[PD] creb installation problems

[roc]

yo
i got creb-0.9.0 and tried to build it
i'm on a g4 powerbook os 10.2.3 and pd 0.36
after i finish, pd can't load the lib
here's what i get when i "make"

make -C system
make[1]: Nothing to be done for `all'.
make -C modules
cc -DPD -DCREB_VERSION=\"0.9.0\" -O2 -funroll-loops 
-fomit-frame-pointer -Wall -W -Wstrict-prototypes -Werror -Wno-unused 
-Wno-parentheses -Wno-switch  -INONE/pd/src -I../include 
-I../include/dspi -o resofilt.o -c resofilt.c
cc1: warnings being treated as errors
resofilt.c: In function `resofilt_perform_threepole':
resofilt.c:225: warning: implicit declaration of function `sqrtf'
make[1]: *** [resofilt.o] Error 1
make: *** [current] Error 2
_________

what am i missing?
best
r