From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [PATCH] mk: fix scope of disabling AVX512F support
Date: Wed, 19 Dec 2018 20:58:26 +0100
Message-ID: <1772993.ZpFq8iN2Ki@xps>
References: <20181219192904.61934-1-ferruh.yigit@intel.com>
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Cc: dev@dpdk.org, stable@dpdk.org, Tom Barbette <barbette@kth.se>,
 Yongseok Koh <yskoh@mellanox.com>,
 Konstantin Ananyev <konstantin.ananyev@intel.com>,
 Bruce Richardson <bruce.richardson@intel.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
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19/12/2018 20:29, Ferruh Yigit:
> 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.
[...]
>  # 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

I think we should print a warning here.
There is a function $(warning) or $(info) for such case.