Compilation fails for --disable-everything --enable-outdev=alsa
|Reported by:||skierpage||Owned by:|
|Blocking:||Reproduced by developer:||yes|
|Analyzed by developer:||no|
(I'm building from git to debug some QCELP audio playback problems.)
From "Get FFmpeg" I downloaded git snapshot. I don't need all of ffmpeg so I tried
% ./configure --prefix=/home/skierpage/src/ffmpeg --disable-network --disable-indevs
This errors with
LD ffmpeg_g libavdevice/libavdevice.a(alsa-audio-common.o): In function `ff_alsa_close': /home/skierpage/src/ffmpeg-HEAD-9a9ceb8/libavdevice/alsa-audio-common.c:322: undefined reference to `ff_timefilter_destroy' collect2: ld returned 1 exit status Reaping losing child 0x01d24890 PID 11332 make: *** [ffmpeg_g] Error 1
It's building alsa because configure detects HAVE_ALSA_ASOUNDLIB_H on my system, so config.mak sets CONFIG_ALSA_OUTDEV=yes. At first I thought the problem was, like like libavdevice/jack-audio.c , libavdevice/alsa-audio-common.c needs to add
but that doesn't help.
It seems the problem is libavformat's Makefile only compiles in timefilter.c if CONFIG_ALSA_INDEV is set. But you still need timefilter if you have no input device named alsa (e.g. because you configure with --disable-indevs) but you have an alsa outdev. A dumb patch that allows make to complete and results in working avconv is
--- libavformat/Makefile.org 2011-09-17 13:36:43.000000000 -0700 +++ libavformat/Makefile 2011-09-17 18:00:02.698529430 -0700 @@ -347,6 +347,7 @@ # libavdevice dependencies OBJS-$(CONFIG_ALSA_INDEV) += timefilter.o +OBJS-$(CONFIG_ALSA_OUTDEV) += timefilter.o OBJS-$(CONFIG_JACK_INDEV) += timefilter.o
I suspect if configure detects Jack audio and you've disabled input devices, the Makefile will need a similar line for CONFIG_JACK_OUTDEV.
I hope this helps. Thank you for ffmpeg's massive AV format support.
Change History (2)
comment:1 Changed 5 years ago by cehoyos
- Reproduced by developer set
- Status changed from new to open
- Summary changed from libavformat needs timefilter for OUTDEV as well as INDEV to Compilation fails for --disable-everything --enable-outdev=alsa