[dpdk-dev] [PATCH v2] build: use generic march on arm64 when using 'default' machine

[Luca Boccassi <bluca@debian.org>]

When building for generic distribution we need a stable baseline
architecture, or depending on the build worker the result will vary.

Force the default flags if the user explicitly sets machine=default
at configuration time.

Fixes: b1d48c41189a ("build: support ARM with meson")
Cc: stable@dpdk.org

Signed-off-by: Luca Boccassi <bluca@debian.org>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
v2: fix typo in commit message, remove variable used only once

 config/arm/meson.build | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/config/arm/meson.build b/config/arm/meson.build
index dae55d6b2..f15ef6385 100644
--- a/config/arm/meson.build
+++ b/config/arm/meson.build
@@ -105,7 +105,11 @@ else
 	cmd_generic = ['generic', '', '', 'default', '']
 	cmd_output = cmd_generic # Set generic by default
 	machine_args = [] # Clear previous machine args
-	if not meson.is_cross_build()
+	if machine == 'default' and not meson.is_cross_build()
+		machine = impl_generic
+		cmd_output = cmd_generic
+		impl_pn = 'default'
+	elif not meson.is_cross_build()
 		# The script returns ['Implementer', 'Variant', 'Architecture',
 		# 'Primary Part number', 'Revision']
 		detect_vendor = find_program(join_paths(
-- 
2.20.1