wsa;
   return WSAStartup(MAKEWORD(1,1),&wsa);
}


But I got this error:

c:\meus documentos\projetos\sistema de 
e-mails\source\socketconnection\socket_test\socket_t2.o(.text+0xad):socket_t2.cpp: 
undefined reference to `WSAStartup@8'

I don't know what causes this, do you have any ideas?

Probably it is a silly error.

Tks,

Flavio.
Flavio de Souza
fla...@ne...
ICQ:78458203

Re: [Dev-C++] Linking error (help please!)

[Flavio de S. <fla...@se...>]

Thanks for your response.

I used this parameter to compile the program. But I got the following=20
different message:

g++: -lwsock32: linker input file unused since linking not done

I think this is the right way to follow, but I am still missing something.=
=20
Any ideas?

Tks again,

Flavio.

At 09:01 18/11/01 +1100, you wrote:

>Hi,
>
>I'm not experienced with winsock programming ... but ... did you link
>the winsock library??
>
>Somewhere where you set linker options you will need to add -lwsock32
>
>Ray Smith
>
>
>----- Original Message -----
>From: Fl=E1vio de Souza <fla...@se...>
>To: <dev...@li...>
>Sent: Sunday, November 18, 2001 5:36 AM
>Subject: [Dev-C++] Linking error (help please!)
>
>
> > Hi !
> >
> > I am trying to compile and linking this simple code:
> >
> > #include <winsock.h>            // winsock.h always needs to be included
> > #include <stdio.h>
> > #include <windows.h>
> >
> > file://Prototypen
> > int startWinsock(void);
> >
> > int main(int argc, char *argv[])
> > {
> >    long rc;
> >    rc=3DstartWinsock();
> >    if(rc!=3D0)
> >    {
> >      printf("Error:  startWinsock, error code: %d\n",rc);
> >      return 1;
> >    }
> >    else
> >    {
> >      printf("Winsock started!\n");
> >    }
> >    return 0;
> > }
> >
> > int startWinsock(void)
> > {
> >    WSADATA wsa;
> >    return WSAStartup(MAKEWORD(1,1),&wsa);
> > }
> >
> >
> > But I got this error:
> >
> > c:\meus documentos\projetos\sistema de
> >
>e-mails\source\socketconnection\socket_test\socket_t2.o(.text+0xad):socket_=
t
>2.cpp:
> > undefined reference to `WSAStartup@8'
> >
> > I don't know what causes this, do you have any ideas?
> >
> > Probably it is a silly error.
> >
> > Tks,
> >
> > Flavio.
> > Flavio de Souza
> > fla...@ne...
> > ICQ:78458203
> >
>
>
>---------------------------------------------------------------------------=
-
>----
>
>
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.295 / Virus Database: 159 - Release Date: 01/11/01
> >
>
>
>
>---
>Incoming mail is certified Virus Free.
>Checked by AVG anti-virus system (http://www.grisoft.com).
>Version: 6.0.295 / Virus Database: 159 - Release Date: 01/11/01

Re: [Dev-C++] Linking error (help please!)

[Kevin W. <ke...@me...>]

Try including  winsock2.h  instead of  winsock.h

Kev.

----- Original Message -----
From: Flávio de Souza <fla...@se...>
To: <dev...@li...>
Sent: Saturday, November 17, 2001 6:36 PM
Subject: [Dev-C++] Linking error (help please!)


> Hi !
>
> I am trying to compile and linking this simple code:
>
> #include <winsock.h>            // winsock.h always needs to be included
> #include <stdio.h>
> #include <windows.h>
>
> //Prototypen
> int startWinsock(void);
>
> int main(int argc, char *argv[])
> {
>    long rc;
>    rc=startWinsock();
>    if(rc!=0)
>    {
>      printf("Error:  startWinsock, error code: %d\n",rc);
>      return 1;
>    }
>    else
>    {
>      printf("Winsock started!\n");
>    }
>    return 0;
> }
>
> int startWinsock(void)
> {
>    WSADATA wsa;
>    return WSAStartup(MAKEWORD(1,1),&wsa);
> }
>
>
> But I got this error:
>
> c:\meus documentos\projetos\sistema de
>
e-mails\source\socketconnection\socket_test\socket_t2.o(.text+0xad):socket_t
2.cpp:
> undefined reference to `WSAStartup@8'
>
> I don't know what causes this, do you have any ideas?
>
> Probably it is a silly error.
>
> Tks,
>
> Flavio.
> Flavio de Souza
> fla...@ne...
> ICQ:78458203
>


----------------------------------------------------------------------------
----


>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.295 / Virus Database: 159 - Release Date: 01/11/01
>

Re: [Dev-C++] Linking error (help please!)

[Flavio de S. <fla...@se...>]

I did it, but I had to do one more thing: change the main() function to the=
=20
following.

int STDCALL
WinMain (HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmd, int nShow)

Then it worked well.

Tks everybody that helped me.

Flavio.


At 09:44 19/11/01 +0100, you wrote:

> > :\meus documentos\projetos\sistema de
> >
>e-mails\source\socketconnection\socket_test\socket_t2.o(.text+0xad):socket_=
t
>2.cpp:
> > undefined reference to `WSAStartup@8'
>
>you need to add libwsock32.a to your projec. Go to Project->project
>option->Load object files and select libwsock32.a from lib directory.
>---------------------------------------------------------------------------=
-
>---
>If debugging is the process of removing bugs,
>then programming must be the process of putting them in.
>---------------------------------------------------------------------------=
-
>---

Flavio de Souza
fla...@ne...
ICQ:78458203
" Fazendo o que est=E1 ao nosso alcance, beneficiamos a todos.
Tentando apenas ter id=E9ias para salvar o mundo, n=E3o ajudamos
nem a n=F3s mesmos."