...1d7): undefined reference to `pthread_rwlock_unlock' flock.o: In function `flock_destroy': flock.c:(.text+0x205): undefined reference to `pthread_rwlock_destroy' collect2: ld returned 1 exit status make[1]: *** [xs-import] Error 1 make[1]: Leaving directory `/usr/local/xunsearch-full-1.0.1/xunsearch...