From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#50666: 28.0.50; Fix native compilation on Cygwin Date: Thu, 23 Sep 2021 20:29:20 +0300 Message-ID: <837df7urnz.fsf@gnu.org> References: <9f20194e-b1ba-9417-4f18-caa1d80b5568@cornell.edu> <01a89ba6-2786-df04-0181-069b50a70331@cornell.edu> <835yux5dn1.fsf@gnu.org> <87bl4pf3s1.fsf@Otto.invalid> <83tuih3uvr.fsf@gnu.org> <877dfcg5tu.fsf@Otto.invalid> <83pmt44vn1.fsf@gnu.org> <83mto84r9l.fsf@gnu.org> <83fsu04mai.fsf@gnu.org> <1a5e01a2-2247-2f68-82f6-2075577e02b6@cornell.edu> <837dfc4hi1.fsf@gnu.org> <4ae8067f-55b2-d243-66f3-f76493095a39@cornell.edu> <83o88jvity.fsf@gnu.org> <8e8e74ce-0deb-bcdc-d298-be2e9d4636d7@cornell.edu> <83bl4juu2c.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="823"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Stromeko@nexgo.de, 50666@debbugs.gnu.org, akrl@sdf.org To: Ken Brown Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Sep 23 19:34:26 2021 Return-path: Envelope-to: geb-bug-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 1mTSc6-000AYl-4l for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 23 Sep 2021 19:34:26 +0200 Original-Received: from localhost ([::1]:38662 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mTSc5-0001LZ-7p for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 23 Sep 2021 13:34:25 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46732) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mTSXq-0004G0-A5 for bug-gnu-emacs@gnu.org; Thu, 23 Sep 2021 13:30:05 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:44233) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mTSXq-0004Xe-1Z for bug-gnu-emacs@gnu.org; Thu, 23 Sep 2021 13:30:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mTSXp-0008Mf-TS for bug-gnu-emacs@gnu.org; Thu, 23 Sep 2021 13:30:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 23 Sep 2021 17:30:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 50666 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 50666-submit@debbugs.gnu.org id=B50666.163241817932098 (code B ref 50666); Thu, 23 Sep 2021 17:30:01 +0000 Original-Received: (at 50666) by debbugs.gnu.org; 23 Sep 2021 17:29:39 +0000 Original-Received: from localhost ([127.0.0.1]:55779 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mTSXS-0008Le-PG for submit@debbugs.gnu.org; Thu, 23 Sep 2021 13:29:39 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:57798) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mTSXN-0008LM-Oe for 50666@debbugs.gnu.org; Thu, 23 Sep 2021 13:29:37 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:53222) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mTSXH-00043T-0V; Thu, 23 Sep 2021 13:29:27 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:2527 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mTSXG-0001YC-KK; Thu, 23 Sep 2021 13:29:26 -0400 In-Reply-To: (message from Ken Brown on Thu, 23 Sep 2021 13:13:05 -0400) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:215209 Archived-At: > Cc: akrl@sdf.org, Stromeko@nexgo.de, 50666@debbugs.gnu.org > From: Ken Brown > Date: Thu, 23 Sep 2021 13:13:05 -0400 > > > My point is that maybe we should make that decision already, before > > burning too much time and energy on it. > > You might be right. I wasn't aware of all the complications you mentioned above. It took us most of the last year to realize how tricky this stuff is. We are still learning ;-) > We still need to do something for 64-bit Cygwin. Even though address collisions > are unlikely they could still happen theoretically. But there might be a much > easier solution that doesn't necessarily require rebasing. For example, Achim > mentioned earlier the possibility of marking the eln as ASLR w/ high-entropy and > large address aware. Isn't that the default of the 64-bit GNU ld on Windows? Or does Cygwin configure Binutils differently from MinGW? If not, we can use native-comp-driver-options, by giving it a non-nil value for Cygwin, to force this.