Boost C++ Libraries: Ticket #3724: <boost/spirit/version.hpp> and <boost/spirit/include/version.hpp> use same include guard https://svn.boost.org/trac10/ticket/3724 <p> &lt;boost/spirit/version.hpp&gt; and &lt;boost/spirit/include/version.hpp&gt; use the same include guard (i.e. SPIRIT_VERSION_NOVEMBER_13_2008_0834AM). As a result, the content of &lt;boost/spirit/include/version.hpp&gt; ends up being ignored when #included via &lt;boost/spirit/version.hpp&gt; resulting in SPIRIT_VERSION not being defined! </p> en-us Boost C++ Libraries /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/3724 Trac 1.4.3 Hartmut Kaiser Sun, 06 Dec 2009 18:52:59 GMT status changed; resolution set https://svn.boost.org/trac10/ticket/3724#comment:1 https://svn.boost.org/trac10/ticket/3724#comment:1 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">fixed</span> </li> </ul> <p> (In <a class="changeset" href="https://svn.boost.org/trac10/changeset/58196" title="Spirit: fixed include guard conflict (fixes #3724)">[58196]</a>) Spirit: fixed include guard conflict (fixes <a class="closed ticket" href="https://svn.boost.org/trac10/ticket/3724" title="#3724: Bugs: &lt;boost/spirit/version.hpp&gt; and &lt;boost/spirit/include/version.hpp&gt; use ... (closed: fixed)">#3724</a>) </p> Ticket