> /bin/sh ../libtool --mode=link gcc -pipe  -O2 -W -Wall  
> -Wstrict-prototypes -Wmissing-prototypes  -Wcast-align -Wcast-qual  
> -Wnested-externs  -Wbad-function-cast -Wwrite-strings -pipe  
> -fpascal-strings -I/Developer/Headers/FlatCarbon   -L/usr/pkg/lib -o  
> sndfile-play  sndfile-play.o ../src/libsndfile.la -framework CoreAudio  
>   -lm
> gcc -pipe -O2 -W -Wall -Wstrict-prototypes -Wmissing-prototypes  
> -Wcast-align -Wcast-qual -Wnested-externs -Wbad-function-cast  
> -Wwrite-strings -pipe -fpascal-strings -I/Developer/Headers/FlatCarbon  
> -o .libs/sndfile-play sndfile-play.o   
> -L/Volumes/NetBSD/tmp/pkgsrc/audio/libsndfile/work/.buildlink/lib  
> ../src/.libs/libsndfile.dylib -lm
> ld: Undefined symbols:
> _AudioDeviceAddIOProc
> _AudioDeviceGetProperty
> _AudioDeviceRemoveIOProc
> _AudioDeviceSetProperty
> _AudioDeviceStart
> _AudioDeviceStop
> _AudioHardwareGetProperty
> *** Error code 1
>
> Stop.
> bmake: stopped in  
> /Volumes/NetBSD/tmp/pkgsrc/audio/libsndfile/work/libsndfile-1.0.11/ 
> examples
> [...]
>
> The interesting thing to notice is the '-framework CoreAudio' in the
> libtool command line, but it is missing from the resultant gcc command
> line.  The missing symbols are in
>
>      /System/Library/Frameworks/CoreAudio.framework/Versions/\
>       Current/CoreAudio
>
> Any hints for how to get around this?


Greetings,

This is a bug in libtool.  I've send a bug report to its developers.
In the meantime, any work-around is welcome. :]

Kind regards,
Adam