Re: [PATCH] member: use common top-level variable for easier maintenance

[Andre Muezerie <andremue@linux.microsoft.com>]

On Mon, Mar 03, 2025 at 03:21:40PM +0000, Bruce Richardson wrote:
> On Fri, Feb 28, 2025 at 11:01:01AM -0800, Andre Muezerie wrote:
> > Updated meson.build to use common variable cc_avx512_flags for
> > msvc and avoiding code duplication for other compilers.
> > 
> > Signed-off-by: Andre Muezerie <andremue@linux.microsoft.com>
> > ---
> >  lib/member/meson.build | 11 ++++++++---
> >  1 file changed, 8 insertions(+), 3 deletions(-)
> > 
> > diff --git a/lib/member/meson.build b/lib/member/meson.build
> > index f92cbb7f25..8416dc6f8a 100644
> > --- a/lib/member/meson.build
> > +++ b/lib/member/meson.build
> > @@ -33,6 +33,12 @@ if dpdk_conf.has('RTE_ARCH_X86_64') and binutils_ok
> >      # compiler flags, and then have the .o file from static lib
> >      # linked into main lib.
> >  
> > +    if is_ms_compiler
> > +        member_avx512_args = cc_avx512_flags
> > +    else
> > +        member_avx512_args = ['-mavx512f', '-mavx512dq', '-mavx512ifma']
> > +    endif
> > +
> 
> Would this be better as:
> 
> member_avx512_args = cc_avx512_flags
> if not is_ms_compiler
> 	member_avx512_args += '-mavx512ifma'
> endif
> 
> WDYT?

That is slightly simpler. I updated the patch accordingly.

> 
> >      # check if all required flags already enabled
> >      sketch_avx512_flags = ['__AVX512F__', '__AVX512DQ__', '__AVX512IFMA__']
> >  
> > @@ -46,13 +52,12 @@ if dpdk_conf.has('RTE_ARCH_X86_64') and binutils_ok
> >      if sketch_avx512_on == true
> >          cflags += ['-DCC_AVX512_SUPPORT']
> >          sources += files('rte_member_sketch_avx512.c')
> > -    elif cc.has_multi_arguments('-mavx512f', '-mavx512dq', '-mavx512ifma')
> > +    elif cc.has_multi_arguments(member_avx512_args)
> >          sketch_avx512_tmp = static_library('sketch_avx512_tmp',
> >              'rte_member_sketch_avx512.c',
> >              include_directories: includes,
> >              dependencies: [static_rte_eal, static_rte_hash],
> > -            c_args: cflags +
> > -                ['-mavx512f', '-mavx512dq', '-mavx512ifma'])
> > +            c_args: cflags + member_avx512_args)
> >          objs += sketch_avx512_tmp.extract_objects('rte_member_sketch_avx512.c')
> >          cflags += ['-DCC_AVX512_SUPPORT']
> >      endif
> > -- 
> > 2.48.1.vfs.0.0
> >