diff --git a/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.cpp b/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.cpp
index f4d7341f8..0fd4ef46b 100644
--- a/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.cpp
+++ b/src/BulletCollision/BroadphaseCollision/btBroadphaseProxy.cpp
@@ -15,3 +15,4 @@ subject to the following restrictions:
 
 #include "btBroadphaseProxy.h"
 
+BT_NOT_EMPTY_FILE // fix warning LNK4221: This object file does not define any previously undefined public symbols, so it will not be used by any link operation that consumes this library
diff --git a/src/LinearMath/btScalar.h b/src/LinearMath/btScalar.h
index 054652255..2f5253837 100644
--- a/src/LinearMath/btScalar.h
+++ b/src/LinearMath/btScalar.h
@@ -32,6 +32,28 @@ inline int btGetVersion()
 	return BT_BULLET_VERSION;
 }
 
+
+// The following macro "BT_NOT_EMPTY_FILE" can be put into a file
+// in order suppress the MS Visual C++ Linker warning 4221
+//
+// warning LNK4221: no public symbols found; archive member will be inaccessible
+//
+// This warning occurs on PC and XBOX when a file compiles out completely
+// has no externally visible symbols which may be dependant on configuration
+// #defines and options.
+//
+// see more https://stackoverflow.com/questions/1822887/what-is-the-best-way-to-eliminate-ms-visual-c-linker-warning-warning-lnk422
+
+#if defined (_MSC_VER)
+	#define BT_NOT_EMPTY_FILE_CAT_II(p, res) res
+	#define BT_NOT_EMPTY_FILE_CAT_I(a, b) BT_NOT_EMPTY_FILE_CAT_II(~, a ## b)
+	#define BT_NOT_EMPTY_FILE_CAT(a, b) BT_NOT_EMPTY_FILE_CAT_I(a, b)
+	#define BT_NOT_EMPTY_FILE namespace { char BT_NOT_EMPTY_FILE_CAT(NoEmptyFileDummy, __COUNTER__); }
+#else
+	#define BT_NOT_EMPTY_FILE 
+#endif
+
+
 // clang and most formatting tools don't support indentation of preprocessor guards, so turn it off
 // clang-format off
 #if defined(DEBUG) || defined (_DEBUG)