How to use QDBUS_ADD_INTERFACES cmake macro?

[Gary Cramblitt]

I tried this is my CMakeLists.txt file:
-----
set(kttsmgr_SRCS 
    kttsmgr.cpp 
    kspeechinterface.cpp )

QDBUS_ADD_INTERFACES(${kttsmgr_SRCS} org.kde.KSpeech.xml )

kde4_automoc(${kttsmgr_SRCS})

kde4_add_executable(kttsmgr ${kttsmgr_SRCS})

target_link_libraries(kttsmgr
    ${KDE4_KDECORE_LIBS}
    ${KDE4_KDEUI_LIBS}
    ${KDE4_KUTILS_LIBS} )

install_targets(/bin kttsmgr )
-----

I placed a copy of org.kde.KSpeech.xml in the kttsmgr source directory.

But I'm getting

make[2]: *** No rule to make target 
`../kdeaccessibility/kttsd/kttsmgr/kspeechinterface.cpp', needed by 
`kttsd/kttsmgr/kspeechinterface.cpp'.  Stop.

-- 
Gary Cramblitt (aka PhantomsDad)
KDE Text-to-Speech Maintainer
http://accessibility.kde.org/developer/kttsd/index.php