Am 03.06.2017 um 14:19 schrieb Jan Engelhardt:
On Saturday 2017-06-03 14:11, wm4 wrote:
The layout of struct AVCodec changed. Four function pointers were
inserted in the middle, shifting void (*flush) to a new address. The
size of AVCodec also changed, which would have required a full MAJOR
bump.
Those aren't even public fields.
Fair enough, seems documented after more looking around.
Anyway, in general, I recommend not pretending that FFmpeg has ABI
compatibility. Especially not across major releases
That would be fine with me - could ffmpeg then ensure that the
major is in fact bumped on major releases? In distro context,
a bump is easier to swallow than a non-bump..
It is made sure that the public ABI does not break between major
releases, this the major version is not bumped.
The problem in practice is that _a lot_ of downstream library users
misuse the API, using non-public fields and what not, and still end up
breaking, most commonly at ffmpeg major releases.
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