enable_language(CXX)

set(CMAKE_DEBUG_TARGET_PROPERTIES SOURCES)

add_library(iface INTERFACE)
set_property(TARGET iface PROPERTY INTERFACE_SOURCES
  "${CMAKE_CURRENT_SOURCE_DIR}/empty_1.cpp"
)

add_library(OriginDebug empty_2.cpp)
target_link_libraries(OriginDebug iface)

set_property(TARGET OriginDebug APPEND PROPERTY SOURCES
  empty_3.cpp
)

target_sources(OriginDebug PRIVATE empty_4.cpp)