From 394407f50c90ca3ce4b882aefb9e26eae4ba6bca Mon Sep 17 00:00:00 2001 From: David Christensen Date: Thu, 2 Sep 2021 16:53:26 -0700 Subject: [PATCH] config/ppc: ignore GCC 11 psabi warnings Suppress the gcc warning "note: the layout of aggregates containing vectors with 4-byte alignment has changed in GCC 5" on POWER systems by setting "-Wno-psabi". Warning was originally added to gcc in commit https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=9832651 to warn of the vector alignment changes introduced in GCC 5. Older gcc versions forced vector alignment to 16 bytes due to requirements for POWER 6 and earlier CPUs, but these restrictions don't apply to CPUs supported by DPDK. Bugzilla ID: 739 Cc: stable@dpdk.org Signed-off-by: David Christensen --- config/ppc/meson.build | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/config/ppc/meson.build b/config/ppc/meson.build index adf49e1f42..0b1948fc7c 100644 --- a/config/ppc/meson.build +++ b/config/ppc/meson.build @@ -1,5 +1,6 @@ # SPDX-License-Identifier: BSD-3-Clause # Copyright(c) 2018 Luca Boccassi +# Copyright(c) 2021 IBM Corporation if not dpdk_conf.get('RTE_ARCH_64') error('Only 64-bit compiles are supported for this platform type') @@ -17,6 +18,13 @@ if not power9_supported dpdk_conf.set('RTE_MACHINE','power8') endif +# Suppress the gcc warning "note: the layout of aggregates containing +# vectors with 4-byte alignment has changed in GCC 5". +if cc.get_id() == 'gcc' and cc.version().version_compare('>=10.0') and + cc.version().version_compare('<12.0') and cc.has_argument('-Wno-psabi') + add_project_arguments('-Wno-psabi', language: 'c') +endif + # Certain POWER9 systems can scale as high as 1536 LCORES, but setting such a # high value can waste memory, cause timeouts in time limited autotests, and is # unlikely to be used in many production situations. Similarly, keeping the -- 2.20.1