buildroot/package/bdwgc/0001-Fix-undefined-reference-to-__data_start-linker-error.patch

From 301ef15aefa6764466c374d07efb511b1c3862cc Mon Sep 17 00:00:00 2001
From: Nikita Ermakov <coffe92@gmail.com>
Date: Wed, 20 May 2020 17:57:17 +0300
Subject: [PATCH] Fix 'undefined reference to __data_start' linker error on
 RISC-V

Issue #294 (bdwgc).

* include/private/gcconfig.h [RISCV && LINUX] (__data_start): Add
attribute(weak).

(cherry picked from commit 538562ad01b181f4cc3913da1ac06a77945cd9b9)
Signed-off-by: Romain Naour <romain.naour@gmail.com>
---
 include/private/gcconfig.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index d9d45da1..d6cefa6f 100644
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -2943,7 +2943,7 @@ EXTERN_C_BEGIN
 #   define ALIGNMENT (CPP_WORDSZ/8)
 #   ifdef LINUX
 #     define OS_TYPE "LINUX"
-      extern int __data_start[];
+      extern int __data_start[] __attribute__((__weak__));
 #     define DATASTART ((ptr_t)__data_start)
 #     define LINUX_STACKBOTTOM
 #     define DYNAMIC_LOADING
-- 
2.30.2