Build failing with ffmpeg on latest Bullseye

[nmaas87]

Dear xbelanch,

sadly one cannot compile OBS on the latest Bullseye release, it fails at building ffmpeg:

CC      libavcodec/lcldec.o
CC      libavcodec/lclenc.o
CC      libavcodec/libaomdec.o
CC      libavcodec/libaomenc.o
CC      libavcodec/libdav1d.o
libavcodec/libdav1d.c: In function ‘libdav1d_init’:
libavcodec/libdav1d.c:143:7: error: ‘Dav1dSettings’ has no member named ‘n_tile_threads’; did you mean ‘n_threads’?
  143 |     s.n_tile_threads = dav1d->tile_threads
      |       ^~~~~~~~~~~~~~
      |       n_threads
In file included from ./libavutil/avutil.h:296,
                 from ./libavutil/avassert.h:31,
                 from libavcodec/libdav1d.c:24:
libavcodec/libdav1d.c:145:52: error: ‘DAV1D_MAX_TILE_THREADS’ undeclared (first use in this function); did you mean ‘DAV1D_MAX_TILE_ROWS’?
  145 |                      : FFMIN(floor(sqrt(threads)), DAV1D_MAX_TILE_THREADS);
      |                                                    ^~~~~~~~~~~~~~~~~~~~~~
./libavutil/common.h:96:28: note: in definition of macro ‘FFMIN’
   96 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
      |                            ^
libavcodec/libdav1d.c:145:52: note: each undeclared identifier is reported only once for each function it appears in
  145 |                      : FFMIN(floor(sqrt(threads)), DAV1D_MAX_TILE_THREADS);
      |                                                    ^~~~~~~~~~~~~~~~~~~~~~
./libavutil/common.h:96:28: note: in definition of macro ‘FFMIN’
   96 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
      |                            ^
libavcodec/libdav1d.c:146:6: error: ‘Dav1dSettings’ has no member named ‘n_frame_threads’
  146 |     s.n_frame_threads = dav1d->frame_threads
      |      ^
In file included from ./libavutil/avutil.h:296,
                 from ./libavutil/avassert.h:31,
                 from libavcodec/libdav1d.c:24:
libavcodec/libdav1d.c:148:48: error: ‘Dav1dSettings’ has no member named ‘n_tile_threads’; did you mean ‘n_threads’?
  148 |                       : FFMIN(ceil(threads / s.n_tile_threads), DAV1D_MAX_FRAME_THREADS);
      |                                                ^~~~~~~~~~~~~~
./libavutil/common.h:96:22: note: in definition of macro ‘FFMIN’
   96 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
      |                      ^
libavcodec/libdav1d.c:148:65: error: ‘DAV1D_MAX_FRAME_THREADS’ undeclared (first use in this function); did you mean ‘DAV1D_MAX_THREADS’?
  148 |                       : FFMIN(ceil(threads / s.n_tile_threads), DAV1D_MAX_FRAME_THREADS);
      |                                                                 ^~~~~~~~~~~~~~~~~~~~~~~
./libavutil/common.h:96:28: note: in definition of macro ‘FFMIN’
   96 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
      |                            ^
libavcodec/libdav1d.c:148:48: error: ‘Dav1dSettings’ has no member named ‘n_tile_threads’; did you mean ‘n_threads’?
  148 |                       : FFMIN(ceil(threads / s.n_tile_threads), DAV1D_MAX_FRAME_THREADS);
      |                                                ^~~~~~~~~~~~~~
./libavutil/common.h:96:40: note: in definition of macro ‘FFMIN’
   96 | #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
      |                                        ^
libavcodec/libdav1d.c:150:13: error: ‘Dav1dSettings’ has no member named ‘n_frame_threads’
  150 |            s.n_frame_threads, s.n_tile_threads);
      |             ^
libavcodec/libdav1d.c:150:33: error: ‘Dav1dSettings’ has no member named ‘n_tile_threads’; did you mean ‘n_threads’?
  150 |            s.n_frame_threads, s.n_tile_threads);
      |                                 ^~~~~~~~~~~~~~
      |                                 n_threads
libavcodec/libdav1d.c: At top level:
libavcodec/libdav1d.c:390:94: error: ‘DAV1D_MAX_TILE_THREADS’ undeclared here (not in a function); did you mean ‘DAV1D_MAX_TILE_ROWS’?
  390 |     { "tilethreads", "Tile threads", OFFSET(tile_threads), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, DAV1D_MAX_TILE_THREADS, VD },
      |                                                                                              ^~~~~~~~~~~~~~~~~~~~~~
      |                                                                                              DAV1D_MAX_TILE_ROWS
CC      libavcodec/libfdk-aacdec.o
CC      libavcodec/libfdk-aacenc.o
libavcodec/libdav1d.c:391:97: error: ‘DAV1D_MAX_FRAME_THREADS’ undeclared here (not in a function); did you mean ‘DAV1D_MAX_THREADS’?
  391 |     { "framethreads", "Frame threads", OFFSET(frame_threads), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, DAV1D_MAX_FRAME_THREADS, VD },
      |                                                                                                 ^~~~~~~~~~~~~~~~~~~~~~~
      |                                                                                                 DAV1D_MAX_THREADS
make: *** [ffbuild/common.mak:59: libavcodec/libdav1d.o] Error 1
make: *** Waiting for unfinished jobs....

real    64m26.345s
user    129m6.881s
sys     15m17.536s
pi@raspberrypi:~/OBS4Pi $

I add the log here: build_failure.txt - everything before worked perfectly. Maybe you got an idea how to fix it?

Thanks a lot!

Nico

[nmaas87]

Removing the libdav1d option from building ffmpeg solved the problem and it compiles now succesfully.