ACE編程，無法解析外部符號服務器端程序：#ifdef _DEBUG#pragma comment (lib,"aced.lib")#else#pragma comment (lib,"ace.lib")#endif#include"iostream"#include"ace/INET_Addr.h"#include"ace/SOCK_Connector.h"#include"ace/SOCK_Acceptor.h"#include"ace/SOCK_Stream.h"#include"ace/Mem_Map.h"#include"ace/Auto_Ptr.h"using namespace std;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){cout<<"set failed"<<endl;return 1;}if(acceptor.open(server_addr)==-1){cout<<"acceptor failed"<<endl;return 1;}for(;;){if(acceptor.accept(peer)==-1){cout<<"acceptor faile"<<endl;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;}客戶端編譯沒問題，服務器端編譯錯誤提示： 1>------ 已啟動生成: 項目: ace_server, 配置: Debug Win32 ------ 1>正在鏈接... 1>serve.obj : error LNK2019: 無法解析的外部符號 "int __cdecl ace_main_i(int,char * * const)" (?ace_main_i@@YAHHQAPAD@Z)，該符號在函數 "private: virtual int __thiscall ACE_Main::run_i(int,char * * const)" (?run_i@ACE_Main@@EAEHHQAPAD@Z) 中被引用 1>serve.obj : error LNK2019: 無法解析的外部符號 "char * __cdecl get_url_pathname(class ACE_SOCK_Stream *)" (?get_url_pathname@@YAPADPAVACE_SOCK_Stream@@@Z)，該符號在函數 "int __cdecl ace_main_i(void)" (?ace_main_i@@YAHXZ) 中被引用 1>F:\ace_server\Debug\ace_server.exe : fatal error LNK1120: 2 個無法解析的外部命令 1>生成日志保存在“file://f:\ace_server\ace_server\Debug\BuildLog.htm” 1>ace_server - 3 個錯誤，0 個警告 ========== 生成: 0 已成功, 1 已失敗, 0 最新, 0 已跳過 ==========