You need https://github.com/sailfishos/qmllive-sailfish/blob/master/rpm/qmllive-sailfish.spec#L12 in your .spec and https://github.com/sailfishos/qmllive-sailfish/blob/master/src/src.pro#L8 in your .pro. (Note: do not add link_pkgconfig to CONFIG!)
You need https://github.com/sailfishos/qmllive-sailfish/blob/master/rpm/qmllive-sailfish.spec#L12 in your .spec and https://github.com/sailfishos/qmllive-sailfish/blob/master/src/src.pro#L8 in your .pro. (Note: do not add link_pkgconfig to CONFIG!)