diff --git a/libs/ardour/ardour/visibility.h b/libs/ardour/ardour/visibility.h
deleted file mode 100644
index 5b3e5d8996..0000000000
--- a/libs/ardour/ardour/visibility.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
-    Copyright (C) 2013 Paul Davis
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 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 General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
-
-#ifndef __libardour_visibility_h__
-#define __libardour_visibility_h__
-
-/* _WIN32 is defined by most compilers targetting Windows, but within the
- * ardour source tree, we also define COMPILER_MSVC or COMPILER_MINGW depending
- * on how a Windows build is built.
- */
-
-#if defined _WIN32 || defined __CYGWIN__ || defined(COMPILER_MSVC) || defined(COMPILER_MINGW)
-    #define LIBARDOUR_HELPER_DLL_IMPORT __declspec(dllimport)
-    #define LIBARDOUR_HELPER_DLL_EXPORT __declspec(dllexport)
-    #define LIBARDOUR_HELPER_DLL_LOCAL
-#else
-    #define LIBARDOUR_HELPER_DLL_IMPORT __attribute__ ((visibility ("default")))
-    #define LIBARDOUR_HELPER_DLL_EXPORT __attribute__ ((visibility ("default")))
-    #define LIBARDOUR_HELPER_DLL_LOCAL  __attribute__ ((visibility ("hidden")))
-#endif
-
-#endif /* __libardour_visibility_h__ */