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| author | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
| commit | 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 (patch) | |
| tree | f1190704f78f04a2b0b4c977d20fe96a828377f1 /devdocs/elisp/dynamic-libraries.html | |
new repository
Diffstat (limited to 'devdocs/elisp/dynamic-libraries.html')
| -rw-r--r-- | devdocs/elisp/dynamic-libraries.html | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/devdocs/elisp/dynamic-libraries.html b/devdocs/elisp/dynamic-libraries.html new file mode 100644 index 00000000..32dd6e2e --- /dev/null +++ b/devdocs/elisp/dynamic-libraries.html @@ -0,0 +1,23 @@ + <h3 class="section">Dynamically Loaded Libraries</h3> <p>A <em>dynamically loaded library</em> is a library that is loaded on demand, when its facilities are first needed. Emacs supports such on-demand loading of support libraries for some of its features. </p> <dl> <dt id="dynamic-library-alist">Variable: <strong>dynamic-library-alist</strong> +</dt> <dd> +<p>This is an alist of dynamic libraries and external library files implementing them. </p> <p>Each element is a list of the form <code>(<var>library</var> <var>files</var>…)</code>, where the <code>car</code> is a symbol representing a supported external library, and the rest are strings giving alternate filenames for that library. </p> <p>Emacs tries to load the library from the files in the order they appear in the list; if none is found, the Emacs session won’t have access to that library, and the features it provides will be unavailable. </p> <p>Image support on some platforms uses this facility. Here’s an example of setting this variable for supporting images on MS-Windows: </p> <div class="example"> <pre class="example">(setq dynamic-library-alist + '((xpm "libxpm.dll" "xpm4.dll" "libXpm-nox4.dll") + (png "libpng12d.dll" "libpng12.dll" "libpng.dll" + "libpng13d.dll" "libpng13.dll") + (jpeg "jpeg62.dll" "libjpeg.dll" "jpeg-62.dll" + "jpeg.dll") + (tiff "libtiff3.dll" "libtiff.dll") + (gif "giflib4.dll" "libungif4.dll" "libungif.dll") + (svg "librsvg-2-2.dll") + (gdk-pixbuf "libgdk_pixbuf-2.0-0.dll") + (glib "libglib-2.0-0.dll") + (gobject "libgobject-2.0-0.dll"))) +</pre> +</div> <p>Note that image types <code>pbm</code> and <code>xbm</code> do not need entries in this variable because they do not depend on external libraries and are always available in Emacs. </p> <p>Also note that this variable is not meant to be a generic facility for accessing external libraries; only those already known by Emacs can be loaded through it. </p> <p>This variable is ignored if the given <var>library</var> is statically linked into Emacs. </p> +</dd> +</dl><div class="_attribution"> + <p class="_attribution-p"> + Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br> + <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Dynamic-Libraries.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Dynamic-Libraries.html</a> + </p> +</div> |
