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On 21/12/2014 11:58 a.m., Eldar Akchurin wrote:
> Hi Amos,
>
> Hmm, after checking I found out that this fix works only for 64
> bit. When I try this on 32, both mingw on Cygwin and Ubuntu cannot
> identify presence of getaddrinfo.
>
> It seems the 32 bit version of libws2_32 is compiled with
> "stdcall", i.e. the following works:
>
> #ifdef __cplusplus extern "C" #endif char
> __attribute__((__stdcall__)) getaddrinfo(int, int, int, int); //
>
> // AUTOCONF tries out the below one (which does not mingle @16) //
> char getaddrinfo(); // return getaddrinfo();
>
> int main () { return getaddrinfo(0,0,0,0); ; return 0; }
>
> I also found the following report, which kind of confirms what I
> see (https://patches.libav.org/patch/545/): This moves
> network_extralibs setup before use so that the link test works
> correctly on mingw-w64. mingw32 still fails to detect it due to
> calling convention differences; getaddrinfo() is STDCALL, so it is
> mangled as getaddrinfo@16 on x86.
>
> Unfortunately, my background is windows, so I'm new to autoconf and
> all unix business. What do you think will be the right approach
> here? Maybe AC_CECK_DECL instead of AC_REPLACE_FUNC for getaddrinfo
> (and maybe some other funcs declared in the same lib)?
>
Aha. That explains it, my build VM is an old 32-bit.
AC_CECK_DECL might work. getaddrinfo/getnameinfo/inet_ntop/inet_pton
are the key ones for IP parsing. If not a full replacement lookup macro.
I am going to be delving into the configure.ac logics to add some new
definitions for Solaris IP-Filter after the holidays. Might as well
write a new one for Windows getaddrinfo() while I'm doing that.
> Thank you very much for all your help, really appreciate it!
>
> --e
No, thank you for yours. I have been procrastinating a bit much on
this project.
Amos
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