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| Original file line number | Diff line number | Diff line change |
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| <html> | ||
| <head> | ||
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> | ||
| <title>Module Support (Experimental)</title> | ||
| <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> | ||
| <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> | ||
| <link rel="home" href="../index.html" title="Boost.Regex 7.0.1"> | ||
| <link rel="up" href="../index.html" title="Boost.Regex 7.0.1"> | ||
| <link rel="prev" href="install.html" title="Building and Installing the Library"> | ||
| <link rel="next" href="intro.html" title="Introduction and Overview"> | ||
| <meta name="viewport" content="width=device-width, initial-scale=1"> | ||
| </head> | ||
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> | ||
| <table cellpadding="2" width="100%"><tr> | ||
| <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> | ||
| <td align="center"><a href="../../../../../index.html">Home</a></td> | ||
| <td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> | ||
| <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> | ||
| <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> | ||
| <td align="center"><a href="../../../../../more/index.htm">More</a></td> | ||
| </tr></table> | ||
| <hr> | ||
| <div class="spirit-nav"> | ||
| <a accesskey="p" href="install.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.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="intro.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> | ||
| </div> | ||
| <div class="section"> | ||
| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
| <a name="boost_regex.modules"></a><a class="link" href="modules.html" title="Module Support (Experimental)">Module Support (Experimental)</a> | ||
| </h2></div></div></div> | ||
| <p> | ||
| This library has experimental support for C++ modules (C++20 or later), currently | ||
| the support is experimental not least because at the time of writing (2025) | ||
| build tools have yet to catch up with module support. | ||
| </p> | ||
| <p> | ||
| In order to use this library as a module you simply add a: | ||
| </p> | ||
| <pre class="programlisting"><span class="identifier">import</span> <span class="identifier">boost</span><span class="special">.</span><span class="identifier">regex</span><span class="special">;</span> | ||
| </pre> | ||
| <p> | ||
| to your code. | ||
| </p> | ||
| <p> | ||
| Before that you must first build the module, which consists of these steps: | ||
| </p> | ||
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> | ||
| <li class="listitem"> | ||
| Depending on your compiler, you may need to build the standard library | ||
| module, and place the standard module somewhere that your compiler can | ||
| find it. | ||
| </li> | ||
| <li class="listitem"> | ||
| Build <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">regex</span><span class="special">/</span><span class="identifier">module</span><span class="special">/</span><span class="identifier">regex</span><span class="special">.</span><span class="identifier">cxx</span></code> into the boost.regex module, and | ||
| place the module definition file somewhere that your compiler can find | ||
| it. | ||
| </li> | ||
| <li class="listitem"> | ||
| Build all the source files in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">regex</span><span class="special">/</span><span class="identifier">module</span></code> | ||
| (including regex.cxx) into a library, and place the result somewhere your | ||
| linker can find it. | ||
| </li> | ||
| </ul></div> | ||
| <p> | ||
| Visual studio users can simplify all of the above into one step, by placing | ||
| everything in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">regex</span><span class="special">/</span><span class="identifier">module</span></code> | ||
| into a static library project, and then adding the <code class="computeroutput"><span class="special">/</span><span class="identifier">interface</span></code> command line option to the regex.cxx | ||
| source file. | ||
| </p> | ||
| <p> | ||
| Known limitations: | ||
| </p> | ||
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> | ||
| <li class="listitem"> | ||
| As of the start of 2025, only very recent versions of clang and msvc are | ||
| supported. GCC is definitely not supported. | ||
| </li> | ||
| <li class="listitem"> | ||
| The regex library must always be consumed via <code class="computeroutput"><span class="identifier">import</span> | ||
| <span class="identifier">boost</span><span class="special">.</span><span class="identifier">regex</span><span class="special">;</span></code> | ||
| and you can never mix this with <code class="computeroutput"><span class="preprocessor">#includes</span> | ||
| <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>. | ||
| </li> | ||
| <li class="listitem"> | ||
| Ideally the standard library should always be used via <code class="computeroutput"><span class="identifier">import</span> | ||
| <span class="identifier">std</span></code> and not via #includes: more | ||
| recent compilers are mostly making this work, but are still very fragile. | ||
| </li> | ||
| <li class="listitem"> | ||
| The regex version imported, is always the "standalone" version | ||
| which includes no other Boost headers. | ||
| </li> | ||
| </ul></div> | ||
| <p> | ||
| Finally... there are some build and test scripts in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">regex</span><span class="special">/</span><span class="identifier">test</span><span class="special">/</span><span class="identifier">module</span></code> | ||
| for msvc and clang. | ||
| </p> | ||
| </div> | ||
| <div class="copyright-footer">Copyright © 1998-2013 John Maddock<p> | ||
| Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 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>) | ||
| </p> | ||
| </div> | ||
| <hr> | ||
| <div class="spirit-nav"> | ||
| <a accesskey="p" href="install.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.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="intro.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> | ||
| </div> | ||
| </body> | ||
| </html> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| [/ | ||
| Copyright 2024 John Maddock. | ||
| Distributed under the Boost Software License, Version 1.0. | ||
| (See accompanying file LICENSE_1_0.txt or copy at | ||
| http://www.boost.org/LICENSE_1_0.txt). | ||
| ] | ||
|
|
||
| [section:modules Module Support (Experimental)] | ||
|
|
||
| This library has experimental support for C++ modules (C++20 or later), currently the support is experimental | ||
| not least because at the time of writing (2025) build tools have yet to catch up with module support. | ||
|
|
||
| In order to use this library as a module you simply add a: | ||
|
|
||
| ``` | ||
| import boost.regex; | ||
| ``` | ||
|
|
||
| to your code. | ||
|
|
||
| Before that you must first build the module, which consists of these steps: | ||
|
|
||
| * Depending on your compiler, you may need to build the standard library module, and place the standard module somewhere that your compiler can find it. | ||
| * Build `libs/regex/module/regex.cxx` into the boost.regex module, and place the module definition file somewhere that your compiler can find it. | ||
| * Build all the source files in `libs/regex/module` (including regex.cxx) into a library, and place the result somewhere your linker can find it. | ||
|
|
||
| Visual studio users can simplify all of the above into one step, by placing everything in `libs/regex/module` into a static library project, and then adding the `/interface` | ||
| command line option to the regex.cxx source file. | ||
|
|
||
| Known limitations: | ||
|
|
||
| * As of the start of 2025, only very recent versions of clang and msvc are supported. GCC is definitely not supported. | ||
| * The regex library must always be consumed via `import boost.regex;` and you can never mix this with `#includes <boost/regex.hpp>`. | ||
| * Ideally the standard library should always be used via `import std` and not via #includes: more recent compilers are mostly making this work, but are still very fragile. | ||
| * The regex version imported, is always the "standalone" version which includes no other Boost headers. | ||
|
|
||
| Finally... there are some build and test scripts in `libs/regex/test/module` for msvc and clang. | ||
|
|
||
| [endsect] | ||
|
|
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