[dpdk-dev] [PATCH v3 4/8] fib: introduce AVX512 lookup

[Thomas Monjalon]

19/05/2020 14:12, Vladimir Medvedkin:
> --- a/lib/librte_fib/meson.build
> +++ b/lib/librte_fib/meson.build
> +if dpdk_conf.has('RTE_ARCH_X86') and cc.has_argument('-mavx512f')
> +	if cc.has_argument('-mavx512dq')
> +		dir24_8_avx512_tmp = static_library('dir24_8_avx512_tmp',
> +			'dir24_8_avx512.c',
> +			dependencies: static_rte_eal,
> +			c_args: cflags + ['-mavx512f'] + ['-mavx512dq'])
> +		objs += dir24_8_avx512_tmp.extract_objects('dir24_8_avx512.c')
> +		cflags += '-DCC_DIR24_8_AVX512_SUPPORT'
> +	endif
> +endif

I don't want to try understanding what this hack is.
But please add comments around it, so we will understand why
compilation fails:

In file included from ../../dpdk/lib/librte_fib/dir24_8_avx512.c:5:
../../dpdk/lib/librte_eal/x86/include/rte_vect.h:97:18: error: expected declaration specifiers or ‘...’ before ‘(’ token
   97 | #define ZMM_SIZE (sizeof(__x86_zmm_t))
      |                  ^