commit f18217902a4c84c2cb6695164ffa1db540a0146b
author Alexei Fedorov <Alexei.Fedorov@arm.com> Mon Dec 07 16:38:53 2020 +0000
committer Alexei Fedorov <Alexei.Fedorov@arm.com> Thu Dec 10 15:31:51 2020 +0000
tree 44dd1c041c1b75d0022832bc4393a5ab8f268e1e
parent 2736aca5972d66f4a36267dbb458b3730e95e40e

TF-A: Add build option for Arm Feature Modifiers

This patch adds a new ARM_ARCH_FEATURE build option
to add support for compiler's feature modifiers.
It has the form '[no]feature+...' and defaults to
'none'. This option translates into compiler option
'-march=armvX[.Y]-a+[no]feature+...'.

Change-Id: I37742f270a898f5d6968e146cbcc04cbf53ef2ad
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>

make_helpers/defaults.mk

diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index 578bd59..9e5fe85 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -19,6 +19,9 @@
 # The Target build architecture. Supported values are: aarch64, aarch32.
 ARCH				:= aarch64
 
+# ARM Architecture feature modifiers: none by default
+ARM_ARCH_FEATURE		:= none
+
 # ARM Architecture major and minor versions: 8.0 by default.
 ARM_ARCH_MAJOR			:= 8
 ARM_ARCH_MINOR			:= 0