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		<title>C&#43;&#43; on WorkToolSmith</title>
		<link>https://worktoolsmith.com/tag/c/</link>
		<description>Recent content in C&#43;&#43; on WorkToolSmith</description>
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				<title>UbuntuでBoostライブラリをコンパイル時のエラー</title>
				<link>https://worktoolsmith.com/ubuntu-boostlib-error/</link>
				<pubDate>Mon, 27 Feb 2012 15:35:53 +0900</pubDate>
				<guid>https://worktoolsmith.com/ubuntu-boostlib-error/</guid>
				<description>&lt;p&gt;Ubuntuでaptからboostライブラリを取得し、プラグラムで使用する場合に下記のようなエラーがでる場合がある。&lt;/p&gt;&#xD;&#xA;&lt;p&gt;下記はコマンドライン引数を分解するライブラリ「program_options」を使った場合&lt;/p&gt;&#xD;&#xA;&lt;pre class=&#34;wrap:true lang:sh decode:true &#34;&gt;mk.cpp:(.text+0x219): undefined reference to `boost::program_options::variables_map::variables_map()&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x21f): undefined reference to `boost::program_options::options_description::m_default_line_length&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x25d): undefined reference to `boost::program_options::options_description::options_description(std::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, unsigned int)&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x29f): undefined reference to `boost::program_options::options_description::add_options()&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x2bd): undefined reference to `boost::program_options::options_description_easy_init::operator()(char const*, char const*)&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x307): undefined reference to `boost::program_options::options_description_easy_init::operator()(char const*, char const*)&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x31f): undefined reference to `boost::program_options::options_description_easy_init::operator()(char const*, char const*)&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x387): undefined reference to `boost::program_options::store(boost::program_options::basic_parsed_options&amp;lt;char&amp;gt; const&amp;amp;, boost::program_options::variables_map&amp;amp;, bool)&#39;&amp;lt;br&amp;gt;mk.cpp:(.text+0x481): undefined reference to `boost::program_options::operator&amp;lt;&amp;lt;(std::basic_ostream&amp;lt;char, std::char_traits&amp;lt;char&amp;gt; &amp;gt;&amp;amp;, boost::program_options::options_description const&amp;amp;)&#39;&lt;/pre&gt;&#xD;&#xA;&lt;p&gt;</description>
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				<title>OpenCVでバージョン番号を調べる</title>
				<link>https://worktoolsmith.com/ubuntu-opencv-ver/</link>
				<pubDate>Sat, 25 Feb 2012 09:46:04 +0900</pubDate>
				<guid>https://worktoolsmith.com/ubuntu-opencv-ver/</guid>
				<description>&lt;p&gt;OpenCVのバージョン番号を簡単に調べる方法です。&lt;/p&gt;&#xD;&#xA;&lt;p&gt;OpenCVのソースの中に「cvver.h」があるのでそれを開けばOK。&lt;/p&gt;&#xD;&#xA;&lt;p&gt;Ubuntuのaptでインストールした場合は /usr/include/opencv/cvver.h になる。&lt;/p&gt;&#xD;&#xA;&lt;p&gt;</description>
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