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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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+<title>configure - Configure the source tree - Apache HTTP Server Version 2.4</title>
+<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
+<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
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+</script>
+
+<link href="../images/favicon.ico" rel="shortcut icon" /></head>
+<body id="manual-page"><div id="page-header">
+<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
+<p class="apache">Apache HTTP Server Version 2.4</p>
+<img alt="" src="../images/feather.png" /></div>
+<div class="up"><a href="./"><img title="&lt;-" alt="&lt;-" src="../images/left.gif" /></a></div>
+<div id="path">
+<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a> &gt; <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>configure - Configure the source tree</h1>
+<div class="toplang">
+<p><span>Available Languages: </span><a href="../en/programs/configure.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../fr/programs/configure.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
+<a href="../ko/programs/configure.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a> |
+<a href="../tr/programs/configure.html" hreflang="tr" rel="alternate" title="Türkçe">&nbsp;tr&nbsp;</a></p>
+</div>
+
+ <p>The <code>configure</code> script configures the source tree
+ for compiling and installing the Apache HTTP Server on your
+ particular platform. Various options allow the compilation of a
+ server corresponding to your personal requirements.</p>
+
+ <p>This script, included in the root directory of the source
+ distribution, is for compilation on Unix and Unix-like systems
+ only. For other platforms, see the <a href="../platform/">platform</a> documentation.</p>
+</div>
+<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#synopsis">Synopsis</a></li>
+<li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li>
+<li><img alt="" src="../images/down.gif" /> <a href="#env">Environment variables</a></li>
+</ul><h3>See also</h3><ul class="seealso"><li><a href="../install.html">Compiling and Installing</a></li><li><a href="#comments_section">Comments</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="synopsis" id="synopsis">Synopsis</a></h2>
+ <p>You should call the <code>configure</code> script from within the
+ root directory of the distribution.</p>
+
+ <p><code><strong>./configure</strong> [<var>OPTION</var>]...
+ [<var>VAR</var>=<var>VALUE</var>]...</code></p>
+
+ <p>To assign environment variables (e.g. <code>CC</code>,
+ <code>CFLAGS</code> ...), specify them as
+ <code><var>VAR</var>=<var>VALUE</var></code>. See <a href="#env">below</a>
+ for descriptions of some of the useful variables.</p>
+</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="options" id="options">Options</a></h2>
+ <ul>
+ <li><a href="#configurationoptions">Configuration options</a></li>
+ <li><a href="#installationdirectories">Installation directories</a></li>
+ <li><a href="#systemtypes">System types</a></li>
+ <li><a href="#optionalfeatures">Optional features</a></li>
+ <li><a href="#supportopt">Options for support programs</a></li>
+ </ul>
+
+ <h3><a name="configurationoptions" id="configurationoptions">Configuration options</a></h3>
+
+ <p>The following options influence the behavior of
+ <code>configure</code> itself.</p>
+
+ <dl>
+ <dt><code>-C</code></dt>
+ <dt><code>--config-cache</code></dt>
+ <dd>This is an alias for <code>--cache-file=config.cache</code></dd>
+
+ <dt><code>--cache-file=<var>FILE</var></code></dt>
+ <dd>The test results will be cached in file <var>FILE</var>.
+ This option is disabled by default.</dd>
+
+ <dt><code>-h</code></dt>
+ <dt><code>--help [short|recursive]</code></dt>
+ <dd>Output the help and exit. With the argument <code>short</code> only
+ options specific to this package will displayed. The argument
+ <code>recursive</code> displays the short help of all the included
+ packages.</dd>
+
+ <dt><code>-n</code></dt>
+ <dt><code>--no-create</code></dt>
+ <dd>The <code>configure</code> script is run normally but does
+ not create output files. This is useful to check the test results
+ before generating makefiles for compilation.</dd>
+
+ <dt><code>-q</code></dt>
+ <dt><code>--quiet</code></dt>
+ <dd>Do not print <code>checking ...</code> messages during the
+ configure process.</dd>
+
+ <dt><code>--srcdir=<var>DIR</var></code></dt>
+ <dd>Defines directory <var>DIR</var> to be the source file directory.
