json_tool missing include
diff --git a/src/lib_json/json_tool.h b/src/lib_json/json_tool.h
index f02537b..d5f6d2f 100644
--- a/src/lib_json/json_tool.h
+++ b/src/lib_json/json_tool.h
@@ -6,6 +6,7 @@
#ifndef LIB_JSONCPP_JSON_TOOL_H_INCLUDED
#define LIB_JSONCPP_JSON_TOOL_H_INCLUDED
+#include <json/config.h>
// Also support old flag NO_LOCALE_SUPPORT
#ifdef NO_LOCALE_SUPPORT
@@ -23,7 +24,7 @@
*/
namespace Json {
-static char getDecimalPoint() {
+static inline char getDecimalPoint() {
#ifdef JSONCPP_NO_LOCALE_SUPPORT
return '\0';
#else