From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu Newsgroups: gmane.emacs.devel Subject: Re: Can't build previous versions of Emacs? 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Hermes SMTP Server) with ESMTPA ID 4c86a2d0db79cb2fd31ac9620ee828d8; Thu, 14 Jul 2022 03:33:20 +0000 (UTC) In-Reply-To: <877d4gcr7g.fsf@ericabrahamsen.net> (Eric Abrahamsen's message of "Wed, 13 Jul 2022 20:23:47 -0700") X-Mailer: WebService/1.1.20407 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Received-SPF: pass client-ip=66.163.187.33; envelope-from=luangruo@yahoo.com; helo=sonic308-10.consmr.mail.ne1.yahoo.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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:292124 Archived-At: 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 =E2=80=98sigsegv_stack=E2=80= =99 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.