From patchwork Thu Jul 20 04:57:57 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 9853785 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 240BE60392 for ; Thu, 20 Jul 2017 04:58:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 13C0528737 for ; Thu, 20 Jul 2017 04:58:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 07FAC28747; Thu, 20 Jul 2017 04:58:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=2.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_HI,RCVD_IN_SORBS_SPAM autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 72B3C28737 for ; Thu, 20 Jul 2017 04:58:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932359AbdGTE6F (ORCPT ); Thu, 20 Jul 2017 00:58:05 -0400 Received: from mout.gmx.net ([212.227.17.22]:63371 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750746AbdGTE6E (ORCPT ); Thu, 20 Jul 2017 00:58:04 -0400 Received: from localhost.localdomain ([45.32.39.184]) by mail.gmx.com (mrgmx103 [212.227.17.174]) with ESMTPSA (Nemesis) id 0MTSmp-1d9clx1qAp-00SRO2; Thu, 20 Jul 2017 06:58:03 +0200 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Cc: Qu Wenruo Subject: [PATCH] btrfs-progs: Specify C standard to gnu90 explicitly Date: Thu, 20 Jul 2017 13:57:57 +0900 Message-Id: <20170720045757.18399-1-quwenruo.btrfs@gmx.com> X-Mailer: git-send-email 2.13.3 X-Provags-ID: V03:K0:XB4/iorTXRGad0uAgdVWx2rOksVqmxpHATaRDT2N8Xc6AOFTKon g5PpiPI5GDvn/wWDVBWg7GvRhoAgdStDFcAoOXvRDFaMrxMHFwGfkiwzyqCpEx7/ushf9n8 Hf//qsLRYWXFZwVIMOXvLlEN8PvYX5RGs3YAxcxJ65Y9uFHYrKsm9Z+OxkJEHiwUnPOd8hu Bz7fyLqtx37Votd+5bkhg== X-UI-Out-Filterresults: notjunk:1; V01:K0:rwmPKFGJ9Zk=:/111q2O2rC4Iuv6jN1p1w4 8pS5GJvUrGPeAqRrkv937zQfbkl14rQ18K4LX/PioYqUNw8o+T6sXpPVP5OyZSf9wRPXoNxoV yXS7NtkUoJXHEr7i1J7rLIF+y4fFY1xtAQtd7LNWnY0H1Zv+/iylbr6DlHnAsOOqHLjRHAB7o UwMtnirQwdr0xsh/xYFfvii8pYmygPTNMfjKvOpfnWEiBL6lB40xZgklr8ejtgve2lEkA/NeK uyy57AV/xbhPsPtGi9LC9mob/4W3CP+SVnq5A8u6t9Qw+RhdvFEti2anGelc3hFPUS6ima1u9 j5vBg8uQiBenTdAgGZI7wh3ishGgrv6WsxZG+FFYa5RwYFUJWw8DGPUUJ80Vqel170kBGimqs 9Rgjwg1gHwgDBo7lZVwpw1FK4C20g1UlKa3xHpQ4qEnj0vwMwESs8IJGn7Dw3h27AYMsrKGx+ ZY8PUjpwtZSSI6KA+7hmqYk93FNoPD6D78HtTpae7X/Ba2hTRXFasUBw5E3CDqlB6k+JLDrSe whS4KiYc47TRNwUsh6KkTpUDv3ildNH62aCLe7W/HaeIzLQTa1MOBX9gy3V36B+yePzHz5wlB gBsO7Az7aczS5AG9PdC483OQjZlALNxp+qNv6qU2wa2gbwFU9Z+zeFr54In2aauY5AoKXrFLl nmuDFvkoCjQ2sRN1tDa5IGt3zpdkc16Yy4wuzNT7ho6n5ATCl2ZkpVLkCG5h7gjLL/ibK6fRl MGbjUWLjM8lnaRuYhD7YgFch8KRqd/jf/rTyDzSmz53xPvQMlF7YMRPpGMyZkUAd6KC+bMcJm k5ciu7dFb9/pKLpe6YvFp+kuI0Oww== Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Different C compilers have different default language standard. This sometimes causes problem on different system. For distribution like CentOS/RHEL7, its gcc is still 4.8 and will report error for c90 style declaration, while most developers are using newer gcc which will just ignore it. This makes us hard to detect such language standard problem. This patch will specify standard to gnu90 explicitly to avoid such problem. Gnu90 is a good mix of c90 while provide a lot of useful gnu extension, and is supported by all modern gcc and clang. Reported-by: Marco Lorenzo Crociani Signed-off-by: Qu Wenruo --- Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/Makefile b/Makefile index 81598df1..cb1b3c5f 100644 --- a/Makefile +++ b/Makefile @@ -58,6 +58,7 @@ TOPDIR := $(shell pwd) # Common build flags CFLAGS = $(SUBST_CFLAGS) \ + -std=gnu90 \ -include config.h \ -DBTRFS_FLAT_INCLUDES \ -D_XOPEN_SOURCE=700 \