From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: C Hello World Emacs module Date: Sat, 06 Nov 2021 14:05:30 +0100 Message-ID: <87r1bto2n9.fsf@zoho.eu> References: <87mtnn23a8.fsf@zoho.eu> <87r1cyr4f7.fsf@online.de> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21193"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:WsjLYeet7hUOec7+SkDK8PVRhOE= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat Nov 06 14:06:08 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mjLOa-0005Jj-4T for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 06 Nov 2021 14:06:08 +0100 Original-Received: from localhost ([::1]:40340 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mjLOY-0003HW-Vj for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 06 Nov 2021 09:06:06 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50172) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mjLOE-0003DD-B7 for help-gnu-emacs@gnu.org; Sat, 06 Nov 2021 09:05:46 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:33608) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mjLOC-0003jl-98 for help-gnu-emacs@gnu.org; Sat, 06 Nov 2021 09:05:46 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mjLO8-0004W6-IO for help-gnu-emacs@gnu.org; Sat, 06 Nov 2021 14:05:40 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:134408 Archived-At: Emacs Dynamic Module example with all the fixings: https://dataswamp.org/~incal/emacs-init/more/dm/ Here's the C. Follow the hyperlink for the Makefile, header file, and Elisp. #include "dm.h" #include #include int plugin_is_GPL_compatible; int emacs_module_init(struct emacs_runtime* runtime) { if (runtime->size < (long int)sizeof(*runtime)) { return 1; // incompatible/mismatch Emacs binary } emacs_env* env = runtime->get_environment(runtime); if (env->size < (long int)sizeof(*env)) { return 2; // ditto module API } int __attribute__((unused)) emacs_version; if ((long int)sizeof(struct emacs_env_29) <= env->size) { emacs_version = 29; } else { return 3; // too old Emacs } emacs_value hw_func = env->make_function(env, 0, 0, hw, NULL, NULL); emacs_value hw_symbol = env->intern(env, "hw-func"); emacs_value args[] = {hw_symbol, hw_func}; env->funcall(env, env->intern(env, "defalias"), 2, args); return 0; } emacs_value hw(emacs_env* env, ptrdiff_t nargs __attribute__((unused)), emacs_value* args __attribute__((unused)), void* data __attribute__((unused))) { emacs_value str = env->make_string(env, "Dynamic Module Operational", 26); return str; } -- underground experts united https://dataswamp.org/~incal