== GNU Emacs ==
* [[aaptel]] wrote with the help of Daniel Colascione and Philipp Stephani a proper module API for Emacs 25.1.  You must ##./configure --with-modules## to enable it.
** The documentation was only integrated into the Elisp manual in version 26.2.  There is [https://phst.github.io/emacs-modules an earlier draft here].

* [[tromey]] has written a [https://github.com/tromey/emacs-ffi module using this API which provides a FFI]. It allows to load and any external library from Emacs Lisp, without writing any C.


=== Obsolete patches ===

SteveKemp announced a patch to fns.c on [[gnu.emacs.sources]] which allows Emacs to use shared libraries (2000-02-23).[Groups:fns.c&selm=Pine.GSO.4.10.10002231444090.20962-100000@tardis.tardis.ed.ac.uk]  He called it "Dynamic loading of extensions modules" and "Dynamically Extending Emacs".

The patch eliminated the need to recompile Emacs, by allowing C DEFUN functions to be placed in external libraries and dynamically loaded when they were needed.  The patch is no longer maintained.

-----

DaveLove released a follow up for Emacs that uses libtool.  According to Dave, "this won't get into Emacs until rms is persuaded it's not a GPL threat, probably with some additional hack".

http://www.loveshack.ukfsn.org/emacs/dynamic-loading 

The patch doesn't apply properly even on Emacs 22.


== XEmacs ==
* [http://www.xemacs.org/Documentation/21.5/html/emodules.html XEmacs using C Modules]
** The official doc is 404 (as of Sep 2018), [https://web.archive.org/web/20150705160314/http://www.xemacs.org/Documentation/21.5/html/emodules.html archive.org link]
* See also http://delysid.org/emacs/xemacs.html

----
CategoryExtensionLanguage