| From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
| From: Giuliano Procida <gprocida@google.com> |
| Date: Fri, 12 Mar 2021 09:19:08 +0000 |
| Subject: 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 |
| --- a/Makefile |
| +++ b/Makefile |
| @@ -900,7 +900,13 @@ 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 |
