IPv6 Link error

Thread View: borland.public.cppbuilder.internet.socket

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4 total messages Started by Johnny Willemsen Fri, 02 Sep 2005 11:05

#3568

Author: Johnny Willemsen
Date: Fri, 02 Sep 2005 11:05

30 lines
1739 bytes

Hi,

We have code as following:
          if (ip4 == INADDR_LOOPBACK)
            {
              in6_addr ip6 = in6addr_loopback;
              ACE_OS::memcpy (&this->inet_addr_.in6_.sin6_addr,
                              &ip6,
                              sizeof (ip6));
              return 0;
            }

in6addr_loopback is defined in ws2tcpip.h as following:
extern const struct in6_addr in6addr_any;
extern const struct in6_addr in6addr_loopback;

When we now link our library we get the following link errors. How can we 
resolve them?
Error: Unresolved external '_in6addr_any' referenced from 
C:\ACE\LATEST\ACE_WRAPPERS\ACE\OBJ\ACE\DYNAMIC\DEBUG\INET_ADDR
.OBJ
Error: Unresolved external '_in6addr_loopback' referenced from 
C:\ACE\LATEST\ACE_WRAPPERS\ACE\OBJ\ACE\DYNAMIC\DEBUG\INET
_ADDR.OBJ

** error 2 ** deleting ..\lib\ACE_bd.dll

Regards,

Johnny

Re: IPv6 Link error

#3569

Author: Jonathan Benedicto
Date: Fri, 02 Sep 2005 12:35

10 lines
1150 bytes

"Johnny Willemsen" <jwillemsen@remedy.nl> wrote in message 
news:431831d7$1@newsgroups.borland.com...
> When we now link our library we get the following link errors. How can we 
> resolve them?

Try adding ws2_32.lib from your BCB\Lib dir to the project.

HTH

Jonathan

Re: IPv6 Link error

#3570

Author: Johnny Willemsen
Date: Fri, 02 Sep 2005 13:15

20 lines
1532 bytes

Hi,

We have it there already because we have a lot of IPv4 code that works 
without problems, only with IPv6 we now get link errors.

Johnny

"Jonathan Benedicto" <incorrect@no.server> wrote in message 
news:431846fc$1@newsgroups.borland.com...
> "Johnny Willemsen" <jwillemsen@remedy.nl> wrote in message 
> news:431831d7$1@newsgroups.borland.com...
>> When we now link our library we get the following link errors. How can we 
>> resolve them?
>
> Try adding ws2_32.lib from your BCB\Lib dir to the project.
>
> HTH
>
> Jonathan
>

Re: IPv6 Link error

#3571

Author: Jonathan Benedicto
Date: Fri, 02 Sep 2005 13:50

20 lines
1822 bytes

"Johnny Willemsen" <jwillemsen@remedy.nl> wrote in message 
news:4318502b$1@newsgroups.borland.com...
> We have it there already because we have a lot of IPv4 code that works 
> without problems, only with IPv6 we now get link errors.

Ok, thanks to FileZilla / Google 
(http://cvs.sourceforge.net/viewcvs.py/filezilla/FileZilla3/src/putty/windows/winnet.c?rev=1.2) 
<g>, you might have a solution.

Define them like this:

const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;

Also, those structs are inside the MS w2_32.lib file, but not in Borland's. 
I suspect that MS decided to use a static library.

HTH

Jonathan

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