From b3dc2f3691528c52587452847590d0477cdb017d Mon Sep 17 00:00:00 2001
From: Peter Dillinger <peterd@fb.com>
Date: Fri, 25 Oct 2019 12:53:11 -0700
Subject: [PATCH] Update xxhash.cc to allow combined compilation (#5969)

Summary:
To fix unity_test
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5969

Test Plan: make unity_test

Differential Revision: D18140426

Pulled By: pdillinger

fbshipit-source-id: d5516e6d665f57e3706b9f9b965b0c458e58ccef
---
 util/xxhash.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/util/xxhash.cc b/util/xxhash.cc
index b35473e1a..1cae65a28 100644
--- a/util/xxhash.cc
+++ b/util/xxhash.cc
@@ -119,7 +119,10 @@ static void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcp
 
 #include <limits.h>   /* ULLONG_MAX */
 
+#ifndef XXH_STATIC_LINKING_ONLY
 #define XXH_STATIC_LINKING_ONLY
+#endif
+
 #include "xxhash.h"
 
 /* BEGIN RocksDB customizations */