[FFmpeg-devel] ABI break in 4.3

[Jan Engelhardt]

On Sunday 2020-07-05 18:18, James Almer wrote:
>>>
>>> Won't that break the entire ABI of anything currently linked, and thus would
>>> require a major bump?
>> 
>> Since 4.3 was sort of a break over 4.2.3 already
>
>No, it wasn't.

Perhaps not on a high level. But for the ELF system, it was a break,
because you used the <SONAME, SYMVER> tuple, specifically <libavcodec.so.58,
LIBAVCODEC_58>, with two _different sets of contained symbols_.

Was it the reason for blender crash? I do not know that, nor do I know the
blender internals, but if it can be ruled out (at the very least, in the
future) that version mixup between $buildhost and $userhost can be the
cause of present or future crashes in blender or otherwise, I'll be damned if I
didn't try.

===

The following changes since commit c2d000ec27af1a5cd5341a67e941e0313879ab18:

  lavc/qsvenc_hevc: add qmax/qmin support for HEVC encoding (2020-07-05 23:43:45 +0800)

are available in the Git repository at:

  git://github.com/jengelh/ffmpeg master

for you to fetch changes up to 3ec24e4e548ecd6d4cc2f11a7d6717548abdadab:

  build: do proper ELF symbol versioning (2020-07-05 18:50:58 +0200)

----------------------------------------------------------------
Jan Engelhardt (1):
      build: do proper ELF symbol versioning

 libavcodec/libavcodec.v       | 254 +++++++++++++++-
 libavdevice/libavdevice.v     |  28 +-
 libavfilter/libavfilter.v     |  78 ++++-
 libavformat/libavformat.v     | 185 +++++++++++-
 libavresample/libavresample.v |  30 +-
 libavutil/libavutil.v         | 555 +++++++++++++++++++++++++++++++++-
 libswresample/libswresample.v |  33 +-
 libswscale/libswscale.v       |  44 ++-
 8 files changed, 1163 insertions(+), 44 deletions(-)