[FFmpeg-devel] duplicate symbol '_dec_init' in: fftools/ffmpeg_dec.o

[Gnattu OC]

Can you try to change the `BD_PRIVATE` to `__attribute__((visibility("hidden")))` in the line defines `dec_init` src/libbluray/disc/dec.h then recompile libbluray to see if it fixes the linking issue?

> On Mar 17, 2024, at 05:09, Helmut K. C. Tessarek <tessarek at evermeet.cx> wrote:
> 
> Hi,
> 
> On 2024-03-16 10:26, Christopher Degawa wrote:
>> Seems the conflict comes from
>> https://code.videolan.org/videolan/libbluray/-/blob/master/src/libbluray/disc/dec.c?ref_type=heads#L287
>>  and
>> https://github.com/FFmpeg/FFmpeg/commit/c4de5778bceab3c15f1239f1f16816749a7fd3b6
>> Perhaps you could also try asking libbluray if they could use an internal
>> prefix. Otherwise you might need to do a rename of that function on
>> ffmpeg's side.
> 
> Hmm, this commit in ffmpeg broke the possibility to link ffmpeg with libbluray. Just to make this perfectly clear, before that commit it worked without issues.
> 
> This means that nobody is able to use libbluray and ffmpeg from this point forward. I am sorry, but this commit should be reverted.
> 
> The commit message reads: Rename dec_open to dec_init(), as it is more descriptive of its new purpose.
> 
> Who cares about how descriptive it is as long as it works. Now it doesn't. This was not a change to implement a feature or fix a bug, but a simple refactor, because somebody didn't like the name.
> 
> In reality I agree with you that it might be better for libbluray to use a prefix/namespace or whatever.  But until then, ffmpeg should still be able to be linked with libbluray.
> 
> Is my standpoint unreasonable? If so, why?
> 
> Cheers,
>  K. C.
> 
> -- 
> regards Helmut K. C. Tessarek              KeyID 0x172380A011EF4944
> Key fingerprint = 8A55 70C1 BD85 D34E ADBC 386C 1723 80A0 11EF 4944
> 
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>   Thou shalt not follow the NULL pointer for chaos and madness
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