+ Default is the directory where <code>configure</code> is located, or
+ the parent directory.</dd>
+
+ <dt><code>--silent</code></dt>
+ <dd>Same as <code>--quiet</code></dd>
+
+ <dt>-V</dt>
+ <dt>--version</dt>
+ <dd>Display copyright information and exit.</dd>
+ </dl>
+
+
+ <h3><a name="installationdirectories" id="installationdirectories">Installation
+ directories</a></h3>
+
+ <p>These options define the installation directory. The installation
+ tree depends on the selected layout.</p>
+
+ <dl>
+ <dt><code>--prefix=<var>PREFIX</var></code></dt>
+ <dd>Install architecture-independent files in <var>PREFIX</var>.
+ By default the installation directory is set to
+ <code>/usr/local/apache2</code>.</dd>
+
+ <dt><code>--exec-prefix=<var>EPREFIX</var></code></dt>
+ <dd>Install architecture-dependent files in <var>EPREFIX</var>.
+ By default the installation directory is set to the
+ <var>PREFIX</var> directory.</dd>
+ </dl>
+
+ <p>By default, <code>make install</code> will install all the files in
+ <code>/usr/local/apache2/bin</code>, <code>/usr/local/apache2/lib</code>
+ etc. You can specify an installation prefix other than
+ <code>/usr/local/apache2</code> using <code>--prefix</code>,
+ for instance <code>--prefix=$HOME</code>.</p>
+
+ <h4><a name="layout" id="layout">Define a directory layout</a></h4>
+ <dl>
+ <dt><code>--enable-layout=<var>LAYOUT</var></code></dt>
+ <dd>Configure the source code and build scripts to assume an
+ installation tree based on the layout <var>LAYOUT</var>. This allows
+ you to separately specify the locations for each type of file within
+ the Apache HTTP Server installation. The <code>config.layout</code>
+ file contains several example configurations, and you can also create
+ your own custom configuration following the examples. The different
+ layouts in this file are grouped into <code>&lt;Layout
+ FOO&gt;...&lt;/Layout&gt;</code> sections and referred to by name as
+ in <code>FOO</code>. The default layout is <code>Apache</code>.</dd>
+ </dl>
+
+
+ <h4><a name="directoryfinetuning" id="directoryfinetuning">Fine tuning of the installation
+ directories</a></h4>
+
+ <p>For better control of the installation directories, use the options
+ below. Please note that the directory defaults are set by
+ <code>autoconf</code> and are overwritten by the corresponding layout
+ setting.</p>
+
+ <dl>
+
+ <dt><code>--bindir=<var>DIR</var></code></dt>
+ <dd>Install user executables in <var>DIR</var>. The user executables
+ are supporting programs like <code class="program"><a href="../programs/htpasswd.html">htpasswd</a></code>,
+ <code class="program"><a href="../programs/dbmmanage.html">dbmmanage</a></code>, etc. which are useful for site
+ administrators. By default <var>DIR</var> is set to
+ <code><var>EPREFIX</var>/bin</code>.</dd>
+
+ <dt><code>--datadir=<var>DIR</var></code></dt>
+ <dd>Install read-only architecture-independent data in <var>DIR</var>.
+ By default <code>datadir</code> is set to
+ <code><var>PREFIX</var>/share</code>. This option is offered by
+ <code>autoconf</code> and currently unused.</dd>
+
+ <dt><code>--includedir=<var>DIR</var></code></dt>
+ <dd>Install C header files in <var>DIR</var>. By default
+ <code>includedir</code> is set to
+ <code><var>EPREFIX</var>/include</code>.</dd>
+
+ <dt><code>--infodir=<var>DIR</var></code></dt>
+ <dd>Install info documentation in <var>DIR</var>.
