Core/Common: Move singleton instances into compilation units

* Fixes issues when building shared libraries
  (prevents gcc and clang from providing several instance)

(cherry picked from commit 5c91586797f199259567629a1d4d3f987c73e53c)

1 files changed, 1 insertions, 5 deletions

diff --git a/src/common/Logging/Log.h b/src/common/Logging/Log.h
index a90481ad5d2..6f9c5600775 100644
--- a/src/common/Logging/Log.h
+++ b/src/common/Logging/Log.h
@@ -44,11 +44,7 @@ class Log
 
     public:
 
-        static Log* instance()
-        {
-            static Log instance;
-            return &instance;
-        }
+        static Log* instance();
 
         void Initialize(boost::asio::io_service* ioService);
         void LoadFromConfig();