[FFmpeg-devel] On software using non-public symbols

[Reinhard Tartler]

On Sun, Jan 23, 2011 at 21:59:55 (CET), Alex Converse wrote:

> On Sun, Jan 23, 2011 at 12:41 AM, Stefano Sabatini
> <stefano.sabatini-lala at poste.it> wrote:
>> On date Sunday 2011-01-23 06:46:54 +0100, Diego Elio Petten? encoded:
>>> Hi all,
>>>
>>> I was asked last night if I could look into which software is currently
>>> using non-public symbols; I've since added an elfgrep script to my
>>> ruby-elf[1] and here is its result, as applied over the Gentoo tinderbox
>>> instance I maintain (which lists 12909 packages compiled and installed).
>>>
>>> The attachment reports the details for which file uses which symbol,
>>> while the relationship with (Gentoo) packages is as follows:
>> [...]
>>> /usr/bin/ffprobe U dump_format at LIBAVFORMAT_52
>>> /usr/bin/ffprobe U parse_date at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U url_fopen at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U dump_format at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U url_fsize at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U parse_date at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U url_exist at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U url_set_interrupt_cb at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U url_fclose at LIBAVFORMAT_52
>>> /usr/bin/ffmpeg U url_ftell at LIBAVFORMAT_52
>>> /usr/bin/avidemux2_cli U url_fclose at LIBAVFORMAT_52
>>> /usr/bin/avidemux2_cli U dump_format at LIBAVFORMAT_52
>>> /usr/bin/avidemux2_cli U url_fopen at LIBAVFORMAT_52
>> [....]
>>
>> Amongst the many, parse_date(), dump_format(), url_*() are *public*
>> symbols defined in the public headers, although they're not properly
>> av_ prefixed.
>> --
>
> Then they should be renamed for the next bump.

No need to wait for that. We can already rename them now with
compatibility wrappers, and drop the wrappers on the next major bump.


-- 
Gruesse/greetings,
Reinhard Tartler, KeyID 945348A4