1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Spirit Classic</title> 5<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../index.html" title="Spirit 2.5.8"> 8<link rel="up" href="../what_s_new.html" title="What's New"> 9<link rel="prev" href="spirit_2_1.html" title="Spirit V2.1"> 10<link rel="next" href="../introduction.html" title="Introduction"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="spirit_2_1.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../what_s_new.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../introduction.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="spirit.what_s_new.spirit_1_x"></a><a class="link" href="spirit_1_x.html" title="Spirit Classic">Spirit Classic</a> 28</h3></div></div></div> 29<p> 30 The Spirit V1.8.x code base has been integrated with Spirit V2. It is now 31 called <a href="../../../../../../libs/spirit/classic/index.html" target="_top"><span class="emphasis"><em>Spirit.Classic</em></span></a>. 32 Since the directory structure has changed (the Spirit Classic headers are 33 now moved to the $BOOST_ROOT/boost/spirit/home/classic directory), we created forwarding headers allowing existing 34 applications to compile without any change. However, these forwarding headers 35 are deprecated, which will result in corresponding warnings generated for 36 each of the headers starting with Boost V1.38. The forwarding headers are 37 expected to be removed in the future. 38 </p> 39<p> 40 The recommended way of using Spirit Classic now is to include header files 41 from the directory $BOOST_ROOT/boost/spirit/include. All Spirit Classic headers in this directory have 'classic_' 42 prefixed to their name. For example the include 43 </p> 44<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">core</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 45</pre> 46<p> 47 now should be written as: 48 </p> 49<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">classic_core</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 50</pre> 51<p> 52 To avoid namespace conflicts with the new Spirit V2 library we moved Spirit 53 Classic into the namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">classic</span></code>. 54 All references to the former namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span></code> 55 need to be adjusted as soon as the header names are corrected as described 56 above. As an alternative you can define the preprocessor constant <code class="computeroutput"><span class="identifier">BOOST_SPIRIT_USE_OLD_NAMESPACE</span></code>, which will 57 force the Spirit Classic code to be in the namespace <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span></code> 58 as before. This is not recommended, though, as it may result in naming clashes. 59 </p> 60<p> 61 The change of the namespace will be automatically deactivated whenever the 62 deprecated include files are being used. This ensures full backwards compatibility 63 for existing applications. 64 </p> 65</div> 66<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 67<td align="left"></td> 68<td align="right"><div class="copyright-footer">Copyright © 2001-2011 Joel de Guzman, Hartmut Kaiser<p> 69 Distributed under the Boost Software License, Version 1.0. (See accompanying 70 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 71 </p> 72</div></td> 73</tr></table> 74<hr> 75<div class="spirit-nav"> 76<a accesskey="p" href="spirit_2_1.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../what_s_new.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../introduction.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 77</div> 78</body> 79</html> 80
