40 lines
1.1 KiB
ReStructuredText
40 lines
1.1 KiB
ReStructuredText
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.. Copyright David Abrahams 2006. Distributed under the Boost
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.. Software License, Version 1.0. (See accompanying
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.. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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Link Your Program to a Boost Library
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====================================
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To demonstrate linking with a Boost binary library, we'll use the
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following simple program that extracts the subject lines from
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emails. It uses the Boost.Regex_ library, which has a
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separately-compiled binary component. ::
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#include <boost/regex.hpp>
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#include <iostream>
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#include <string>
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int main()
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{
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std::string line;
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boost::regex pat( "^Subject: (Re: |Aw: )*(.*)" );
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while (std::cin)
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{
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std::getline(std::cin, line);
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boost::smatch matches;
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if (boost::regex_match(line, matches, pat))
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std::cout << matches[2] << std::endl;
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}
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}
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There are two main challenges associated with linking:
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1. Tool configuration, e.g. choosing command-line options or IDE
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build settings.
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2. Identifying the library binary, among all the build variants,
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whose compile configuration is compatible with the rest of your
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project.
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