包括Boost文件系统头 [英] Including the Boost filesystem header

问题描述

我有一个大项目.

在N.cpp中，我需要使用boost::filesystem::exists(path)来检查路径是否有效.

In N.cpp I need to use boost::filesystem::exists(path) to check if the path is valid.

为此，我加入了<boost/filesystem.hpp>

我收到以下错误:

Error    2    error LNK2005: "public: enum boost::filesystem::file_type __cdecl boost::filesystem::file_status::type(void)const " (?type@file_status@filesystem@boost@@QEBA?AW4file_type@23@XZ) already defined in N.obj    D:\MProject\DA\boost_filesystem-vc100-mt-gd-1_53.lib(boost_filesystem-vc100-mt-gd-1_53.dll)    DA

Error    1    error LNK2005: "public: __cdecl boost::filesystem::path::~path(void)" (??1path@filesystem@boost@@QEAA@XZ) already defined in N.obj    D:\MProject\DAboost_filesystem-vc100-mt-gd-1_53.lib(boost_filesystem-vc100-mt-gd-1_53.dll)    DA

Error    3    error LNK1104: cannot open file 'libboost_filesystem-vc100-mt-gd-1_53.lib'    D:\MProject\DA\LINK    DA

如果不包含头文件，则会得到:

If I do not include the header file, I get:

Error    2    error C3861: 'exists': identifier not found    D:\MProject\DA\ThirdParty\N.cpp    108    1    DA
Error    1    error C2653: 'boost' : is not a class or namespace name    D:\MProject\DA\ThirdParty\N.cpp    108    1    DA

什么是使用boost::filesystem::exists以便可以编译整个内容的正确方法?

What is the right way to use boost::filesystem::exists so that the whole thing would compile?

#include <boost/filesystem.hpp>
.....
CHECK( boost::filesystem::exists(*i), std::string("file ").append(*i).append(" does not exist").c_str() );

.....

推荐答案

我通过添加到N.cpp来解决了这个问题:

I solved the problem by adding to N.cpp:

#ifndef BOOST_ALL_DYN_LINK
#   define BOOST_ALL_DYN_LINK
#endif 
#include <boost/filesystem.hpp>

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