From fa7dc84396c7bf05257d82cd641a58c074136223 Mon Sep 17 00:00:00 2001
From: Pablo Tello <pablo.tello@arm.com>
Date: Thu, 25 Jan 2018 10:48:46 +0000
Subject: COMPMID-765: Enable fp16 extension for arm64-v8.2-a

Explicitly add -march=armv8.2-a+fp16 for target arm64-v8.2-a, otherwise __ARM_FEATURE_FP16_VECTOR_ARITHMETIC is undefined
and all the FP16 neon code is not compiled.

Change-Id: I698819d842de996c1b4c88ebd0cf8664c5f70d58
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/117601
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
---
 SConstruct | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'SConstruct')

diff --git a/SConstruct b/SConstruct
index 76a5bd00b1..7f06a37dbf 100644
--- a/SConstruct
+++ b/SConstruct
@@ -136,8 +136,8 @@ elif env['arch'] == 'arm64-v8a':
     elif env['os'] == 'android':
         prefix = "aarch64-linux-android-"
 elif env['arch'] == 'arm64-v8.2-a':
+    env.Append(CXXFLAGS = ['-march=armv8.2-a+fp16']) # explicitly enable fp16 extension otherwise __ARM_FEATURE_FP16_VECTOR_ARITHMETIC is undefined
     env.Append(CPPDEFINES = ['ARM_COMPUTE_AARCH64_V8_2'])
-
     if cpp_compiler == 'clang++':
         env.Append(CXXFLAGS = ['-fno-integrated-as'])
 
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