[dpdk-dev] [PATCH] meson: fix compilation with binutils version 2.30

[Ferruh Yigit]

On 1/17/2019 5:17 PM, Harry van Haaren wrote:
> This commit reworks the checks for binutils 2.30 and how
> the flags to disable AVX512F are passed to the compiler.
> 
> Previously the #define for including AVX512 code was set,
> while the -mno-avx512f argument was given to the compiler.
> This would cause gcc to correctly refuse to emit AVX512
> instructions, but the rte_memcpy code that includes AVX512
> optimizations was being added to the build.
> 
> The check for binutils check is now moved to x86 as it is
> irrelevant for other architectures, and the -mno-avx512f
> flag is passed to a march_opts array in meson. As the
> -mno-avx512 flag is added earlier in the build, the code
> in rte_memcpy is no longer attempted to be compiled.
> 
> This commit also adds a message print in the meson configure
> stage to alert the user of the workaround being employed.
> 
> Fixes: a32ca9a4ebc1 ("mk: fix scope of disabling AVX512F support")
> 
> Signed-off-by: Harry van Haaren <harry.van.haaren at intel.com>

Tested-by: Ferruh Yigit <ferruh.yigit at intel.com>

Thanks for the fix Harry.