+ By default <code>infodir</code> is set to
+ <code><var>PREFIX</var>/info</code>. This option is currently
+ unused.</dd>
+
+ <dt><code>--libdir=<var>DIR</var></code></dt>
+ <dd>Install object code libraries in <var>DIR</var>. By default
+ <code>libdir</code> is set to
+ <code><var>EPREFIX</var>/lib</code>.</dd>
+
+ <dt><code>--libexecdir=<var>DIR</var></code></dt>
+ <dd>Install the program executables (i.e., shared modules) in
+ <var>DIR</var>. By default <code>libexecdir</code> is set to
+ <code><var>EPREFIX</var>/modules</code>.</dd>
+
+ <dt><code>--localstatedir=<var>DIR</var></code></dt>
+ <dd>Install modifiable single-machine data in <var>DIR</var>.
+ By default <code>localstatedir</code> is set to
+ <code><var>PREFIX</var>/var</code>. This option is offered by
+ <code>autoconf</code> and currently unused.</dd>
+
+ <dt><code>--mandir=<var>DIR</var></code></dt>
+ <dd>Install the man documentation in <var>DIR</var>. By default
+ <code>mandir</code> is set to
+ <code><var>EPREFIX</var>/man</code>.</dd>
+
+ <dt><code>--oldincludedir=<var>DIR</var></code></dt>
+ <dd>Install C header files for non-gcc in <var>DIR</var>.
+ By default <code>oldincludedir</code> is set to
+ <code>/usr/include</code>. This option is offered by
+ <code>autoconf</code> and currently unused.</dd>
+
+ <dt><code>--sbindir=<var>DIR</var></code></dt>
+ <dd>Install the system administrator executables in <var>DIR</var>.
+ Those are server programs like <code class="program"><a href="../programs/httpd.html">httpd</a></code>,
+ <code class="program"><a href="../programs/apachectl.html">apachectl</a></code>, <code class="program"><a href="../programs/suexec.html">suexec</a></code>, etc. which
+ are necessary to run the Apache HTTP Server. By default
+ <code>sbindir</code> is set to
+ <code><var>EPREFIX</var>/sbin</code>.</dd>
+
+ <dt><code>--sharedstatedir=<var>DIR</var></code></dt>
+ <dd>Install modifiable architecture-independent data in <var>DIR</var>.
+ By default <code>sharedstatedir</code> is set to
+ <code><var>PREFIX</var>/com</code>. This option is offered by
+ <code>autoconf</code> and currently unused.</dd>
+
+ <dt><code>--sysconfdir=<var>DIR</var></code></dt>
+ <dd>Install read-only single-machine data like the server configuration
+ files <code>httpd.conf</code>, <code>mime.types</code>, etc. in
+ <var>DIR</var>. By default <code>sysconfdir</code> is set to
+ <code><var>PREFIX</var>/conf</code>.</dd>
+ </dl>
+
+
+
+ <h3><a name="systemtypes" id="systemtypes">System types</a></h3>
+
+ <p>These options are used to cross-compile the Apache HTTP Server to run on
+ another system. In normal cases, when building and running the server on
+ the same system, these options are not used.</p>
+
+ <dl>
+ <dt><code>--build=<var>BUILD</var></code></dt>
+ <dd>Defines the system type of the system on which the tools are being
+ built. It defaults to the result of the script
+ <code>config.guess</code>.</dd>
+
+ <dt><code>--host=<var>HOST</var></code></dt>
+ <dd>Defines the system type of the system on which the server will run.
+ <var>HOST</var> defaults to <var>BUILD</var>.</dd>
+
+ <dt><code>--target=<var>TARGET</var></code></dt>
+ <dd>Configure for building compilers for the system type
+ <var>TARGET</var>. It defaults to <var>HOST</var>. This option is
+ offered by <code>autoconf</code> and not necessary for the Apache HTTP
+ Server.</dd>
+ </dl>
+
+
+ <h3><a name="optionalfeatures" id="optionalfeatures">Optional Features</a></h3>
+
+ <p>These options are used to fine tune the features your HTTP server will
+ have.</p>
+
+ <h4><a name="generaloptfeat" id="generaloptfeat">General syntax</a></h4>
+ <p>Generally you can use the following syntax to enable or disable a
+ feature:</p>
+
+ <dl>
+ <dt><code>--disable-<var>FEATURE</var></code></dt>
+ <dd>Do not include <var>FEATURE</var>. This is the same as
+ <code>--enable-<var>FEATURE</var>=no</code>.</dd>
+
+ <dt><code>--enable-<var>FEATURE</var>[=<var>ARG</var>]</code></dt>
+ <dd>Include <var>FEATURE</var>. The default value for <var>ARG</var>
+ is <code>yes</code>.</dd>
+
+ <dt><code>--enable-<var>MODULE</var>=shared</code></dt>
+ <dd>The corresponding module will be built as a DSO module.
