From 67c0c971e092912c2016fe83b9b5f0f23f51e527 Mon Sep 17 00:00:00 2001
From: GUO Zihua <scott.guo@outlook.com>
Date: Thu, 8 Sep 2022 10:25:50 +0800
Subject: [PATCH] lto: Optimize build performance for CI

ohos inclusion
category: feature
feature: Build Optimization
issue: I5Q9JV
CVE: NA

Signed-off-by: GUO Zihua <guozihua@huawei.com>
--------------------------------

Optimize build performance while duing CI build by disabling LTO
optimization.

Signed-off-by: GUO Zihua <scott.guo@outlook.com>
Change-Id: I1b0e7287851931e819dc852e3e3494cedae177cc
---
 Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile b/Makefile
index 35ca90776a9f..679a1b1ceb61 100644
--- a/Makefile
+++ b/Makefile
@@ -902,6 +902,9 @@ ifdef CONFIG_LTO_CLANG
 ifdef CONFIG_LTO_CLANG_THIN
 CC_FLAGS_LTO	:= -flto=thin -fsplit-lto-unit
 KBUILD_LDFLAGS	+= --thinlto-cache-dir=$(extmod-prefix).thinlto-cache
+ifeq ($(KERNEL_LTO_USE_O0),y)
+KBUILD_LDFLAGS	+= --lto-O0
+endif
 else
 CC_FLAGS_LTO	:= -flto
 endif
-- 
Gitee