Missing libavcodec library in ffmpeg port

[Boey Maun Suang]

Hi David,

>> I just downloaded ffmpeg and it appears to be missing the
>> libavcodec.dylib.51.9.0 library:

I've finally got around to looking at it, and the answer is quite  
simple: the ffmpeg port isn't configured to build shared libraries at  
the moment -- static libraries only is the default setting for the  
ffmpeg source.  Unfortunately, just adding "--enable-shared" isn't  
working, as I'm then getting build failures; I'll email the  
maintainer once I get something working and I'll keep you posted.

>> A friend tells me I should be seeing this:
>>
>> /opt/local/lib/libavcodec.dylib -> libavcodec.dylib.51.9.0
>> /opt/local/lib/libavcodec.dylib.51.9.0

FYI, that's not quite the naming convention on Mac OS X.  On Linux at  
least, shared libraries (a.k.a. dynamic libraries) have the extension  
".so" and their version numbers come after that if they are  
explicitly given in the filename, e.g.:

libavcodec.so
libavcodec.so.51.9.0

Your friend is half-right with respect to Mac OS X: the shared  
libraries have the extension ".dylib", but the version number comes  
before that extension, e.g.:

libavcodec.dylib
libavcodec.51.9.0.dylib

But that's just by-the-by :-)

Kind regards,


Maun Suang

-- 
Boey Maun Suang (Boey is my surname)
Email: boeyms at macports.org