+ By default enabled modules are linked dynamically.</dd>
+
+ <dt><code>--enable-<var>MODULE</var>=static</code></dt>
+ <dd>The corresponding module will be linked statically.</dd>
+ </dl>
+
+ <div class="note"><h3>Note</h3>
+ <code>configure</code> will not complain about
+ <code>--enable-<var>foo</var></code> even if <var>foo</var> doesn't
+ exist, so you need to type carefully.
+ </div>
+
+
+ <h4><a name="choosemodules" id="choosemodules">Choosing modules to compile</a></h4>
+ <p>Most modules are compiled by default and have to be disabled
+ explicitly or by using the keyword <code>few</code>
+ (see <code>--enable-modules</code>, <code>--enable-mods-shared</code>
+ and <code>--enable-mods-static</code> below for further explanation)
+ or <code>--enable-modules=none</code> to be removed as a group.</p>
+
+ <p>Other modules are not compiled by default and have to be enabled
+ explicitly or by using the keywords <code>all</code> or
+ <code>reallyall</code> to be available.</p>
+
+ <p>To find out which modules are compiled by default, run
+ <code>./configure -h</code> or <code>./configure --help</code>
+ and look under <code>Optional Features</code>. Suppose you
+ are interested in <code>mod_example1</code> and
+ <code>mod_example2</code>, and you
+ see this:</p>
+
+ <div class="example"><pre>Optional Features:
+ ...
+ --disable-example1 example module 1
+ --enable-example2 example module 2
+ ...</pre></div>
+
+ <p>Then <code>mod_example1</code> is enabled by default,
+ and you would use <code>--disable-example1</code> to not
+ compile it. <code>mod_example2</code> is disabled by
+ default, and you would use <code>--enable-example2</code>
+ to compile it.</p>
+
+
+ <h4><a name="mpms" id="mpms">Multi-Processing Modules</a></h4>
+ <p><a href="../mpm.html">Multi-Processing Modules</a>, or MPMs, implement
+ the basic behavior of the server. A single MPM must be active in order
+ for the server to function. The list of available MPMs appears on the
+ <a href="../mod/">module index page</a>.</p>
+
+ <p>MPMs can be built as DSOs for dynamic loading or statically linked with
+ the server, and are enabled using the following options:</p>
+
+ <dl>
+ <dt><code>--with-mpm=MPM</code></dt>
+ <dd>
+ <p>Choose the default MPM for your server. If MPMs are built as DSO
+ modules (see <code>--enable-mpms-shared</code>), this directive
+ selects the MPM which will be loaded in the default configuration
+ file. Otherwise, this directive selects the only available MPM,
+ which will be statically linked into the server.</p>
+ <p>If this option is omitted, the <a href="../mpm.html#defaults">default
+ MPM</a> for your operating system will be used.</p>
+ </dd>
+
+ <dt><code>--enable-mpms-shared=<var>MPM-LIST</var></code></dt>
+ <dd>
+ <p>Enable a list of MPMs as dynamic shared modules. One of these
+ modules must be loaded dynamically using the
+ <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code> directive.</p>
+ <p><var>MPM-LIST</var> is a space-separated list of MPM names
+ enclosed by quotation marks. For example:</p>
+ <div class="example"><p><code>
+ --enable-mpms-shared='prefork worker'
+ </code></p></div>
+ <p>Additionally you can use the special keyword <code>all</code>,
+ which will select all MPMs which support dynamic loading on the
+ current platform and build them as DSO modules. For example:</p>
+ <div class="example"><p><code>
+ --enable-mpms-shared=all
+ </code></p></div>
+ </dd>
+ </dl>
+
+
+ <h4><a name="modules" id="modules">Third-party modules</a></h4>
+ <p>To add additional third-party modules use the following options:</p>
+
+ <dl>
+ <dt><code>--with-module=<var>module-type</var>:<var>module-file</var>[,
+ <var>module-type</var>:<var>module-file</var>]</code></dt>
+ <dd><p>Add one or more third-party modules to the list of statically linked
+ modules. The module source file <code><var>module-file</var></code>
