Question

xcode 4.2
os x 10.7

当我将我的包含设置为：

#include <iostream>
#include <boost/thread.hpp>

我从位于/opt/local/include/boost/tr1/tr1

的文件中收到以下错误

Lexical or Preprocessor Issue
'boost/tr1/detail/config_all.hpp' file not found

/opt/local/include/boost/tr1/tr1/iostream文件的内容：

//  (C) Copyright John Maddock 2005.
//  Use, modification and distribution are subject to the
//  Boost Software License, Version 1.0. (See accompanying file
//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
//  This file exists to prevent std lib headers from accidentally
//  including a TR1 extention header; we must suppress this otherwise
//  we can end up with cyclic dependencies with some std lib implementations.
//
#ifndef BOOST_TR1_iostream_INCLUDED
#  define BOOST_TR1_iostream_INCLUDED
#  ifndef BOOST_TR1_NO_RECURSION
#     define BOOST_TR1_NO_RECURSION
#     define BOOST_TR1_NO_iostream_RECURSION
#  endif
#  include <boost/tr1/detail/config_all.hpp>
#  if defined(BOOST_HAS_INCLUDE_NEXT) && !defined(BOOST_TR1_DISABLE_INCLUDE_NEXT)
#     include_next <iostream>
#  else
#     include BOOST_TR1_STD_HEADER(iostream)
#  endif
#  ifdef BOOST_TR1_NO_iostream_RECURSION
#     undef BOOST_TR1_NO_iostream_RECURSION
#     undef BOOST_TR1_NO_RECURSION
#  endif
#endif

我应该使用位于/Developer/SDKs/MacOSX10.7.sdk/usr/include/c++/4.2.1/

的iostream标头

你必须原谅我，因为我对c ++很陌生，对xcode来说更新。预先感谢您的任何帮助。

Answer 1

绝对关闭递归搜索。如果没有指定完整的提升路径，您永远不能包含boost标头。很多Boost都是最终会成为标准的功能的训练基础，因此有很多Boost标题与标准标题共享同一个名称。还有一堆与其他boost标题共享同一名称的boost标头。这将导致你的悲伤无止境。

如何强制xcode使用正确的iostream头c ++

1 个答案: