include/rays/defs.h in rays-0.2.1 vs include/rays/defs.h in rays-0.3

@@ -9,9 +9,16 @@
 
 #include <xot/defs.h>
 #include <xot/string.h>
 
 
+#if defined(WIN32) && defined(GCC) && defined(RAYS)
+	#define RAYS_EXPORT __declspec(dllexport)
+#else
+	#define RAYS_EXPORT
+#endif
+
+
 namespace Rays
 {
 
 
 	using namespace Xot::Types;