+ will be searched in the <code>modules/<var>module-type</var></code>
+ subdirectory of your Apache HTTP server source tree. If it is not found
+ there <code>configure</code> is considering <var>module-file</var> to be
+ an absolute file path and tries to copy the source file into the
+ <var>module-type</var> subdirectory. If the subdirectory doesn't
+ exist it will be created and populated with a standard
+ <code>Makefile.in</code>.</p>
+ <p>This option is useful to add small external modules consisting of
+ one source file. For more complex modules you should read the
+ vendor's documentation.</p>
+ <div class="note"><h3>Note</h3>
+ If you want to build a DSO module instead of a statically linked
+ use <code class="program"><a href="../programs/apxs.html">apxs</a></code>.</div>
+ </dd>
+ </dl>
+
+
+ <h4><a name="otheroptfeat" id="otheroptfeat">Cumulative and other options</a></h4>
+ <dl>
+ <dt><code>--enable-maintainer-mode</code></dt>
+ <dd>Turn on debugging and compile time warnings
+ and load all compiled modules.</dd>
+
+ <dt><code>--enable-mods-shared=<var>MODULE-LIST</var></code></dt>
+ <dd>
+ <p>Defines a list of modules to be enabled and build as dynamic
+ shared modules. This mean, these module have to be loaded
+ dynamically by using the <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code> directive.</p>
+ <p><var>MODULE-LIST</var> is a space separated list of modulenames
+ enclosed by quotation marks. The module names are given without the
+ preceding <code>mod_</code>. For example:</p>
+ <div class="example"><p><code>
+ --enable-mods-shared='headers rewrite dav'
+ </code></p></div>
+ <p>Additionally you can use the special keywords <code>reallyall</code>,
+ <code>all</code>, <code>most</code> and <code>few</code>.
+ For example,</p>
+ <div class="example"><p><code>
+ --enable-mods-shared=most
+ </code></p></div>
+ <p>will compile most modules and build them as DSO modules,</p>
+ <div class="example"><p><code>
+ --enable-mods-shared=few
+ </code></p></div>
+ <p>will only compile a very basic set of modules.</p>
+ <p>The default set is <code>most</code>.</p>
+
+ <p>The <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code> directives for
+ the chosen modules will be automatically generated in the main
+ configuration file. By default, all those directives will be commented
+ out except for the modules that are either required or explicitly selected
+ by a configure <code>--enable-foo</code> argument. You can change the set
+ of loaded modules by activating or deactivating the <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code> directives in
+ <code>httpd.conf</code>. In addition the
+ <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code> directives for all
+ built modules can be activated via the configure option
+ <code>--enable-load-all-modules</code>.</p>
+ </dd>
+
+ <dt><code>--enable-mods-static=<var>MODULE-LIST</var></code></dt>
+ <dd>This option behaves similar to <code>--enable-mods-shared</code>,
+ but will link the given modules statically. This mean, these modules
+ will always be present while running <code class="program"><a href="../programs/httpd.html">httpd</a></code>. They need
+ not be loaded with <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>.</dd>
+
+ <dt><code>--enable-modules=<var>MODULE-LIST</var></code></dt>
+ <dd>This option behaves like to <code>--enable-mods-shared</code>,
+ and will also link the given modules dynamically. The special
+ keyword <code>none</code> disables the build of all modules.</dd>
+
+ <dt><code>--enable-v4-mapped</code></dt>
+ <dd>Allow IPv6 sockets to handle IPv4 connections.</dd>
+
+ <dt><code>--with-port=<var>PORT</var></code></dt>
+ <dd>This defines the port on which <code class="program"><a href="../programs/httpd.html">httpd</a></code> will listen.
