add_custom_target(ChecksTarget)
add_custom_command(TARGET ChecksTarget COMMAND "CHECKS_FAIL")

add_custom_target(LongTarget)
add_dependencies(LongTarget ChecksTarget)
add_custom_command(TARGET LongTarget POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E echo "BUILDING LongTarget")

add_custom_target(FinalTarget)
add_dependencies(FinalTarget LongTarget)
add_custom_command(TARGET FinalTarget POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E echo "BUILDING FinalTarget")