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You need to tell cmake where the Qt headers are and link against the Qt libraries you need. This site is helpful:

http://qt-project.org/quarterly/view/using_cmake_to_build_qt_projects

You will need to do something like this:

INCLUDE(${QT_USE_FILE})
ADD_DEFINITIONS(${QT_DEFINITIONS})

And:

TARGET_LINK_LIBRARIES(laser_test ${QT_LIBRARIES})

After the find_package call.