From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25558 invoked by alias); 13 Jan 2014 19:45:41 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 25547 invoked by uid 89); 13 Jan 2014 19:45:41 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.0 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 13 Jan 2014 19:45:39 +0000 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s0DJjZnD020112 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 13 Jan 2014 14:45:35 -0500 Received: from barimba (ovpn-113-85.phx2.redhat.com [10.3.113.85]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id s0DJjYoJ016174 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Mon, 13 Jan 2014 14:45:35 -0500 From: Tom Tromey To: Patrick Palka Cc: gdb-patches@sourceware.org Subject: Re: [PATCH] gdb: replace suffix rules with pattern rules References: <1389563743-29311-1-git-send-email-patrick@parcs.ath.cx> Date: Mon, 13 Jan 2014 19:45:00 -0000 In-Reply-To: <1389563743-29311-1-git-send-email-patrick@parcs.ath.cx> (Patrick Palka's message of "Sun, 12 Jan 2014 16:55:43 -0500") Message-ID: <871u0b3btt.fsf@fleche.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SW-Source: 2014-01/txt/msg00366.txt.bz2 >>>>> "Patrick" == Patrick Palka writes: Patrick> Suffix rules (e.g. .c.o:) are error-prone and may not interact Patrick> well with GNU make's -r/--no-builtin-rules flag. Replace them Patrick> with otherwise-equivalent pattern rules (e.g. %.o: %.c). Despite appearances, gdb's use of GNU make features is constrained to parallel check and, if GNU make is available, dependency tracking. That is, in theory you can do a "one-off" build of gdb using some other make. I wouldn't mind requiring GNU make -- gcc has done it for years without adverse effects -- but it isn't currently the case. TBH I am not sure how you'd go about getting this sort of change approved. Patrick> As a result of this change, one can now successfully build gdb/ with Patrick> make's -r flag which improves build time by a bit. There's a zillion other directories to cope with in the tree. Does make -r work in all of them except gdb? If so, how? Tom