Bug 409047

Summary:	media-video/ffmpeg-0.10.2 - libavfilter/libavfilter.so: undefined reference to `dlopen'
Product:	Gentoo Linux	Reporter:	Dmitry Derevyanko <nrndda>
Component:	Current packages	Assignee:	Gentoo Media-video project <media-video>
Status:	RESOLVED FIXED
Severity:	normal	CC:	graham, massimobalestra
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://www.gentoo.org/doc/en/gcc-upgrading.xml
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	399215
Attachments:	emerge --info ffmpeg's build.log ffmpeg's build.log (now gunziped) config.log

Description Dmitry Derevyanko 2012-03-20 18:55:21 UTC

Ffmpeg-0.10.2 doesn't compile with glibc-2.15 and sys-devel/gcc-4.6.2:
libavfilter/libavfilter.so: undefined reference to `dlopen'
libavfilter/libavfilter.so: undefined reference to `dlclose'
libavfilter/libavfilter.so: undefined reference to `dlsym'
collect2: ld returned 1 exit status

ffpmeg-0.10 compiles successful.
Revdep-rebuild and emerge -1 sys-devel/gcc glibc doesn't helped.

Reproducible: Always

Steps to Reproduce:
1.Emerge =glibc-2.15 =sys-devel/gcc-4.6.2
2.Emerge =ffmpeg-0.10.2
3.ld error
Actual Results:  
collect2: ld returned 1 exit status

Expected Results:  
Compiles successfully.

Comment 1 Dmitry Derevyanko 2012-03-20 18:56:03 UTC

Created attachment 306039 [details]
emerge --info

Comment 2 Dmitry Derevyanko 2012-03-20 18:57:02 UTC

Created attachment 306041 [details]
ffmpeg's build.log

Comment 3 Dmitry Derevyanko 2012-03-20 19:09:39 UTC

Created attachment 306043 [details]
ffmpeg's build.log (now gunziped)

Comment 4 Dmitry Derevyanko 2012-03-20 19:18:23 UTC

ffmpeg-9999 doesn't compile too.

Comment 5 Jeroen Roovers (RETIRED) gentoo-dev

2012-03-20 21:13:48 UTC

Please re-emerge sys-devel/libtool and try again.

Comment 6 Dmitry Derevyanko 2012-03-21 00:36:13 UTC

Already tried also it hasn't helped.

Comment 7 Dmitry Derevyanko 2012-03-21 13:54:36 UTC

Compiles fine with:
USE="-frei0r" emerge -1 ffmpeg

Comment 8 Justus Ranvier 2012-03-24 19:07:32 UTC

I experienced the same problem on 2 our of 3 machines, including a successful compilation with USE="-frei0r".

In case it is relevent all three machines have nearly-identical configurations but the one that successfully compiled with USE="frei0r" is an opteron machine and the two machines which experienced failure were a core 2 quad and a core i7. All have -march=native in CFLAGS.

Comment 9 Alex 2012-03-30 13:10:19 UTC

I can confirm this: core i7, building failure with same error, and fix by disabling frei0r use-flag.

Comment 10 Alexis Ballier gentoo-dev

2012-03-30 20:01:01 UTC

please attach config.log ; frei0r depends on dlopen so this should just get added automatically, unless something has failed in the detection.

please reopen with that info

Comment 11 Alex 2012-04-04 10:14:21 UTC

Created attachment 307733 [details]
config.log

Attached congig.log

also, I noticed that it compiles fine with USE="frei0r -fftools_graph2dot"

Comment 12 Alexis Ballier gentoo-dev

2012-04-08 14:36:15 UTC

(In reply to comment #11)
> Created attachment 307733 [details]
> config.log
> 
> Attached congig.log
> 
> also, I noticed that it compiles fine with USE="frei0r -fftools_graph2dot"

well, yes, but libavfilter remain underlinked, disabling graph2dot just hides the problem :)

Comment 13 Alexis Ballier gentoo-dev

2012-04-08 14:37:11 UTC

backported a fix to link libavfilter with libdl in 0.10.2 when using frei0r