Mine

Linking CXX shared library ../lib/libkdeinit4_kmplayer.so
CMakeFiles/kdeinit_kmplayer.dir/kmplayerapp.o: In function `KMPlayerApp::KMPlayerApp(QWidget*)':
kmplayerapp.cpp:(.text+0x15655): undefined reference to `KMPlayer::View::initDock(QWidget*)'
CMakeFiles/kdeinit_kmplayer.dir/kmplayerapp.o: In function `KMPlayerApp::KMPlayerApp(QWidget*)':
kmplayerapp.cpp:(.text+0x162b4): undefined reference to `KMPlayer::View::initDock(QWidget*)'
collect2: ld returned 1 exit status
make[2]: *** [lib/libkdeinit4_kmplayer.so] Error 1
make[1]: *** [src/CMakeFiles/kdeinit_kmplayer.dir/all] Error 2
make: *** [all] Error 2