From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Bruno Haible Newsgroups: gmane.emacs.bugs Subject: bug#65319: compilation error on Android (Termux) Date: Tue, 15 Aug 2023 22:28:25 +0200 Message-ID: <7932888.4pN7iFggcO@nimes> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6443"; mail-complaints-to="usenet@ciao.gmane.io" To: 65319@debbugs.gnu.org, luangruo@yahoo.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Aug 15 22:29:22 2023 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 1qW0fJ-0001SN-6g for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 15 Aug 2023 22:29:21 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qW0f3-0003pz-1l; 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Tue, 15 Aug 2023 22:28:25 +0200 (CEST) Received-SPF: none client-ip=85.215.255.24; envelope-from=bruno@clisp.org; helo=mo4-p00-ob.smtp.rzone.de 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:267519 Archived-At: Hi, Compiling a current Emacs checkout from today on Android, inside the Termux app, produces a compilation error: ../../src/dired.c:1140:16: warning: call to undeclared function 'getpwent'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] while ((pw = getpwent ())) ^ ../../src/dired.c:1140:14: error: incompatible integer to pointer conversion assigning to 'struct passwd *' from 'int' [-Wint-conversion] while ((pw = getpwent ())) ^ ~~~~~~~~~~~ The reason is that the default Android API level in Termux is 24, the Android declares getpwent() only starting with API level 26: #if __ANDROID_API__ >= 26 struct passwd* getpwent(void) __INTRODUCED_IN(26); ... yet HAVE_GETPWENT and HAVE_ENDPWENT come out as 1. I can see two possible fixes: a) use gl_CHECK_FUNCS_ANDROID([getpwent], [[#include ]]) instead of AC_CHECK_FUNCS(... getpwent ...) in configure.ac, b) add AC_CHECK_DECLS([getpwent], [], [], [[ #include #include ]]) to configure.ac, and a '&& HAVE_DECL_GETPWENT' in src/dired.c line 1137. Bruno