Tvheadend

Propose a proper fix.

Ah, I see that "virtual:world" has nothing to do with tvheadend. I don't know what that is all about.

But something I just tried was removing " libavresample \" from Makefile line 95 under "FFMPEG_LIBS := \", and it still built and ran with no problems.

I don't know if you're keeping libavresample for legacy reasons (eg, libswresample doesn't exist in older ffmpeg versions), but it sounds like you can be done with libavresample and just stick with libswresample.

Ran into the same problem with --enable-libav when linking to an external ffmpeg that does not build libavresample. Unfortunately, just removing Makefile line 95 did not work for me as there apparently is an explicit dependency to libavresample within plumbing/transcoding.c. Not able to propose a proper fix for this either though. Sorry, Jaroslav...

Martin, here is the some of the config params that I used (it worked for me back then and still now):

--disable-libmfx_static --disable-qsv --disable-nvenc --disable-libx264_static --disable-libx265_static --disable-ffmpeg_static --disable-libvpx_static --disable-libtheora_static --disable-libvorbis_static --disable-libfdkaac_static