Only include intrin.h on Windows
diff --git a/src/backend/common/Math.cpp b/src/backend/common/Math.cpp
index 41af98f..874aee0 100644
--- a/src/backend/common/Math.cpp
+++ b/src/backend/common/Math.cpp
@@ -14,7 +14,9 @@
 
 #include "Math.h"
 
-#include <intrin.h>
+#if defined(_WIN32) || defined(_WIN64)
+    #include <intrin.h>
+#endif
 
 #include "Forward.h"