[Libav-user] video toolbox encoder support in latest git

[Steve Green]

Results from bisect:

9ef5a2f5f30bdc4ac86275ae4b4708ab4681b21d is the first bad commit
commit 9ef5a2f5f30bdc4ac86275ae4b4708ab4681b21d
Author: Clément Bœsch <cboesch at gopro.com>
Date:   Fri Jul 28 13:39:00 2017 +0200

    build: simplify weak-enabling of autodetected libraries

:100755 100755 b5e3629db0cdba08cc97d60f9b2d1a4d855af895 fea9f956b8c41e204bed03d3047ec334504ae9b6 M	configure


> On Sep 22, 2017, at 8:07 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 
> 2017-09-23 2:03 GMT+02:00 Steve Green <steve.green at flosports.tv>:
>> On Sep 22, 2017, at 7:46 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 
>>> The empty optflags do not look useful.
>> 
>> I wanted to disable compiler optimizations so I could step through code.
> 
> Feel free to use --disable-optimizations.
> (Which of course has implications, I cannot recommend it although
> it should very significantly speed up compilation.)
> 
>> That seemed to work.
> 
> No, I can confirm that with "--optflags=''" you still get default
> (full) optimization.
> 
> Avoid external resources if possible, Carl Eugen
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