+ This port number is used when generating the configuration file
+ <code>httpd.conf</code>. The default is 80.</dd>
+
+ <dt><code>--with-program-name</code></dt>
+ <dd>Define an alternative executable name. The default is
+ <code>httpd</code>.</dd>
+ </dl>
+
+
+
+ <h3><a name="packages" id="packages">Optional packages</a></h3>
+ <p>These options are used to define optional packages.</p>
+
+ <h4><a name="generalpackages" id="generalpackages">General syntax</a></h4>
+ <p>Generally you can use the following syntax to define an optional
+ package:</p>
+
+ <dl>
+ <dt><code>--with-<var>PACKAGE</var>[=<var>ARG</var>]</code></dt>
+ <dd>Use the package <var>PACKAGE</var>. The default value for
+ <var>ARG</var> is <code>yes</code>.</dd>
+
+ <dt><code>--without-<var>PACKAGE</var></code></dt>
+ <dd>Do not use the package <var>PACKAGE</var>. This is the same as
+ <code>--with-<var>PACKAGE</var>=no</code>. This option is provided by
+ <code>autoconf</code> but not very useful for the Apache HTTP
+ Server.</dd>
+ </dl>
+
+
+
+
+ <h4><a name="packageopt" id="packageopt">Specific packages</a></h4>
+ <dl>
+ <dt><code>--with-apr=<var>DIR</var>|<var>FILE</var></code></dt>
+ <dd>The <a class="glossarylink" href="../glossary.html#apr" title="see glossary">Apache Portable Runtime</a> (APR)
+ is part of the httpd
+ source distribution and will automatically be build together with the
+ HTTP server. If you want to use an already installed APR instead you
+ have to tell <code>configure</code> the path to the
+ <code>apr-config</code> script. You may set the absolute path and name
+ or the directory to the installed APR. <code>apr-config</code> must
+ exist within this directory or the subdirectory
+ <code>bin</code>.</dd>
+
+ <dt><code>--with-apr-util=<var>DIR</var>|<var>FILE</var></code></dt>
+ <dd>The Apache Portable Runtime Utilities (APU) are part of the
+ httpd source distribution and will automatically be build
+ together with the HTTP server. If you want to use an already installed
+ APU instead you have to tell <code>configure</code> the path to the
+ <code>apu-config</code> script. You may set the absolute path and name
+ or the directory to the installed APU. <code>apu-config</code> must
+ exist within this directory or the subdirectory
+ <code>bin</code>.</dd>
+
+ <dt><code>--with-ssl=<var>DIR</var></code></dt>
+ <dd>If <code class="module"><a href="../mod/mod_ssl.html">mod_ssl</a></code> has been enabled <code>configure</code>
+ searches for an installed OpenSSL. You can set the directory path
+ to the SSL/TLS toolkit instead.</dd>
+
+ <dt><code>--with-z=<var>DIR</var></code></dt>
+ <dd><code>configure</code> searches automatically for an installed
+ <code>zlib</code> library if your source configuration requires one
+ (e.g., when <code class="module"><a href="../mod/mod_deflate.html">mod_deflate</a></code> is enabled). You can set the
+ directory path to the compression library instead.</dd>
+ </dl>
+
+ <p>Several features of the Apache HTTP Server, including
+ <code class="module"><a href="../mod/mod_authn_dbm.html">mod_authn_dbm</a></code> and <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>'s DBM
+ <code class="directive"><a href="../mod/mod_rewrite.html#rewritemap">RewriteMap</a></code> use simple
+ key/value databases for quick lookups of information. SDBM is included
+ in the APU, so this database is always available. If you would like to
+ use other database types, use the following options to enable
+ them:</p>
+
+ <dl>
+ <dt><code>--with-gdbm[=<var>path</var>]</code></dt>
+ <dd>If no <var>path</var> is specified, <code>configure</code> will
+ search for the include files and libraries of a GNU DBM
+ installation in the usual search paths. An explicit
+ <var>path</var> will cause <code>configure</code> to look in
+ <code><var>path</var>/lib</code> and
+ <code><var>path</var>/include</code> for the relevant files.
