I had the same problem when I tried to do an upgrade of ffmpeg recently.  I got in touch with the maintained who suggested first uninstall or deactivating the old port.
Sure enough, just doing deactivating then doing an install of the new port worked fine.  Some piece of the new build seems to be finding the old piece around and causing a problem.  

--Adam



On Jan 18, 2008, at 12:43 PM, paul beard wrote:

I just opened this ticket against ffmpeg, as I didn't find any other tickets that matched my issue. 

ld: Undefined symbols:
_av_crc_get_table
/usr/bin/libtool: internal link edit command failed
make[1]: *** [libavcodec.51.dylib] Error 1
make: *** [lib] Error 2

< http://trac.macosforge.org/projects/macports/ticket/13984>


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Paul Beard / www.paulbeard.org/
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