[gcc 3.3.3/x86] warning: type and size of dynamic symbol `__rw_atomic_add32' are not defined

Many of our programs are linking with the ominous looking warning below. This only happens on trunk, not with stdcxx-4.1.3.

gcc alg1.o -o alg1 -pthread -L$(BUILDDIR)/lib -Wl,-R$(BUILDDIR)/lib -lstd -lsupc++ -lm
/package/1/utils/binutils/binutils-2.15.90.0.1.1-32.10/bin/ld: warning: type and size of dynamic symbol `__rw_atomic_add32' are not defined
gcc -c -I$(TOPDIR)/include/ansi -pthread -I$(TOPDIR)/include -I$(BUILDDIR)/include -I$(TOPDIR)/examples/include -pedantic -nostdinc++ -O2 -W -Wall -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long -Wcast-align $(TOPDIR)/examples/tutorial/alg2.cpp
gcc alg2.o -o alg2 -pthread -L$(BUILDDIR)/lib -Wl,-R$(BUILDDIR)/lib -lstd -lsupc++ -lm