Bug 510516 – media-video/ffmpeg-2.2.2 - libavfilter/libavfilter.so: undefined reference to `dlsym'

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Martin von Gagern 2014-05-16 23:46:13 UTC]

x86_64-pc-linux-gnu-gcc -Llibavcodec -Llibavdevice -Llibavfilter -Llibavformat -
Llibavresample -Llibavutil -Llibpostproc -Llibswscale -Llibswresample -Wl,--as-n
eeded  -Wl,--as-needed -Wl,--warn-common -Wl,-rpath-link=libpostproc:libswresamp
le:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample -o tools/graph2dot tools/graph2dot.o -lavfilter -lswresample -lavformat -lavcodec -lswresample -lavresample -lavcodec -lavcodec -lavcodec -lavcodec -lavcodec -lavformat -lavcodec -lavcodec -lswresample -lpostproc -lavformat -lavcodec -lswscale -lavresample -lswscale -lswscale -lavcodec -lswscale -lswresample -lavutil -lXv -lX11 -lXext -lXfixes -lXext -lX11 -ljack -lasound -lSDL -lpthread -lnettle -lhogweed -lgmp -lGL -lxvidcore -lx264 -lvpx -lvpx -lvpx -lvpx -lvorbisenc -lvorbis -logg -lvo-aacenc -ltheoraenc -ltheoradec -logg -lspeex -lopus -lopenjpeg -lmp3lame -lfreetype -lgnutls -lm -lbz2 -lz -pthread  
libavfilter/libavfilter.so: undefined reference to `dlsym'
libavfilter/libavfilter.so: undefined reference to `dlerror'
libavfilter/libavfilter.so: undefined reference to `dlopen'
libavfilter/libavfilter.so: undefined reference to `dlclose'
collect2: error: ld returned 1 exit status
/var/tmp/portage/media-video/ffmpeg-2.2.2/work/ffmpeg-2.2.2/library.mak:106: recipe for target 'tools/graph2dot' failed
make: *** [tools/graph2dot] Error 1

It seems that call is missing a -ldl. Or perhaps the linker invocation for libavfilter.so should have that library added. Not sure how to patch that into the build system, though.

[Comment 1 Martin von Gagern 2014-05-16 23:51:07 UTC]

Created attachment 377098 [details]
emerge --info

[Comment 2 Jeroen Roovers (RETIRED) 2014-05-17 04:31:21 UTC]

Please attach the entire build log to this bug report.

[Comment 3 Martin von Gagern 2014-05-17 05:40:20 UTC]

Created attachment 377112 [details]
media-video:ffmpeg-2.2.2:20140516-195330.log.gz

(In reply to Jeroen Roovers from comment #2)
> Please attach the entire build log to this bug report.

Sorry, I thought I had attached it in comment #0. But apparently the attachment was rejected due to being too big, while the bug report itself got accepted. So now I had to compress the file.

[Comment 4 Saul Peebsen 2014-05-18 20:16:42 UTC]

Exactly same errors here.

[Comment 5 Ilya Ershov 2014-05-19 19:04:46 UTC]

I get exactly the same error to. Building like this (found on gentoo forums) works, but, of course, is not an option to leave it like that:

FFTOOLS="aviocat cws2fws ffeval ismindex pktdumper qt-faststart trasher" emerge -1 ffmpeg

[Comment 6 Alexis Ballier 2014-05-20 17:38:44 UTC]

you're building with USE="ladspa -frei0r", right ?

[Comment 7 Ilya Ershov 2014-05-20 17:42:54 UTC]

(In reply to Alexis Ballier from comment #6)
> you're building with USE="ladspa -frei0r", right ?

Yes (at least me).

[Comment 8 Alexis Ballier 2014-05-20 18:26:10 UTC]

(In reply to Ilya Ershov from comment #7)
> (In reply to Alexis Ballier from comment #6)
> > you're building with USE="ladspa -frei0r", right ?
> 
> Yes (at least me).

fixed