[Ffmpeg-devel] BUG: x264 and pthreads

[Joshua Boyd]

FFmpeg requires pthreads when using x264.  --enable-x264 alone fails,
but --enable-x264 and --enable-pthreads works.

The first way, ./configure says:
ERROR: x264 not found
and config.err contains:
gcc -c -o /tmp/ffmpeg-conf-1528-30906-27017.o
/tmp/ffmpeg-conf-6644-30906-19992.
c
gcc -Wl,--warn-common -o /tmp/ffmpeg-conf-10696-30906-32630
/tmp/ffmpeg-conf-152
8-30906-27017.o -lm -lz -ldts -lgsm -lvorbis -lvorbisenc -logg -logg
-lx264
/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libx264.a(encoder.o):
In funct
ion `x264_encoder_encode': undefined reference to `pthread_create'
/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libx264.a(encoder.o):
In funct
ion `x264_encoder_encode': undefined reference to `pthread_join'
collect2: ld returned 1 exit status
ERROR: x264 not found

I found this on ubuntu 6.06 (which uses a Febuary cvs version of x264)
and a fresh checkout from svn of ffmpeg.  This is different from
Monday's issue with x264.  Yesterday, someone on ffmpeg-users complained
of the same issue (he didn't say what version of x264 or linux
distribution he was using).

It seems to me that the ./configure script just needs to know of the
dependence like the way is says that libogg must be included to use
libvorbis. 

I've never dug into the configure script, so I'm just posting a bug
report for now.  Maybe I will come up with a patch as well.

-- 
Joshua D. Boyd
jdboyd at jdboyd.net
http://www.jdboyd.net/
http://www.joshuaboyd.org/