From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Thien-Thi Nguyen Newsgroups: gmane.emacs.devel Subject: alternate makefile variable constructs Date: Wed, 26 Mar 2003 08:45:49 +0100 Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Message-ID: Reply-To: ttn@glug.org NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: main.gmane.org 1048666275 12281 80.91.224.249 (26 Mar 2003 08:11:15 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Wed, 26 Mar 2003 08:11:15 +0000 (UTC) Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Wed Mar 26 09:11:14 2003 Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 18y60A-0003Bw-00 for ; Wed, 26 Mar 2003 09:11:14 +0100 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.12 #1 (Debian)) id 18y61S-00075z-00 for ; Wed, 26 Mar 2003 09:12:34 +0100 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 18y5yQ-00083u-01 for emacs-devel@quimby.gnus.org; Wed, 26 Mar 2003 03:09:26 -0500 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.10.13) id 18y5xh-000757-00 for emacs-devel@gnu.org; Wed, 26 Mar 2003 03:08:41 -0500 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.10.13) id 18y5xY-0006h6-00 for emacs-devel@gnu.org; Wed, 26 Mar 2003 03:08:36 -0500 Original-Received: from adsl-ull-160-175.42-151.net24.it ([151.42.175.160] helo=dream.glug.org) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 18y5x2-00065A-00 for emacs-devel@gnu.org; Wed, 26 Mar 2003 03:08:01 -0500 Original-Received: from ttn by dream.glug.org with local (Exim 3.35 #1 (Debian)) id 18y5bZ-0007bc-00 for ; Wed, 26 Mar 2003 08:45:49 +0100 Original-To: emacs-devel@gnu.org X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1b5 Precedence: list List-Id: Emacs development discussions. List-Help: List-Post: List-Subscribe: , List-Archive: List-Unsubscribe: , Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:12630 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:12630 folks, as alluded in previous blurbs, i'm doing a vms port of emacs 21. in src/Makefile.in, i have had success avoiding the cpp-inserting-spaces problem (openvms 7.3-1) by using this form of variable substitution: #ifdef VMS /* #define VMS_SUPPORT ${lispsource}vmsproc.elc ${lispsource}vms-patch.elc */ VMS_SUPPORT = ${lispsource}vmsproc.elc ${lispsource}vms-patch.elc #else /* #define VMS_SUPPORT */ VMS_SUPPORT = #endif that is, instead of using #define, use actual makefile variables. the requisite change in var `lisp' is correspondingly: - VMS_SUPPORT \ + $(VMS_SUPPORT) \ it seems to me for variables not user-settable (such as this one), the #define approach does not bring any added benefit. i welcome insight, however. in any case, cpp programs that insert spaces around "." lose for these instances: 9 lines matching "^#define.*[.]" in buffer: Makefile.in 230:#define START_FILES pre-crt0.o /usr/local/lib/gcc-crt0.o 232:#define START_FILES pre-crt0.o /lib/crt0.o 235:#define START_FILES ecrt0.o 490:#define YMF_PASS_LDFLAGS(flags) `./prefix-args -Xlinker flags` 544:#define UNEXEC unexec.o 547:#define UNEXEC_SRC unexec.c 647:#define MOUSE_SUPPORT ${lispsource}mouse.elc \ 662:#define MSDOS_SUPPORT ${lispsource}ls-lisp.elc ${lispsource}disp-table.elc \ 671:#define WINNT_SUPPORT ${lispsource}ls-lisp.elc ${lispsource}disp-table.elc \ (note: VMS_SUPPORT missing due to local change.) generalizing from the limited success, i propose we convert this small set of variables and their references from #define style to makefile style. alternatively, under vms i can kludge some TPU to do adhoc fixups, but i would prefer not to have to go that route. (i've already gone and done horrible things on the front end, as you may be able to surmise from work-in-progress make-mms-derivative.el below -- email me for an example 2mms file.) thi _________________________________________________ ;;; make-mms-derivative.el --- framework to do horrible things for VMS support ;; Copyright (C) 2003 Free Software Foundation, Inc. ;; Author: Thien-Thi Nguyen ;; Keywords: maint build vms mms makefile levitte autoconf war-is-a-lose ;; Favorite-TV-Game-Show: L'Eredità ;; This