8.0.0beta2: gcc: unrecognized option `-pthreads'

Is this pthreads warning of any concern?

gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes
-Wmissing-declarations -pthread -pthreads -D_REENTRANT -D_THREAD_SAFE
-D_POSIX_PTHREAD_SEMANTICS -fpic -shared -Wl,-soname,libecpg.so.4 execute.o
typename.o descriptor.o data.o error.o prepare.o memory.o connect.o misc.o
path.o exec.o -L../../../../src/port -L../pgtypeslib -lpgtypes
-L../../../../src/interfaces/libpq -lpq -lcrypt -lm -lpthread
-Wl,-rpath,/opt/pgsql/installs/postgresql-8.0.0beta2/lib -o libecpg.so.4.2
gcc: unrecognized option `-pthreads'

Ed