172 lines
7.8 KiB
HTML
172 lines
7.8 KiB
HTML
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<!-- This manual describes ASDF, a system definition facility
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for Common Lisp programs and libraries.
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You can find the latest version of this manual at
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https://common-lisp.net/project/asdf/asdf.html.
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ASDF Copyright (C) 2001-2019 Daniel Barlow and contributors.
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This manual Copyright (C) 2001-2019 Daniel Barlow and contributors.
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This manual revised (C) 2009-2019 Robert P. Goldman and Francois-Rene Rideau.
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Permission is hereby granted, free of charge, to any person obtaining
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<title>Configurations (ASDF Manual)</title>
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<meta name="description" content="Configurations (ASDF Manual)">
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<link href="index.html" rel="start" title="Top">
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Controlling-where-ASDF-searches-for-systems.html" rel="up" title="Controlling where ASDF searches for systems">
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<link href="Truenames-and-other-dangers.html" rel="next" title="Truenames and other dangers">
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</head>
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<div class="section" id="Configurations">
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<div class="header">
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<p>
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Next: <a href="Truenames-and-other-dangers.html" accesskey="n" rel="next">Truenames and other dangers</a>, Previous: <a href="Controlling-where-ASDF-searches-for-systems.html" accesskey="p" rel="prev">Controlling where ASDF searches for systems</a>, Up: <a href="Controlling-where-ASDF-searches-for-systems.html" accesskey="u" rel="up">Controlling where ASDF searches for systems</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<span id="Configurations-1"></span><h3 class="section">8.1 Configurations</h3>
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<p>Configurations specify paths where to find system files.
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</p>
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<ol>
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<li> The search registry may use some hardcoded wrapping registry specification.
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This allows some implementations (notably SBCL) to specify where to find
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some special implementation-provided systems that
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need to precisely match the version of the implementation itself.
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</li><li> An application may explicitly initialize the source-registry configuration
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using the configuration API
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(see <a href="Controlling-where-ASDF-searches-for-systems.html">Configuration API</a>, below)
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in which case this takes precedence.
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It may itself compute this configuration from the command-line,
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from a script, from its own configuration file, etc.
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</li><li> The source registry will be configured from
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the environment variable <code>CL_SOURCE_REGISTRY</code> if it exists.
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</li><li> The source registry will be configured from
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user configuration file
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<samp>$XDG_CONFIG_DIRS/common-lisp/source-registry.conf</samp>
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(which defaults to
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<samp>~/.config/common-lisp/source-registry.conf</samp>)
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if it exists.
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</li><li> The source registry will be configured from
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user configuration directory
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<samp>$XDG_CONFIG_DIRS/common-lisp/source-registry.conf.d/</samp>
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(which defaults to
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<samp>~/.config/common-lisp/source-registry.conf.d/</samp>)
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if it exists.
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</li><li> The source registry will be configured from
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default user configuration trees
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<samp>~/common-lisp/</samp> (since ASDF 3.1.2 only),
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<samp>~/.sbcl/systems/</samp> (on SBCL only),
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<samp>$XDG_DATA_HOME/common-lisp/systems/</samp> (no recursion, link farm)
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<samp>$XDG_DATA_HOME/common-lisp/source/</samp>.
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The <code>XDG_DATA_HOME</code> directory defaults to <samp>~/.local/share/</samp>.
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On Windows, the <code>local-appdata</code> and <code>appdata</code> directories are used instead.
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</li><li> The source registry will be configured from
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system configuration file
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<samp>/etc/common-lisp/source-registry.conf</samp>
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if it exists.
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</li><li> The source registry will be configured from
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system configuration directory
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<samp>/etc/common-lisp/source-registry.conf.d/</samp>
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if it exists.
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</li><li> The source registry will be configured from a default configuration.
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This configuration may allow for implementation-specific systems
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to be found, for systems to be found the current directory
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(at the time that the configuration is initialized) as well as
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<code>:directory</code> entries for <samp>$XDG_DATA_DIRS/common-lisp/systems/</samp> and
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<code>:tree</code> entries for <samp>$XDG_DATA_DIRS/common-lisp/source/</samp>,
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where <code>XDG_DATA_DIRS</code> defaults to <samp>/usr/local/share</samp> and <samp>/usr/share</samp> on Unix,
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and the <code>common-appdata</code> directory on Windows.
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</li><li> The source registry may include implementation-dependent directories
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that correspond to implementation-provided extensions.
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</li></ol>
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<p>Each of these configurations is specified as an s-expression
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in a trivial domain-specific language (defined below).
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Additionally, a more shell-friendly syntax is available
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for the environment variable (defined yet below).
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</p>
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<p>Each of these configurations is only used if the previous
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configuration explicitly or implicitly specifies that it
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includes its inherited configuration.
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</p>
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<p>Additionally, some implementation-specific directories
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may be automatically prepended to whatever directories are specified
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in configuration files, no matter if the last one inherits or not.
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</p>
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</div>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Truenames-and-other-dangers.html">Truenames and other dangers</a>, Previous: <a href="Controlling-where-ASDF-searches-for-systems.html">Controlling where ASDF searches for systems</a>, Up: <a href="Controlling-where-ASDF-searches-for-systems.html">Controlling where ASDF searches for systems</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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