include abstract_ui.cc in mackie source to actually instantiate the AbstractUI template

git-svn-id: svn://localhost/ardour2/branches/3.0@10251 d708f5d6-7413-0410-9779-e7cbd77b26cf

diff --git a/libs/surfaces/mackie/mackie_control_protocol.cc b/libs/surfaces/mackie/mackie_control_protocol.cc
index eb269ef87ceba140eca1ca52563587d8a48ec631..65a03f483debd2f18228a9532979e8fc2f9e06dd 100644 (file)
--- a/libs/surfaces/mackie/mackie_control_protocol.cc
+++ b/libs/surfaces/mackie/mackie_control_protocol.cc
@@ -70,6 +70,8 @@ using namespace PBD;
 
 #include "i18n.h"
 
+#include "pbd/abstract_ui.cc" // instantiate template
+
 MackieMidiBuilder builder;
 
 #define midi_ui_context() MidiControlUI::instance() /* a UICallback-derived object that specifies the event loop for signal handling */