[uClibc] LD_PRELOAD and "can't resolve symbol 'dlsym'"

[??]

dear all,

when using feature LD_PRELOAD of uclibc for "esound",
uclibc complain about "can't resolve symbol 'dlsym'"
i'm using uclibc sanpshot version 
how to fix this?
thanks and best regards,

--following message log --

# export LD_PRELOAD="libesd.so.0 libesddsp.so"
# ls
open .
exec /bin/ls
open /lib/libesd.so.0
open /lib/libesddsp.so
open /lib/libc.so.0
open /lib/libaudiofile.so.0
open /lib/libm.so.0

ls: can't resolve symbol 'dlsym'
#