From fa82955135ef6b93b711ec8c3b4e30c3a75c6fc7 Mon Sep 17 00:00:00 2001
From: Zihao Yu <yuzihao@ict.ac.cn>
Date: Wed, 17 Jan 2024 13:22:42 +0800
Subject: [PATCH] Makefile: prevent other libraries from linking to symbols in
 ELF

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 881d10d..c616a84 100644
--- a/Makefile
+++ b/Makefile
@@ -86,7 +86,7 @@ CFLAGS   += -O2 -MMD -Wall -Werror $(INCFLAGS) \
             -D__PLATFORM__=$(PLATFORM) -D__PLATFORM_$(shell echo $(PLATFORM) | tr a-z A-Z | tr - _) \
             -DARCH_H=\"$(ARCH_H)\" \
             -fno-asynchronous-unwind-tables -fno-builtin -fno-stack-protector \
-            -Wno-main -U_FORTIFY_SOURCE
+            -Wno-main -U_FORTIFY_SOURCE -fvisibility=hidden
 CXXFLAGS +=  $(CFLAGS) -ffreestanding -fno-rtti -fno-exceptions
 ASFLAGS  += -MMD $(INCFLAGS)
 LDFLAGS  += -z noexecstack