From 0c05edfddb290249b732449a83efa80ae8e23a30 Mon Sep 17 00:00:00 2001
From: JinHai-CN <hai.jin@zilliz.com>
Date: Sun, 6 Oct 2019 14:46:03 +0800
Subject: [PATCH] MS-595 Fix compiling error on gcc 7.4

Former-commit-id: 4f602467afe2e6e859c3d7772a6136a6ee5d0fcf
---
 cpp/src/server/DBWrapper.cpp     | 1 +
 cpp/src/utils/ValidationUtil.cpp | 1 +
 cpp/src/wrapper/ConfAdapterMgr.h | 1 +
 3 files changed, 3 insertions(+)

diff --git a/cpp/src/server/DBWrapper.cpp b/cpp/src/server/DBWrapper.cpp
index 66104bfe5a..73b11f034d 100644
--- a/cpp/src/server/DBWrapper.cpp
+++ b/cpp/src/server/DBWrapper.cpp
@@ -26,6 +26,7 @@
 #include <string>
 #include <omp.h>
 #include <faiss/utils.h>
+#include <cmath>
 
 namespace zilliz {
 namespace milvus {
diff --git a/cpp/src/utils/ValidationUtil.cpp b/cpp/src/utils/ValidationUtil.cpp
index a6d83af1dc..8d85c64d31 100644
--- a/cpp/src/utils/ValidationUtil.cpp
+++ b/cpp/src/utils/ValidationUtil.cpp
@@ -25,6 +25,7 @@
 #include <arpa/inet.h>
 #include <regex>
 #include <algorithm>
+#include <cmath>
 
 namespace zilliz {
 namespace milvus {
diff --git a/cpp/src/wrapper/ConfAdapterMgr.h b/cpp/src/wrapper/ConfAdapterMgr.h
index fe8b4f07fa..3e68a3df26 100644
--- a/cpp/src/wrapper/ConfAdapterMgr.h
+++ b/cpp/src/wrapper/ConfAdapterMgr.h
@@ -21,6 +21,7 @@
 #include "VecIndex.h"
 #include "ConfAdapter.h"
 
+#include <functional>
 
 namespace zilliz {
 namespace milvus {