Compiling lilypond 1.5.1 on Mac OS X

[Christian Hitz]

Hello I'm trying to compile lilypond 1.5.1 on Mac OS X 10.0.4. I get the 
following error:

make -C ../flower &&  true
make PACKAGE=LILYPOND package=lilypond -C include all && true
true
c++     -o out/midi2ly ./out/duration-convert.o ./out/duration-iter.o 
./out/duration.o ./out/lilypond-column.o ./out/lilypond-item.o 
./out/lilypond-score.o ./out/lilypond-staff.o ./out/lilypond-stream.o 
./out/lilypond-voice.o ./out/main.o ./out/midi-parser.o 
./out/midi-score-parser.o ./out/midi-track-parser.o 
./out/midi2ly-version.o ./out/plet.o ./out/version.o 
./out/../../flower/out/library.a   -L/usr/local/lib -lguile -lm
/usr/bin/ld: Undefined symbols:
_length__Ct10Interval_t1Zi
make[1]: *** [out/midi2ly] Fehler 1
make: *** [all] Fehler 2

Has someone an idea how to fix this, or what coud be the cause of it?

Any help appreciated
Christian