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diff --git a/sourcecodes/localscore/Visibility.h b/sourcecodes/localscore/Visibility.h
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+/*
+ *  R : A Computer Language for Statistical Data Analysis
+ *  Copyright (C) 2008    the R Core Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 2.1 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program; if not, a copy is available at
+ *  http://www.r-project.org/Licenses/
+ */
+
+/*
+  Definitions controlling visibility on some platforms.
+
+  Part of the API.
+*/
+
+#ifndef R_EXT_VISIBILITY_H_
+#define R_EXT_VISIBILITY_H_
+
+#include <Rconfig.h>
+
+#ifdef HAVE_VISIBILITY_ATTRIBUTE
+# define attribute_visible __attribute__ ((visibility ("default")))
+# define attribute_hidden __attribute__ ((visibility ("hidden")))
+#else
+# define attribute_visible
+# define attribute_hidden
+#endif
+
+#endif /* R_EXT_VISIBILITY_H_ */