From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.devel Subject: Re: Can't build previous versions of Emacs? Date: Thu, 14 Jul 2022 09:13:26 -0700 Message-ID: <8735f3d655.fsf@ericabrahamsen.net> References: <877d4gcr7g.fsf@ericabrahamsen.net> <87ilo0s70s.fsf@yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="14431"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: emacs-devel@gnu.org Cancel-Lock: sha1:HM+qNA6E5g7bfGlDghRJpqwUv2Q= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Jul 14 18:26:01 2022 Return-path: Envelope-to: ged-emacs-devel@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 1oC1f7-0003Xa-GX for ged-emacs-devel@m.gmane-mx.org; Thu, 14 Jul 2022 18:26:01 +0200 Original-Received: from localhost ([::1]:52884 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oC1f6-0002JY-BX for ged-emacs-devel@m.gmane-mx.org; Thu, 14 Jul 2022 12:26:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60016) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oC1TA-0004W4-LW for emacs-devel@gnu.org; Thu, 14 Jul 2022 12:13:40 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:53936) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oC1T8-00075E-0b for emacs-devel@gnu.org; Thu, 14 Jul 2022 12:13:40 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1oC1T3-0007ay-Ua for emacs-devel@gnu.org; Thu, 14 Jul 2022 18:13:33 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:292157 Archived-At: Po Lu writes: > Eric Abrahamsen writes: > >> Hi all, >> >> I have the Emacs 25, 26 and 27 branches checked out in git worktrees, >> and I was going to build them to test some backwards compatibility. On a >> clean checkout, "make" failed for all three of them with this error: >> >> sysdep.c:1795:22: error: variably modified ‘sigsegv_stack’ at file scope >> 1795 | static unsigned char sigsegv_stack[SIGSTKSZ]; >> | ^~~~~~~~~~~~~ >> make[2]: *** [Makefile:377: sysdep.o] Error 1 >> make[2]: Leaving directory '/home/eric/dev/emacs-26/src' >> make[1]: *** [Makefile:421: src] Error 2 >> make[1]: Leaving directory '/home/eric/dev/emacs-26' >> make: *** [Makefile:1107: bootstrap] Error 2 >> >> This is on Arch Linux, I can send the config.status file for any of the >> branches if that would help. > > That's expected. glibc recently changed in that SIGSTKSZ is now a call > to a function. Emacs wasn't modified to be compatible with that until > 28.1. Thanks! That's good to know.