From patchwork Thu Jun 13 13:53:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guillaume Tucker X-Patchwork-Id: 10991899 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CBF21112C for ; Thu, 13 Jun 2019 13:54:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B92881FE95 for ; Thu, 13 Jun 2019 13:54:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AC8201FF82; Thu, 13 Jun 2019 13:54:01 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6F7871FE95 for ; Thu, 13 Jun 2019 13:54:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D5F1789A91; Thu, 13 Jun 2019 13:54:00 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id C6E3089A91; Thu, 13 Jun 2019 13:53:59 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: gtucker) with ESMTPSA id 8AEA128A24F From: Guillaume Tucker To: Arkadiusz Hiler , Petri Latvala Date: Thu, 13 Jun 2019 14:53:19 +0100 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH i-g-t v2 1/4] meson: add libatomic dependency X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: igt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Add conditional dependency on libatomic in order to be able to use the __atomic_* functions instead of the older __sync_* ones. The libatomic library is only needed when there aren't any native support on the current architecture, so a linker test is used for this purpose. This enables atomic operations to be on a wider number of architectures including MIPS. Signed-off-by: Guillaume Tucker --- meson.build | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/meson.build b/meson.build index 6268c58d3634..da25a28f3268 100644 --- a/meson.build +++ b/meson.build @@ -179,6 +179,19 @@ math = cc.find_library('m') realtime = cc.find_library('rt') dlsym = cc.find_library('dl') zlib = cc.find_library('z') +if cc.links(''' +#include +int main(void) { + uint32_t x32 = 0; + uint64_t x64 = 0; + __atomic_load_n(&x32, __ATOMIC_SEQ_CST); + __atomic_load_n(&x64, __ATOMIC_SEQ_CST); + return 0; +}''', name : 'built-in atomics') + libatomic = [] +else + libatomic = cc.find_library('atomic') +endif if cc.has_header('linux/kd.h') config.set('HAVE_LINUX_KD_H', 1)