链接到 gcc 中的增强正则表达式 [英] linking to boost regex in gcc

问题描述

我正在尝试编译我在 linux 上使用正则表达式的程序.我在库/正则表达式/构建通过键入制作-fgcc.mak它创建了一个目录 gcc，其中包含以下四个文件

i am trying to compile my program which uses regex on linux. I built the boost library in the libs/regex/build by typing make -fgcc.mak which created a directory gcc which contains the following four files

boost_regex-gcc-1_35
boost_regex-gcc-d-1_35
libboost_regex-gcc-1_35.a
libboost_regex-gcc-d-1_35.a

现在我想使用我的程序中的正则表达式，它位于某个任意目录中.我#included boost/regex.hpp

Now I want to use regex from my program which is in some arbitrary directory. I #included boost/regex.hpp

我收到错误消息，指出找不到 regex.hpp.然后我在 g++ 编译器中给出了 -I 选项.我没有得到那个错误.但我收到以下错误

I got the error which stated that regex.hpp is not found. Then I gave the -I option in the g++ compiler. I didn't get that error. But I get the following error

undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)'

我搜索了一下，发现我需要以某种方式将上述 4 个库之一链接到我的程序.我该怎么做.我应该链接哪一个，为什么?

I googled and found that I need to somehow link one of the above 4 libraries to my program. How can I do it. Which one should I link and why?

推荐答案

在链接步骤中将 libboost_regex-gcc-1_35.a 添加到目标文件列表或添加 -static-lboost_regex-gcc-1_35 相同.还要确保在编译步骤中有一个 -I 开关指向你的 boost 包含目录.如果库位于典型搜索路径之外(*nix 上的 /usr/lib)，请使用 -Wl,-L/path/to/boost/libs 将该目录添加到链接命令中 用于 g++ 或只是 -L/path/to/boost/libs 在 ld 上.

Either add libboost_regex-gcc-1_35.a to your list of object files in your link step or add -static -lboost_regex-gcc-1_35 to the same. Also be sure that you have an -I switch pointing to your boost includes directory in your compile step. If the libraries are outside the typical search path (/usr/lib on *nix), add that directory to your link command with -Wl,-L/path/to/boost/libs for g++ or simply -L/path/to/boost/libs on ld.

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