comment remédier a cette erreur???

/usr/lib/libdb.so: undefined reference to `pthread_condattr_setpshared'
/usr/lib/libdb.so: undefined reference to `pthread_mutexattr_destroy'
/usr/lib/libdb.so: undefined reference to `pthread_mutexattr_setpshared'
/usr/lib/libdb.so: undefined reference to `pthread_mutexattr_init'
/usr/lib/libdb.so: undefined reference to `pthread_mutex_trylock'

MERCI!