Waf: Entering directory `/root/programming/myLv2/plugins/eg-sinsynth.lv2/build'
[6/7] cxx: sinsynth_gui.cpp -> build/sinsynth_gui.cpp.4.o
../sinsynth_gui.cpp: In function 'const void* extension_data(const char*)':
../sinsynth_gui.cpp:169:16: error: 'LV2UI_Show_Interface' does not name a type
   static const LV2UI_Show_Interface show_iface = { ui_show, ui_hide };
                ^
../sinsynth_gui.cpp:170:16: error: 'LV2UI_Idle_Interface' does not name a type
   static const LV2UI_Idle_Interface idle_iface = { idle };
                ^
../sinsynth_gui.cpp:172:20: error: 'LV2_UI__showInterface' was not declared in this scope
   if (!strcmp(uri, LV2_UI__showInterface))
                    ^
../sinsynth_gui.cpp:174:20: error: 'show_iface' was not declared in this scope
     return (void*)&show_iface;
                    ^
../sinsynth_gui.cpp:176:25: error: 'LV2_UI__idleInterface' was not declared in this scope
   else if (!strcmp(uri, LV2_UI__idleInterface))
                         ^
../sinsynth_gui.cpp:178:13: error: 'idle_iface' was not declared in this scope
     return &idle_iface;