【发布时间】:2014-01-10 21:09:53
【问题描述】:
我正在尝试使用 c++11 std::thread 和用于网络的 SFML 库运行此代码,但是我无法构建它。我很确定这与我如何设置编译器有关,但我不知道......我怎样才能让它工作?我一直在搞砸试图让它工作,通过教程等几个小时,所以我转向 Stack Overflow 寻求答案。我在 windows7 64 位机器上使用 code::blocks IDE 和 x32-4.8.1-posix-dwarf-rev5 编译器。
#include <iostream>
#include <thread>
#include <string>
#include <SFML/System.hpp>
#include <SFML/Network.hpp>
using namespace std;
void doNetwork() {
cout << "Starting..." << endl;
sf::TcpListener listener;
listener.listen(88);
// Wait for a connection
sf::TcpSocket socket;
listener.accept(socket);
cout << "New client connected: " << socket.getRemoteAddress() << endl;
// Receive a message from the client
char buffer[1024];
size_t received = 0;
socket.receive(buffer, sizeof(buffer), received);
cout << "The client said: " << buffer << endl;
// Send an answer
string message = "Welcome, client";
socket.send(message.c_str(), message.size() + 1);
}
int main()
{
thread task(doNetwork);
task.join();
return 0;
}
这是构建调试日志所说的:
-------------- Build: Debug in bang ---------------
Compiling: main.cpp
Linking console executable: bin\Debug\bang.exe
obj\Debug\main.o: In function `Z9doNetworkv':
C:/Users/user/CppProjects/bang/main.cpp:12: undefined reference to `sf::TcpListener::TcpListener()'
C:/Users/user/CppProjects/bang/main.cpp:13: undefined reference to `sf::TcpListener::listen(unsigned short)'
C:/Users/user/CppProjects/bang/main.cpp:16: undefined reference to `sf::TcpSocket::TcpSocket()'
C:/Users/user/CppProjects/bang/main.cpp:17: undefined reference to `sf::TcpListener::accept(sf::TcpSocket&)'
C:/Users/user/CppProjects/bang/main.cpp:18: undefined reference to `sf::TcpSocket::getRemoteAddress() const'
C:/Users/user/CppProjects/bang/main.cpp:18: undefined reference to `sf::operator<<(std::ostream&, sf::IpAddress const&)'
C:/Users/user/CppProjects/bang/main.cpp:23: undefined reference to `sf::TcpSocket::receive(void*, unsigned int, unsigned int&)'
C:/Users/user/CppProjects/bang/main.cpp:28: undefined reference to `sf::TcpSocket::send(void const*, unsigned int)'
obj\Debug\main.o: In function `ZN2sf11TcpListenerD1Ev':
C:/Users/user/CppProjects/SFML-2.1/include/SFML/Network/TcpListener.hpp:43: undefined reference to `sf::Socket::~Socket()'
obj\Debug\main.o: In function `ZN2sf9TcpSocketD1Ev':
C:/Users/user/CppProjects/SFML-2.1/include/SFML/Network/TcpSocket.hpp:46: undefined reference to `sf::Socket::~Socket()'
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 0 seconds)
10 errors, 0 warnings
我在编译器中使用的设置:
编译器标志:
-std=C++0x
其他选项:
-std=gnu++0x -U__STRICT_ANSI__
定义:
SFML_STATIC
链接器设置:
sfml-system-s-d
sfml-network-s-d
搜索目录 - 编译器:
C:\Users\user\CppProjects\SFML-2.1\include
C:\Users\user\CppProjects\bang\include
搜索目录 - 链接器:
C:\Users\user\CppProjects\SFML-2.1\lib\
工具链可执行文件:
-编译器安装目录:
C:\Program Files (x86)\mingw-builds\x32-4.8.1-posix-dwarf-rev5\mingw32
-C编译器:
i686-w64-mingw32-gcc-4.8.1.exe
-C++ 编译器:
i686-w64-mingw32-c++.exe
-动态库的链接器:
i686-w64-mingw32-c++.exe
-静态库的链接器:
ar.exe
-调试器:
gdb.exe
-资源编译器:
windres.exe
-制作程序:
mingw32-make.exe
【问题讨论】:
-
您没有链接包含这些符号的 sfml 库。请参阅 sfml 文档。
-
我的全局链接器设置中有这个:C:\Users\user\CppProjects\SFML-2.1\lib\sfml-network-sd.lib C:\Users\user\CppProjects\SFML- 2.1\lib\sfml-system-sd.lib 和我的搜索目录中的这个链接器:C:\Users\user\CppProjects\SFML-2.1\lib\ 这些是否正确?
-
@user1551924,查看一些 CodeBlocks 文档会告诉您,您需要
sfml-network-s-d和sfml-system-s-d。 -
我已将链接器设置更改为 sfml-network-s-d 和 sfml-system-s-d,但在构建时遇到完全相同的错误
标签: c++ multithreading c++11 codeblocks sfml