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-rw-r--r--libs/ardour/ardour/comparable_shared_ptr.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/libs/ardour/ardour/comparable_shared_ptr.h b/libs/ardour/ardour/comparable_shared_ptr.h
index 5ff19af419..0aaacd6659 100644
--- a/libs/ardour/ardour/comparable_shared_ptr.h
+++ b/libs/ardour/ardour/comparable_shared_ptr.h
@@ -21,10 +21,12 @@
#ifndef __ardour_comparable_shared_ptr_h__
#define __ardour_comparable_shared_ptr_h__
+#include "ardour/libardour_visibility.h"
+
namespace ARDOUR {
template<typename T>
-class ComparableSharedPtr : public boost::shared_ptr<T>
+class LIBARDOUR_API ComparableSharedPtr : public boost::shared_ptr<T>
, public boost::less_than_comparable<ComparableSharedPtr<T> >
{
public: