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- <title>mod_so - Apache HTTP Server</title>
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- <p class="apache">Apache HTTP Server Version 2.0</p>
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- <div id="page-content">
- <div id="preamble"><h1>Apache Module mod_so</h1>
- <div class="toplang">
- <p><span>Available Languages: </span><a href="../en/mod/mod_so.html" title="English"> en </a> |
- <a href="../ja/mod/mod_so.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p>
- </div>
- <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Loading of executable code and
- modules into the server at start-up or restart time</td></tr>
- <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
- <tr><th><a href="module-dict.html#ModuleIdentifier">ModuleáIdentifier:</a></th><td>so_module</td></tr>
- <tr><th><a href="module-dict.html#SourceFile">SourceáFile:</a></th><td>mod_so.c</td></tr>
- <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>This is a Base module (always included) on
- Windows</td></tr></table>
- <h3>Summary</h3>
-
-
- <p>On selected operating systems this module can be used to
- load modules into Apache at runtime via the <a href="../dso.html">Dynamic Shared Object</a> (DSO) mechanism,
- rather than requiring a recompilation.</p>
-
- <p>On Unix, the loaded code typically comes from shared object
- files (usually with <code>.so</code> extension), on Windows
- this may either the <code>.so</code> or <code>.dll</code>
- extension.</p>
-
- <div class="warning"><h3>Warning</h3>
- <p>Apache 1.3 modules cannot be directly used
- with Apache 2.0 - the module must be modified to dynamically
- load or compile into Apache 2.0.</p>
- </div>
- </div>
- <div id="quickview"><h3 class="directives">Directives</h3>
- <ul id="toc">
- <li><img alt="" src="../images/down.gif" /> <a href="#loadfile">LoadFile</a></li>
- <li><img alt="" src="../images/down.gif" /> <a href="#loadmodule">LoadModule</a></li>
- </ul>
- <h3>Topics</h3>
- <ul id="topics">
- <li><img alt="" src="../images/down.gif" /> <a href="#windows">Creating Loadable Modules for Windows</a></li>
- </ul></div>
- <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
- <div class="section">
- <h2><a name="windows" id="windows">Creating Loadable Modules for Windows</a></h2>
-
- <div class="note"><h3>Note</h3>
- <p>The module name format changed for Windows
- with Apache 1.3.15 and 2.0 - the modules are now named as
- mod_foo.so</p>
-
- <p>While mod_so still loads modules with
- ApacheModuleFoo.dll names, the new naming convention is
- preferred; if you are converting your loadable module for 2.0,
- please fix the name to this 2.0 convention.</p></div>
-
- <p>The Apache module API is unchanged between the Unix and
- Windows versions. Many modules will run on Windows with no or
- little change from Unix, although others rely on aspects of the
- Unix architecture which are not present in Windows, and will
- not work.</p>
-
- <p>When a module does work, it can be added to the server in
- one of two ways. As with Unix, it can be compiled into the
- server. Because Apache for Windows does not have the
- <code>Configure</code> program of Apache for Unix, the module's
- source file must be added to the ApacheCore project file, and
- its symbols must be added to the
- <code>os\win32\modules.c</code> file.</p>
-
- <p>The second way is to compile the module as a DLL, a shared
- library that can be loaded into the server at runtime, using
- the <code><code class="directive">LoadModule</code></code>
- directive. These module DLLs can be distributed and run on any
- Apache for Windows installation, without recompilation of the
- server.</p>
-
- <p>To create a module DLL, a small change is necessary to the
- module's source file: The module record must be exported from
- the DLL (which will be created later; see below). To do this,
- add the <code>AP_MODULE_DECLARE_DATA</code> (defined in the
- Apache header files) to your module's module record definition.
- For example, if your module has:</p>
-
- <div class="example"><p><code>
- module foo_module;
- </code></p></div>
-
- <p>Replace the above with:</p>
- <div class="example"><p><code>
- module AP_MODULE_DECLARE_DATA foo_module;
- </code></p></div>
-
- <p>Note that this will only be activated on Windows, so the
- module can continue to be used, unchanged, with Unix if needed.
- Also, if you are familiar with <code>.DEF</code> files, you can
- export the module record with that method instead.</p>
-
- <p>Now, create a DLL containing your module. You will need to
- link this against the libhttpd.lib export library that is
- created when the libhttpd.dll shared library is compiled. You
- may also have to change the compiler settings to ensure that
- the Apache header files are correctly located. You can find
- this library in your server root's modules directory. It is
- best to grab an existing module .dsp file from the tree to
- assure the build environment is configured correctly, or
- alternately compare the compiler and link options to your
- .dsp.</p>
-
- <p>This should create a DLL version of your module. Now simply
- place it in the <code>modules</code> directory of your server
- root, and use the <code class="directive">LoadModule</code>
- directive to load it.</p>
-
- </div>
- <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
- <div class="directive-section"><h2><a name="LoadFile" id="LoadFile">LoadFile</a> <a name="loadfile" id="loadfile">Directive</a></h2>
- <table class="directive">
- <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Link in the named object file or library</td></tr>
- <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LoadFile <em>filename</em> [<em>filename</em>] ...</code></td></tr>
- <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
- <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
- <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_so</td></tr>
- </table>
-
- <p>The LoadFile directive links in the named object files or
- libraries when the server is started or restarted; this is used
- to load additional code which may be required for some module
- to work. <em>Filename</em> is either an absolute path or
- relative to <a href="core.html#serverroot">ServerRoot</a>.</p>
-
- <p>For example:</p>
-
- <div class="example"><p><code>LoadFile libexec/libxmlparse.so</code></p></div>
-
-
- </div>
- <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
- <div class="directive-section"><h2><a name="LoadModule" id="LoadModule">LoadModule</a> <a name="loadmodule" id="loadmodule">Directive</a></h2>
- <table class="directive">
- <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Links in the object file or library, and adds to the list
- of active modules</td></tr>
- <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LoadModule <em>module filename</em></code></td></tr>
- <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
- <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
- <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_so</td></tr>
- </table>
- <p>The LoadModule directive links in the object file or library
- <em>filename</em> and adds the module structure named
- <em>module</em> to the list of active modules. <em>Module</em>
- is the name of the external variable of type
- <code>module</code> in the file, and is listed as the <a href="module-dict.html#ModuleIdentifier">Module Identifier</a>
- in the module documentation. Example:</p>
-
- <div class="example"><p><code>
- LoadModule status_module modules/mod_status.so
- </code></p></div>
-
- <p>loads the named module from the modules subdirectory of the
- ServerRoot.</p>
-
- </div>
- </div>
- <div class="bottomlang">
- <p><span>Available Languages: </span><a href="../en/mod/mod_so.html" title="English"> en </a> |
- <a href="../ja/mod/mod_so.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p>
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