Boost 示例无法在 VS2010 上编译？

Question

我试图从网站上获得一个提升示例来工作：

http://www.boost.org/doc/libs/1_47_0/doc/html/boost_asio/example/http/client/async_client.cpp

但每当我构建并尝试执行时，我不断从 VS2010 获得以下信息：

1>------ Build started: Project: highfreqdemo, Configuration: Debug Win32 ------
1>Build started 24/10/2011 18:41:08.
1>InitializeBuildStatus:
1>  Touching "Debug\highfreqdemo.unsuccessfulbuild".
1>ClCompile:
1>  All outputs are up-to-date.
1>  highfreqdemo.cpp
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(4): warning C4627: '#include <iostream>': skipped when looking for precompiled header use
1>          Add directive to 'StdAfx.h' or rebuild precompiled header
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(5): warning C4627: '#include <istream>': skipped when looking for precompiled header use
1>          Add directive to 'StdAfx.h' or rebuild precompiled header
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(6): warning C4627: '#include <ostream>': skipped when looking for precompiled header use
1>          Add directive to 'StdAfx.h' or rebuild precompiled header
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(7): warning C4627: '#include <string>': skipped when looking for precompiled header use
1>          Add directive to 'StdAfx.h' or rebuild precompiled header
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(8): warning C4627: '#include <boost/asio.hpp>': skipped when looking for precompiled header use
1>          Add directive to 'StdAfx.h' or rebuild precompiled header
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(9): warning C4627: '#include <boost/bind.hpp>': skipped when looking for precompiled header use
1>          Add directive to 'StdAfx.h' or rebuild precompiled header
1>c:\users\x\documents\visual studio 2010\projects\highfreqdemo\highfreqdemo\highfreqdemo.cpp(199): fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "StdAfx.h"' to your source?
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.76
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

我有点不确定到底该怎么做才能解决这个问题？

Answer 1

Add directive to 'StdAfx.h' or rebuild precompiled header

您的项目配置了预编译头文件支持，但您的源文件中没有包含预编译头文件。

预编译的头文件（在本例中为 StdAfx.h）需要包含在配置为使用预编译头的每个源文件的最顶部。

要么包含此文件，要么禁用预编译头文件（在项目属性中，在 C/C++ -> Precompiled Headers 下，将 Precompiled Header 属性设置为“Not Using Precompiled Headers”；这也可以为单个源文件设置） .

Answer 2

警告和错误非常清楚；在包含标准头和 Boost 头之前，您需要将 #include "StdAfx.h" 添加到您的 highfreqdemo.cpp 文件中。