[dpdk-dev] [PATCH 1/2] build: fix meson binutils workaround

[Ferruh Yigit]

The '-mno-avx512f' compiler flag is not passed to the compiler,
detection of the binutils and setting flags works fine, but the flag
itself not used by compiler.

Removing the interim 'march_opt' variable and using directly
'machine_args' and setting '-mno-avx512f' to 'machine_args'

Fixes: 566b4d7a968f ("build: fix meson check for binutils 2.30")
Cc: stable at dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
Cc: harry.van.haaren at intel.com
---
 config/x86/meson.build | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/config/x86/meson.build b/config/x86/meson.build
index 558edfda9..692aebe7a 100644
--- a/config/x86/meson.build
+++ b/config/x86/meson.build
@@ -1,15 +1,12 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2017-2019 Intel Corporation
 
-# for checking defines we need to use the correct compiler flags
-march_opt = ['-march=@0@'.format(machine)]
-
 # get binutils version for the workaround of Bug 97
 if host_machine.system() != 'windows'
 	ldver = run_command('ld', '-v').stdout().strip()
 	if ldver.contains('2.30')
 		if cc.has_argument('-mno-avx512f')
-			march_opt += '-mno-avx512f'
+			machine_args += '-mno-avx512f'
 			message('Binutils 2.30 detected, disabling AVX512 support as workaround for bug #97')
 		endif
 	endif
@@ -19,7 +16,7 @@ endif
 sse_errormsg = '''SSE4.2 instruction set is required for DPDK.
 Please set the machine type to "nehalem" or "corei7" or higher value'''
 
-if cc.get_define('__SSE4_2__', args: march_opt) == ''
+if cc.get_define('__SSE4_2__', args: machine_args) == ''
 	error(sse_errormsg)
 endif
 
@@ -38,23 +35,23 @@ else
 	dpdk_conf.set('RTE_ARCH', 'i686')
 endif
 
-if cc.get_define('__AES__', args: march_opt) != ''
+if cc.get_define('__AES__', args: machine_args) != ''
 	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AES', 1)
 	compile_time_cpuflags += ['RTE_CPUFLAG_AES']
 endif
-if cc.get_define('__PCLMUL__', args: march_opt) != ''
+if cc.get_define('__PCLMUL__', args: machine_args) != ''
 	dpdk_conf.set('RTE_MACHINE_CPUFLAG_PCLMULQDQ', 1)
 	compile_time_cpuflags += ['RTE_CPUFLAG_PCLMULQDQ']
 endif
-if cc.get_define('__AVX__', args: march_opt) != ''
+if cc.get_define('__AVX__', args: machine_args) != ''
 	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AVX', 1)
 	compile_time_cpuflags += ['RTE_CPUFLAG_AVX']
 endif
-if cc.get_define('__AVX2__', args: march_opt) != ''
+if cc.get_define('__AVX2__', args: machine_args) != ''
 	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AVX2', 1)
 	compile_time_cpuflags += ['RTE_CPUFLAG_AVX2']
 endif
-if cc.get_define('__AVX512F__', args: march_opt) != ''
+if cc.get_define('__AVX512F__', args: machine_args) != ''
 	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AVX512F', 1)
 	compile_time_cpuflags += ['RTE_CPUFLAG_AVX512F']
 endif
-- 
2.20.1