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@Neil

I've tried it too and fail.

I've tried the following:

...

uselibav=""
if [ -f /usr/include/libavresample/avresample.h ]; then
    echo "libavresample found, enabling use of libav!"
    CFLAGS="$CFLAGS -Wno-error=format-truncation"
else

...

I get the error message, see @pokabjoern.

What am I doing wrong?

thanks in advance

Thanks @pokabjoern - now I can build tvheadend also :-)

I had to add

CFLAGS="$CFLAGS -Wno-error=format-truncation"

CC              src/epggrab/module/xmltv.o
src/epggrab/module/xmltv.c: In Funktion »_xmltv_parse«:
src/epggrab/module/xmltv.c:197:47: Fehler: Ausgabe der »%s«-Direktive könnte abgeschnitten sein, beim Schreiben von 2 bis 2147483645 Bytes in eine Region der Größe 115 [-Werror=format-truncation=]
  197 |   snprintf(buf, sizeof(buf)-1, "ddprogid://%s/%s", mod->id, s);
      |                                               ^~
src/epggrab/module/xmltv.c:197:3: Anmerkung: »snprintf« hat 15 oder mehr Bytes (angenommen 2147483658) in das Ziel der Größe 127 ausgegeben
  197 |   snprintf(buf, sizeof(buf)-1, "ddprogid://%s/%s", mod->id, s);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: Alle Warnungen werden als Fehler behandelt
make: *** [Makefile:643: /home/sascha/tvheadend/src/tvheadend-4.2.8/build.linux/src/epggrab/module/xmltv.o] Fehler 1
==> FEHLER: Ein Fehler geschah in build().
    Breche ab...

libavresample.so is shows as an optional dependency. Is it worth flagging that it needs to be installed when tvheadend is built if you want transcoding support?

Hello, thank you for this package. I wanted to say that the compilation via yay doesn't work. I had to go to ~/.cache/yay/tvheadend and execute makepkg to successfully compile the program.

The error via yay is :

In function ‘transcoder_init_video’,
    inlined from ‘transcoder_start’ at src/plumbing/transcoding.c:2006:12,
    inlined from ‘transcoder_input’ at src/plumbing/transcoding.c:2061:10:
src/plumbing/transcoding.c:1807:3: error: ‘strncpy’ output may be truncated copying 127 bytes from a string of length 127 [-Werror=stringop-truncation]
 1807 |   strncpy(codec_list, tp->tp_src_vcodec, sizeof(tp->tp_src_vcodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC              src/descrambler/emm_reass.o
CC              src/descrambler/capmt.o
CC              src/descrambler/constcw.o
CC              src/descrambler/ffdecsa/ffdecsa_interface.o
src/plumbing/transcoding.c: In function ‘transcoder_set_properties’:
src/plumbing/transcoding.c:2133:3: error: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Werror=stringop-truncation]
 2133 |   strncpy(tp->tp_vcodec, props->tp_vcodec, sizeof(tp->tp_vcodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2134:3: error: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Werror=stringop-truncation]
 2134 |   strncpy(tp->tp_vcodec_preset, props->tp_vcodec_preset, sizeof(tp->tp_vcodec_preset)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2135:3: error: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Werror=stringop-truncation]
 2135 |   strncpy(tp->tp_acodec, props->tp_acodec, sizeof(tp->tp_acodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2136:3: error: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Werror=stringop-truncation]
 2136 |   strncpy(tp->tp_scodec, props->tp_scodec, sizeof(tp->tp_scodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2144:3: error: ‘strncpy’ output may be truncated copying 127 bytes from a string of length 127 [-Werror=stringop-truncation]
 2144 |   strncpy(tp->tp_src_vcodec, props->tp_src_vcodec, sizeof(tp->tp_src_vcodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC              src/descrambler/ffdecsa/ffdecsa_int.o
cc1: all warnings being treated as errors
make: *** [Makefile:643: /home/cthulhu/.cache/yay/tvheadend/src/tvheadend-4.2.8/build.linux/src/plumbing/transcoding.o] Error 1
make: *** Waiting for unfinished jobs....
==> ERROR: A failure occurred in build().
    Aborting...
Error making: tvheadend

Using makepkg directly, errors become warnings:

In function ‘transcoder_init_video’,
    inlined from ‘transcoder_start’ at src/plumbing/transcoding.c:2006:12,
    inlined from ‘transcoder_input’ at src/plumbing/transcoding.c:2061:10:
src/plumbing/transcoding.c:1807:3: warning: ‘strncpy’ output may be truncated copying 127 bytes from a string of length 127 [-Wstringop-truncation]
 1807 |   strncpy(codec_list, tp->tp_src_vcodec, sizeof(tp->tp_src_vcodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC              src/descrambler/capmt.o
CC              src/descrambler/constcw.o
CC              src/descrambler/ffdecsa/ffdecsa_interface.o
CC              src/descrambler/ffdecsa/ffdecsa_sse2.o
src/plumbing/transcoding.c: In function ‘transcoder_set_properties’:
src/plumbing/transcoding.c:2133:3: warning: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
 2133 |   strncpy(tp->tp_vcodec, props->tp_vcodec, sizeof(tp->tp_vcodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2134:3: warning: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
 2134 |   strncpy(tp->tp_vcodec_preset, props->tp_vcodec_preset, sizeof(tp->tp_vcodec_preset)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2135:3: warning: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
 2135 |   strncpy(tp->tp_acodec, props->tp_acodec, sizeof(tp->tp_acodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2136:3: warning: ‘strncpy’ output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
 2136 |   strncpy(tp->tp_scodec, props->tp_scodec, sizeof(tp->tp_scodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/plumbing/transcoding.c:2144:3: warning: ‘strncpy’ output may be truncated copying 127 bytes from a string of length 127 [-Wstringop-truncation]
 2144 |   strncpy(tp->tp_src_vcodec, props->tp_src_vcodec, sizeof(tp->tp_src_vcodec)-1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC              src/descrambler/libaesdec/libaesdec.o
CC              src/dbus.o

Hello, Now installation without issues . THANKS !!!!

@LuckLX : After the patch it builds just fine. Many thanks for the response, time and work you spent.

@LuckLX: There is an upstream bug: https://tvheadend.org/issues/5862. I'm sure they would appreciate your patch.

I took the lazy route with the tvheadend-git package and just built with the "-fcommon" flag turned on.

Apparently, GCC 10 activated -fno-common by default which caused some issues building up until 4.2.8-3.

I added a patch in 4.2.8-4 so it should be able to build again. Please let me know if you encounter issues.

Hi, It will not build. The following is returned in makepkg -si

collect2: error: ld returned 1 exit status make: *** [Makefile:638: /home/user/Downloads/aur-packages/tvheadend/src/tvheadend-4.2.8/build.linux/tvheadend] Error 1 ==> ERROR: A failure occurred in build(). Aborting...

Thanks in advance for looking into it. Cheers