[Ffmpeg-devel] [PATCH] Networking with MingW

[Víctor Paesa]

Hi,
>
> On Mon, 6 Nov 2006, Alex Beregszaszi wrote:
>
>> Hi,
>>
>>> I also made a quick #define change in gxf.c so MingW can build a
>>> shared DLL.  I was getting errors during linking without this change.
>>>
>>> I really hope someone accepts this patch.  I'm trying to convince the
>>> company I work for to move to Linux or at least cross-platform and
>>> this is the best library (in my opinion) for doing the graphics that
>>> we would need.
>>
>> static AVRational fps_tag2avr(int32_t fps) {
>> +#ifndef __MINGW32__
>>     extern const AVRational ff_frame_rate_tab[];
>> +#else
>> +    extern __declspec(dllimport) const AVRational ff_frame_rate_tab[];
>> +#endif
>>     if (fps < 1 || fps > 9) fps = 9;
>>     return ff_frame_rate_tab[9 - fps]; // values have opposite order
>> }
>>
>> What the hell is that?
>
> Good question.  The linker gave an error about "auto-import" and reading
> the man page for ld it said that would fix it.  I believe it's forcing
> that symbol to be exported or imported for some reason, no sure why.  Yes
> it's disgusting, but a lot of Windows programming is.
>

If I recall correctly, this is a bug in binutils.
If you use binutils-2.15.91-20040904-1 upgrade or downgrade them.

Regards,
V?ctor