Hello... I'm trying to port a threaded C++ project from Linux to MacOSX. The Makefile has these parameters: LIBS = -L./SocketLibrary/ -lpthread -lrt -lsock The only thing that's bombing out for me is the -lrt flag... Does anyone know what this is? My assumption is "real time library" and google doesn't seem to give anything but Linux information about it. Is there an equivalent in MacOSX? It _seems_ to run fine without it (in Linux and MacOSX), but I have no idea. Anyone seen this before?