ACE编译错误问题！显然这里我有些知识不知道，请知道的帮个忙，3X

[beeloo]

安装好了ACE之后，编译c++ Network Programing里面的例程，结果编译器提示有以下错误：
Borland C++ 5.6 for Win32 Copyright (c) 1993, 2002 Borland
firstace.cpp:
Fatal F1003 D:\ACE\include\ace/config-win32-common.h 346: Error directive: You must link against multi-threaded libraries when using ACE (check your project settings)
*** 1 errors in Compile ***
附程序如下：
#include<ace/Auto_ptr.h>
#include<ace/INET_Addr.h>
#include<ace/SOCK_Acceptor.h>
#include<ace/SOCK_Stream.h>
#include<ace/Mem_Map.h>
extern char *get_url_pathname(ACE_SOCK_STREAM*);
int main()
{
ACE_INET_Addr server_addr;
ACE_SOCK_Acceptor acceptor;
ACE_SOCK_Stream peer;
if(server_addr.set(80) == -1) return 1;
for(;;)
{
if(acceptor.accept(peer) == -1) return 1;
peer.disable(ACE_NONBLOCK);
ACE_Auto_Array_Ptr<char> pathname(get_url_pathname(&peer));
ACE_Mem_Map mapped_file(pathname.get());
if(peer.send_n(mapped_file.addr(),mapped_file.size()) == -1) return 1;
peer.close();
}
return acceptor.close() == -1 ? 1:0;
}