file is part of GNU Emacs. ;; GNU Emacs is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 2, or (at your option) ;; any later version. ;; GNU Emacs is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License ;; along with GNU Emacs; see the file COPYING. If not, write to the ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, ;; Boston, MA 02111-1307, USA. ;;; Commentary: ;; Under OpenVMS the standard make-like program is called MMS, which ;; looks for an input file in the default directory named DESCRIP.MMS ;; and runs the DCL command rules therein. As of 2003, the build ;; process requires a hand translation of the Makefile.in and related ;; Emacs-specific methodology to DCL and TPU commands, so to alleviate ;; this pain, we provide `make-mms-derivative', which given a source ;; FILENAME (under `make-mms-derivative-root-dir'), inserts the file ;; contents in a new buffer and loads FILENAME.2mms. The elisp in the ;; .2mms file can (do whatever -- it's emacs -- and) arrange to write ;; out the modified buffer after FILENAME.2mms loading by using: ;; ;; (make-mms-derivative-data 'write-under-root RELATIVE-FILENAME) ;; ;; where RELATIVE-FILENAME is something like "src/descrip.mms_in_in". ;; Over the long run, the convenience procedures provided (see source) ;; will be augmented by factoring maximally the .2mms files, squeezing ;; as much algorithm out of those nasty heuristics as possible. What ;; makes them nasty is not that they rely on the conventions of the ;; Emacs makefiles; that's no big deal. What makes them nasty is that ;; they rely on the conventions of separately maintained tools (namely ;; Autoconf 1.11 under OpenVMS and the rest of GNU), and the separation ;; of conventions is how people drift apart, dragging their software ;; behind mercilessly. ;; ;; In general, codified thought w/o self-synchronization is doomed. ;; That a generation would eat its young (most discriminatingly, even) ;; is no reason GNU cannot build around such woe. ;;; Code: (defvar make-mms-derivative-root-dir "~/build/GNU/emacs" "Source tree root directory.") (defvar make-mms-derivative-data nil "Alist of data specific to `make-mms-derivative'.") (defun make-mms-derivative-data (key &optional newval) (if newval (setq make-mms-derivative-data (cons (cons key newval) make-mms-derivative-data)) (cdr (assq key make-mms-derivative-data)))) (defun make-mms-derivative-write-under-root (rel-filename) (write-file (expand-file-name rel-filename make-mms-derivative-root-dir))) (defmacro make-mms-derivative-progn (msg &rest body) `(progn (message "(%s) %s" (point) ,msg) ,@body)) (put 'make-mms-derivative-progn 'lisp-indent-function 1) (defun make-mms-derivative-load-edits-file (name) (make-mms-derivative-data 'edits-filename name) (let ((i 0) tmp res) (while (progn (setq tmp (shell-command-to-string (format "grep '^;;;%s;;' %s | sed 's/^;;;[0-9][0-9]*;;//g'" i name))) (not (string= "" tmp))) (setq res (cons (cons i tmp) res) i (1+ i))) (make-mms-derivative-data 'raw-data res)) (load name)) (defun make-mms-derivative-insert-raw-data (n) (insert (cdr (assq n (make-mms-derivative-data 'raw-data))))) (defun make-mms-derivative (file) (interactive "fSource File: ") (let ((root (expand-file-name make-mms-derivative-root-dir)) (file (expand-file-name file))) (unless (string-match (concat "^" root) file) (error "Not under root (%s)" root)) (let ((edits-filename (concat file ".2mms"))) (unless (file-exists-p edits-filename) (error "Could not find %s" edits-filename)) (let* ((pre (+ (length root) (if (string= "/" (substring root -1)) 0 1))) (buf (get-buffer-create (format "*mms-derivative: %s" (substring file pre))))) (message "Munging ...") (switch-to-buffer buf) (erase-buffer) (make-variable-buffer-local 'make-mms-derivative-data) (insert-file file) (make-mms-derivative-load-edits-file edits-filename) (let ((out (make-mms-derivative-data 'write-under-root))) (when out (make-mms-derivative-write-under-root out)) (kill-buffer buf) (unless out (message "Munging ... done"))))))) (provide 'make-mms-derivative) ;;; make-mms-derivative.el ends here