From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 29503A09E4; Fri, 29 Jan 2021 17:48:54 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 56DD640696; Fri, 29 Jan 2021 17:48:42 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by mails.dpdk.org (Postfix) with ESMTP id 5B18C4068C; Fri, 29 Jan 2021 17:48:36 +0100 (CET) IronPort-SDR: QUgC1FMs/qsxecJtfhNlWJLDEkNlafpK/H3NB47pcsuIhwOfhH3wsFIwtQpZCHq8geMW1lYIQq M+VGk0G4pNlA== X-IronPort-AV: E=McAfee;i="6000,8403,9879"; a="179671264" X-IronPort-AV: E=Sophos;i="5.79,386,1602572400"; d="scan'208";a="179671264" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jan 2021 08:48:35 -0800 IronPort-SDR: G7bQRLykbyFAlbLFKYfGGCBLUA7dRxVISRkkwhwm4Uqcwpl+oNGTRhBPHbrM1UH2snBMT682VZ vbu0f5h3yryw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,386,1602572400"; d="scan'208";a="370431288" Received: from silpixa00399126.ir.intel.com ([10.237.222.4]) by orsmga002.jf.intel.com with ESMTP; 29 Jan 2021 08:48:34 -0800 From: Bruce Richardson To: dev@dpdk.org Cc: david.marchand@redhat.com, Bruce Richardson , stable@dpdk.org, Ray Kinsella , Neil Horman , Haiyue Wang Date: Fri, 29 Jan 2021 16:48:16 +0000 Message-Id: <20210129164823.3205861-3-bruce.richardson@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210129164823.3205861-1-bruce.richardson@intel.com> References: <20210114110606.21142-1-bruce.richardson@intel.com> <20210129164823.3205861-1-bruce.richardson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v7 02/10] eal: fix error attribute use for clang X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Clang does not have an "error" attribute for functions, so for marking internal functions we need to check for the error attribute, and provide a fallback if it is not present. For clang, we can use "diagnose_if" attribute, similarly checking for its presence before use. Fixes: fba5af82adc8 ("eal: add internal ABI tag definition") Cc: stable@dpdk.org Signed-off-by: Bruce Richardson --- lib/librte_eal/include/rte_compat.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/lib/librte_eal/include/rte_compat.h b/lib/librte_eal/include/rte_compat.h index 4cd8f68d68..2718612cce 100644 --- a/lib/librte_eal/include/rte_compat.h +++ b/lib/librte_eal/include/rte_compat.h @@ -19,12 +19,23 @@ __attribute__((section(".text.experimental"))) #endif -#ifndef ALLOW_INTERNAL_API +#ifndef __has_attribute +/* if no has_attribute assume no support for attribute too */ +#define __has_attribute(x) 0 +#endif + +#if !defined ALLOW_INTERNAL_API && __has_attribute(error) /* For GCC */ #define __rte_internal \ __attribute__((error("Symbol is not public ABI"), \ section(".text.internal"))) +#elif !defined ALLOW_INTERNAL_API && __has_attribute(diagnose_if) /* For clang */ + +#define __rte_internal \ +__attribute__((diagnose_if(1, "Symbol is not public ABI", "error"), \ +section(".text.internal"))) + #else #define __rte_internal \ -- 2.27.0