112 lines
5.3 KiB
HTML
112 lines
5.3 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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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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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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<title>XDG base directory (ASDF Manual)</title>
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<meta name="description" content="XDG base directory (ASDF Manual)">
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<meta name="keywords" content="XDG base directory (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="Backward-Compatibility.html" rel="next" title="Backward Compatibility">
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<link href="Truenames-and-other-dangers.html" rel="prev" title="Truenames and other dangers">
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</style>
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</head>
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<body lang="en">
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<div class="section" id="XDG-base-directory">
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<div class="header">
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<p>
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Next: <a href="Backward-Compatibility.html" accesskey="n" rel="next">Backward Compatibility</a>, Previous: <a href="Truenames-and-other-dangers.html" accesskey="p" rel="prev">Truenames and other dangers</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="XDG-base-directory-1"></span><h3 class="section">8.3 XDG base directory</h3>
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<p>Note that we purport to respect the XDG base directory specification
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as to where configuration files are located,
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where data files are located,
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where output file caches are located.
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Mentions of XDG variables refer to that document.
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</p>
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<p><a href="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html">http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html</a>
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</p>
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<p>This specification allows the user to specify some environment variables
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to customize how applications behave to his preferences.
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</p>
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<p>On Windows platforms, even when not using Cygwin, and starting with ASDF 3.1.5,
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we still do a best effort at following the XDG base directory specification,
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even though it doesn’t exactly fit common practice for Windows applications.
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However, we replace the fixed Unix paths <samp>~/.local</samp>, <samp>/usr/local</samp> and <samp>/usr</samp>
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with their rough Windows equivalent <samp>Local AppData</samp>, <samp>AppData</samp>, <samp>Common AppData</samp>, etc.
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Since support for querying the Windows registry
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is not possible to do in reasonable amounts of portable Common Lisp code,
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ASDF 3 relies on the environment variables that Windows usually exports,
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and are hopefully in synch with the Windows registry.
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If you care about the details, see <samp>uiop/configuration.lisp</samp> and don’t hesitate to suggest improvements.
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</p>
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</div>
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</body>
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</html>
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