[FFmpeg-devel] [PATCH] doc/general.texi: add note about 32-bit GCC builds of AviSynth+

Gyan ffmpeg at gyani.pro
Fri May 3 19:36:52 EEST 2019



On 02-05-2019 10:00 PM, Stephen Hutchinson wrote:
> On 3/31/2019 8:12 PM, Stephen Hutchinson wrote:
>> ---
>> The text has been updated to reflect that 32-bit builds of FFmpeg
>> in general don't default to AviSynth+GCC compatibility.
>>   doc/general.texi | 15 +++++++++++++++
>>   1 file changed, 15 insertions(+)
>>
>> diff --git a/doc/general.texi b/doc/general.texi
>> index bafa1e2ea2..6c1acb517c 100644
>> --- a/doc/general.texi
>> +++ b/doc/general.texi
>> @@ -51,6 +51,21 @@ For Windows, supported AviSynth variants are
>>   For Linux and OS X, the supported AviSynth variant is
>>   @url{https://github.com/avxsynth/avxsynth, AvxSynth}.
>>   + at float NOTE
>> +In 2016, AviSynth+ added support for building with GCC. However, due to
>> +the eccentricities of Windows' calling conventions, 32-bit GCC builds
>> +of AviSynth+ are not compatible with typical 32-bit builds of FFmpeg.
>> +
>> +By default, FFmpeg assumes compatibility with 32-bit MSVC builds of
>> +AviSynth+ since that is the most widely-used and entrenched build
>> +configuration.  Users can override this and enable support for 32-bit
>> +GCC builds of AviSynth+ by passing @code{-DAVSC_WIN32_GCC32} to
>> + at code{--extra-cflags} when configuring FFmpeg.
>> +
>> +64-bit builds of FFmpeg are not affected, and can use either MSVC or
>> +GCC builds of AviSynth+ without any special flags.
>> + at end float
>> +
>>   @float NOTE
>>   AviSynth and AvxSynth are loaded dynamically.  Distributors can 
>> build FFmpeg
>>   with @code{--enable-avisynth}, and the binaries will work 
>> regardless of the
>
> Ping #2 for the sixth of the six patches.

Will apply this one tomorrow morning.

Gyan


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