From 42040ed753b7dc346737a580eb03da4b5e1e860d Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@gmail.com>
Date: Thu, 31 Jul 2014 18:43:43 +0000
Subject: [PATCH] Create a default symver on Linux like ELF OSes.

Patch by Adam Jackson.

llvm-svn: 214418
---
 llvm/tools/llvm-shlib/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/llvm/tools/llvm-shlib/Makefile b/llvm/tools/llvm-shlib/Makefile
index 19077a3858a6..4e656b438c3d 100644
--- a/llvm/tools/llvm-shlib/Makefile
+++ b/llvm/tools/llvm-shlib/Makefile
@@ -69,6 +69,11 @@ ifeq ($(HOST_OS), $(filter $(HOST_OS), Linux GNU GNU/kFreeBSD))
     LLVMLibsOptions += -Wl,--no-undefined
 endif
 
+ifeq ($(HOST_OS), $(filter $(HOST_OS), Linux GNU GNU/kFreeBSD))
+    # Define a default symbol version
+    LLVMLibsOptions += -Wl,--default-symver
+endif
+
 ifeq ($(HOST_OS),SunOS)
     # add -z allextract ahead of other libraries on Solaris
     LLVMLibsOptions := -Wl,-z -Wl,allextract $(LLVMLibsOptions)