+ Finally, the <var>path</var> may specify specific include and
+ library paths separated by a colon.</dd>
+
+ <dt><code>--with-ndbm[=<var>path</var>]</code></dt>
+ <dd>Like <code>--with-gdbm</code>, but searches for a New DBM
+ installation.</dd>
+
+ <dt><code>--with-berkeley-db[=<var>path</var>]</code></dt>
+ <dd>Like <code>--with-gdbm</code>, but searches for a Berkeley DB
+ installation.</dd>
+ </dl>
+
+ <div class="note"><h3>Note</h3>
+ <p>The DBM options are provided by the APU and passed through to its
+ configuration script. They are useless when using an already
+ installed APU defined by <code>--with-apr-util</code>.</p>
+ <p>You may use more then one DBM implementation together with your
+ HTTP server. The appropriated DBM type will be configured within
+ the runtime configuration at each time.</p>
+ </div>
+
+
+
+ <h3><a name="supportopt" id="supportopt">Options for support programs</a></h3>
+ <dl>
+ <dt><code>--enable-static-support</code></dt>
+ <dd>Build a statically linked version of the support binaries. This
+ means, a stand-alone executable will be built with all the necessary
+ libraries integrated. Otherwise the support binaries are linked
+ dynamically by default.</dd>
+
+ <dt><code>--enable-suexec</code></dt>
+ <dd>Use this option to enable <code class="program"><a href="../programs/suexec.html">suexec</a></code>, which allows you to set
+ uid and gid for spawned processes. <strong>Do not use this
+ option unless you understand all the security implications of
+ running a suid binary on your server.</strong> Further options
+ to configure <code class="program"><a href="../programs/suexec.html">suexec</a></code> are described <a href="#suexec">below</a>.</dd>
+ </dl>
+
+ <p>It is possible to create a statically linked binary of a single
+ support program by using the following options:</p>
+
+ <dl>
+ <dt><code>--enable-static-ab</code></dt>
+ <dd>Build a statically linked version of <code class="program"><a href="../programs/ab.html">ab</a></code>.</dd>
+
+
+ <dt><code>--enable-static-checkgid</code></dt>
+ <dd>Build a statically linked version of <code>checkgid</code>.</dd>
+
+ <dt><code>--enable-static-htdbm</code></dt>
+ <dd>Build a statically linked version of <code class="program"><a href="../programs/htdbm.html">htdbm</a></code>.</dd>
+
+ <dt><code>--enable-static-htdigest</code></dt>
+ <dd>Build a statically linked version of <code class="program"><a href="../programs/htdigest.html">htdigest</a></code>.</dd>
+
+ <dt><code>--enable-static-htpasswd</code></dt>
+ <dd>Build a statically linked version of <code class="program"><a href="../programs/htpasswd.html">htpasswd</a></code>.</dd>
+
+ <dt><code>--enable-static-logresolve</code></dt>
+ <dd>Build a statically linked version of <code class="program"><a href="../programs/logresolve.html">logresolve</a></code>.</dd>
+
+ <dt><code>--enable-static-rotatelogs</code></dt>
+ <dd>Build a statically linked version of <code class="program"><a href="../programs/rotatelogs.html">rotatelogs</a></code>.</dd>
+ </dl>
+
+ <h4><a name="suexec" id="suexec"><code>suexec</code> configuration options</a></h4>
+
+ <p>The following options are used to fine tune the behavior of <code class="program"><a href="../programs/suexec.html">suexec</a></code>. See <a href="suexec.html#install">Configuring and installing suEXEC</a>
+ for further information.</p>
+
+ <dl>
+ <dt><code>--with-suexec-bin</code></dt>
+ <dd>This defines the path to <code class="program"><a href="../programs/suexec.html">suexec</a></code> binary.
