From 984c23c52b7bc650c2c7f211a5e503aba7318417 Mon Sep 17 00:00:00 2001
From: Xiaotian Wu <wuxiaotian@loongson.cn>
Date: Wed, 16 Mar 2022 12:49:35 +0800
Subject: [PATCH] fix build error

---
 deps/oblib/src/lib/charset/ob_charset.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/deps/oblib/src/lib/charset/ob_charset.cpp b/deps/oblib/src/lib/charset/ob_charset.cpp
index c604e776d..de80e417e 100644
--- a/deps/oblib/src/lib/charset/ob_charset.cpp
+++ b/deps/oblib/src/lib/charset/ob_charset.cpp
@@ -11,6 +11,7 @@
  */
 
 #define USING_LOG_PREFIX LIB_CHARSET
+#include <math.h>
 #include "lib/charset/ob_charset.h"
 #include "lib/utility/serialization.h"
 #include "lib/ob_define.h"