--- mp4v2-trunk-r355/include/mp4v2/platform.h	2009-05-20 19:52:26.000000000 -0700
+++ xxx/include/mp4v2/platform.h	2010-09-11 09:36:20.881523832 -0700
@@ -24,7 +24,7 @@
 #if defined( _WIN32 ) || defined( __MINGW32__ )
 #   if defined( _WINDLL ) || defined( DLL_EXPORT )
 #       define MP4V2_EXPORT __declspec(dllexport)
-#   elif defined( _DLL ) || defined( DLL_IMPORT ) 
+#   elif defined( DLL_IMPORT ) 
 #       define MP4V2_EXPORT __declspec(dllimport)
 #   else
 #       define MP4V2_EXPORT