+ Default is <code>--sbindir</code> (see <a href="#directoryfinetuning">Fine tuning of installation directories</a>).</dd>
+
+ <dt><code>--with-suexec-caller</code></dt>
+ <dd>This defines the user allowed to call <code class="program"><a href="../programs/suexec.html">suexec</a></code>.
+ It should be the same as the user under which
+ <code class="program"><a href="../programs/httpd.html">httpd</a></code> normally runs.</dd>
+
+ <dt><code>--with-suexec-docroot</code></dt>
+ <dd>This defines the directory tree under which <code class="program"><a href="../programs/suexec.html">suexec</a></code> access is allowed for executables. Default value is
+ <code>--datadir/htdocs</code>.</dd>
+
+ <dt><code>--with-suexec-gidmin</code></dt>
+ <dd>Define this as the lowest GID allowed to be a target user for
+ <code class="program"><a href="../programs/suexec.html">suexec</a></code>. The default value is 100.</dd>
+
+ <dt><code>--with-suexec-logfile</code></dt>
+ <dd>This defines the filename of the <code class="program"><a href="../programs/suexec.html">suexec</a></code> logfile.
+ By default the logfile is named <code>suexec_log</code> and located in
+ <code>--logfiledir</code>.</dd>
+
+ <dt><code>--with-suexec-safepath</code></dt>
+ <dd>Define the value of the environment variable <code>PATH</code> to
+ be set for processes started by <code class="program"><a href="../programs/suexec.html">suexec</a></code>. Default
+ value is <code>/usr/local/bin:/usr/bin:/bin</code>.</dd>
+
+ <dt><code>--with-suexec-userdir</code></dt>
+ <dd>This defines the subdirectory under the user's directory that
+ contains all executables for which <code class="program"><a href="../programs/suexec.html">suexec</a></code> access
+ is allowed. This setting is necessary when you want to use
+ <code class="program"><a href="../programs/suexec.html">suexec</a></code> together with user-specific directories (as
+ provided by <code class="module"><a href="../mod/mod_userdir.html">mod_userdir</a></code>). The default is
+ <code>public_html</code>.</dd>
+
+ <dt><code>--with-suexec-uidmin</code></dt>
+ <dd>Define this as the lowest UID allowed to be a target user for
+ <code class="program"><a href="../programs/suexec.html">suexec</a></code>. The default value is 100.</dd>
+
+ <dt><code>--with-suexec-umask</code></dt>
+ <dd>Set <code>umask</code> for processes started by
+ <code class="program"><a href="../programs/suexec.html">suexec</a></code>. It defaults to your system settings.</dd>
+ </dl>
+
+
+</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="env" id="env">Environment variables</a></h2>
+ <p>There are some useful environment variables to override the choices made by
+ <code>configure</code> or to help it to find libraries and programs with
+ nonstandard names or locations.</p>
+
+
+ <dl>
+ <dt><code>CC</code></dt>
+ <dd>Define the C compiler command to be used for compilation.</dd>
+
+ <dt><code>CFLAGS</code></dt>
+ <dd>Set C compiler flags you want to use for compilation.</dd>
+
+ <dt><code>CPP</code></dt>
+ <dd>Define the C preprocessor command to be used.</dd>
+
+ <dt><code>CPPFLAGS</code></dt>
+ <dd>Set C/C++ preprocessor flags, e.g. <code>-I<var>includedir</var></code>
+ if you have headers in a nonstandard directory <var>includedir</var>.</dd>
+
+ <dt><code>LDFLAGS</code></dt>
+ <dd>Set linker flags, e.g. <code>-L<var>libdir</var></code> if you have
+ libraries in a nonstandard directory <var>libdir</var>.</dd>
+ </dl>
+</div></div>
+<div class="bottomlang">
+<p><span>Available Languages: </span><a href="../en/programs/configure.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../fr/programs/configure.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
+<a href="../ko/programs/configure.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a> |
+<a href="../tr/programs/configure.html" hreflang="tr" rel="alternate" title="Türkçe">&nbsp;tr&nbsp;</a></p>
+</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&amp;A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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