--- /dev/null
+/*
+ * Copyright © 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Thomas Voß <thomas.voss@canonical.com>
+ */
+
+#ifndef CORE_POSIX_VISIBILITY_H_
+#define CORE_POSIX_VISIBILITY_H_
+
+#if __GNUC__ >= 4
+#define CORE_POSIX_DLL_PUBLIC __attribute__ ((visibility ("default")))
+#define CORE_POSIX_DLL_LOCAL __attribute__ ((visibility ("hidden")))
+#else
+#define CORE_POSIX_DLL_PUBLIC
+#define CORE_POSIX_DLL_LOCAL
+#endif
+
+#endif // CORE_POSIX_VISIBILITY_H_