cantata-osx-builderror2

╭─epers@wintermute ~/cantata-read-only/build
╰─ make
[ 14%] Built target support
[ 15%] Built target qjson
[ 16%] Built target qtiocompressor
[ 17%] Built target support-core
Scanning dependencies of target cantata
[ 17%] Building CXX object CMakeFiles/cantata.dir/gui/application.cpp.o
In file included from /Users/epers/cantata-read-only/gui/application.cpp:46:
In file included from /Users/epers/cantata-read-only/gui/mainwindow.h:41:
In file included from /Users/epers/cantata-read-only/build/ui_mainwindow.h:32:
/Users/epers/cantata-read-only/widgets/songlabel.h:32:1: warning: class 'Song' was previously declared as a struct
      [-Wmismatched-tags]
class Song;
^
/Users/epers/cantata-read-only/mpd/song.h:37:8: note: previous use is here
struct Song
       ^
/Users/epers/cantata-read-only/widgets/songlabel.h:32:1: note: did you mean struct here?
class Song;
^~~~~
struct
In file included from /Users/epers/cantata-read-only/gui/application.cpp:46:
/Users/epers/cantata-read-only/gui/mainwindow.h:80:1: warning: class 'MPDConnectionDetails' was previously declared as
      a struct [-Wmismatched-tags]
class MPDConnectionDetails;
^
/Users/epers/cantata-read-only/mpd/mpdconnection.h:137:8: note: previous use is here
struct MPDConnectionDetails {
       ^
/Users/epers/cantata-read-only/gui/mainwindow.h:80:1: note: did you mean struct here?
class MPDConnectionDetails;
^~~~~
struct
/Users/epers/cantata-read-only/gui/mainwindow.h:81:1: warning: class 'Output' was previously declared as a struct
      [-Wmismatched-tags]
class Output;
^
/Users/epers/cantata-read-only/mpd/output.h:32:8: note: previous use is here
struct Output
       ^
/Users/epers/cantata-read-only/gui/mainwindow.h:81:1: note: did you mean struct here?
class Output;
^~~~~
struct
/Users/epers/cantata-read-only/gui/application.cpp:272:71: error: call to non-static member function without an object
      argument
        MainWindow *mw=qobject_cast<MainWindow *>(AutohidingSplitter::activateWindow());
                                                  ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
3 warnings and 1 error generated.
make[2]: *** [CMakeFiles/cantata.dir/gui/application.cpp.o] Error 1
make[1]: *** [CMakeFiles/cantata.dir/all] Error 2
make: *** [all] Error 2