From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 6483E1B555; Wed, 19 Dec 2018 20:29:10 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Dec 2018 11:29:09 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,373,1539673200"; d="scan'208";a="285079748" Received: from silpixa00399752.ir.intel.com (HELO silpixa00399752.ger.corp.intel.com) ([10.237.222.212]) by orsmga005.jf.intel.com with ESMTP; 19 Dec 2018 11:29:07 -0800 From: Ferruh Yigit To: dev@dpdk.org, Thomas Monjalon Cc: Ferruh Yigit , stable@dpdk.org, Tom Barbette , Yongseok Koh , Konstantin Ananyev , Bruce Richardson Date: Wed, 19 Dec 2018 19:29:04 +0000 Message-Id: <20181219192904.61934-1-ferruh.yigit@intel.com> X-Mailer: git-send-email 2.17.2 Subject: [dpdk-stable] [PATCH] mk: fix scope of disabling AVX512F support X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Dec 2018 19:29:11 -0000 AVX512 was disabled for GCC because of Bugzilla issue 97 [1], the GCC defect submitted for the issue [2] highlighted that this is a known binutils version 2.30 issue. Narrowed the scope of no-avx512 to the this specific binutils version. [1] https://bugs.dpdk.org/show_bug.cgi?id=97 [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88096 Fixes: 8d07c82b239f ("mk: disable gcc AVX512F support") Cc: stable@dpdk.org Signed-off-by: Ferruh Yigit --- Cc: Tom Barbette Cc: Thomas Monjalon Cc: Yongseok Koh Cc: Konstantin Ananyev Cc: Bruce Richardson We need similar check for meson which is missing right now. --- mk/rte.cpuflags.mk | 2 ++ mk/toolchain/gcc/rte.toolchain-compat.mk | 2 ++ 2 files changed, 4 insertions(+) diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk index c3291b17a..5e52e580d 100644 --- a/mk/rte.cpuflags.mk +++ b/mk/rte.cpuflags.mk @@ -71,10 +71,12 @@ CPUFLAGS += AVX512F else # disable AVX512F support of gcc as a workaround for Bug 97 ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) +ifneq ($(filter 2.30%,$(LD_VERSION)),) MACHINE_CFLAGS += -mno-avx512f endif endif endif +endif # IBM Power CPU flags ifneq ($(filter $(AUTO_CPUFLAGS),__PPC64__),) diff --git a/mk/toolchain/gcc/rte.toolchain-compat.mk b/mk/toolchain/gcc/rte.toolchain-compat.mk index 44904295c..2690aeb4d 100644 --- a/mk/toolchain/gcc/rte.toolchain-compat.mk +++ b/mk/toolchain/gcc/rte.toolchain-compat.mk @@ -20,6 +20,8 @@ HOST_GCC_MINOR = $(shell echo __GNUC_MINOR__ | $(HOSTCC) -E -x c - | tail -n 1) HOST_GCC_PATCHLEVEL = $(shell echo __GNUC_PATCHLEVEL__ | $(HOSTCC) -E -x c - | tail -n 1) HOST_GCC_VERSION = $(HOST_GCC_MAJOR)$(HOST_GCC_MINOR) +LD_VERSION = $(shell ld -v) + # if GCC is older than 4.x ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1) MACHINE_CFLAGS = -- 2.17.2