I'm attempting to build audio/libsndfile on MacOS X 10.2.8 and the build
fails with undefined symbols as follows:

[...]
/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?

-- 
John D. Baker, KN5UKS                    NetBSD     Darwin/MacOS X
jdbaker(at)mylinuxisp(dot)com                 OpenBSD            FreeBSD
BSD -- It just sits there and _works_!