From 5e93939f6d8a74efeb0db65be31c9ebbf7920647 Mon Sep 17 00:00:00 2001
From: Giuliano Procida <gprocida@google.com>
Date: Fri, 12 Mar 2021 09:19:08 +0000
Subject: [PATCH] ANDROID: Clang LTO: Only set -fvisibility=hidden for x86

Otherwise this upsets ABI monitoring as symbols are hidden and as such
do not get considered for ABI analysis.

Bug: 182194803
Bug: 203411090
Fixes: dc5723b02e52 ("kbuild: add support for Clang LTO")
Signed-off-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
Change-Id: If6011ad739ecccd23a92cfa2f9fd43084f9a0b4f
---
 Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Makefile b/Makefile
index c67f16fdad8d..addc04d73bcc 100644
--- a/Makefile
+++ b/Makefile
@@ -952,7 +952,13 @@ KBUILD_LDFLAGS	+= --thinlto-cache-dir=$(extmod_prefix).thinlto-cache
 else
 CC_FLAGS_LTO	:= -flto
 endif
+
+ifeq ($(SRCARCH),x86)
+# Workaround for compiler / linker bug
 CC_FLAGS_LTO	+= -fvisibility=hidden
+else
+CC_FLAGS_LTO	+= -fvisibility=default
+endif
 
 # Limit inlining across translation units to reduce binary size
 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5