text: ### the directory name
  set(directory source/ANALYSIS/TARGETED)
  
  ### list all filenames of the directory here
  set(sources_list
  MetaboTargetedAssay.cpp
  MRMMapping.cpp
  PrecursorIonSelectionPreprocessing.cpp
  PrecursorIonSelection.cpp
  OfflinePrecursorIonSelection.cpp
  PSLPFormulation.cpp
  PSProteinInference.cpp
  IncludeExcludeTarget.cpp
  TargetedExperiment.cpp
  TargetedExperimentHelper.cpp
  InclusionExclusionList.cpp
  )
  
  ### add path to the filenames
  set(sources)
  foreach(i ${sources_list})
  	list(APPEND sources ${directory}/${i})
  endforeach(i)
  
  ### pass source file list to the upper instance
  set(OpenMS_sources ${OpenMS_sources} ${sources})
  
  ### source group definition
  source_group("Source Files\\ANALYSIS\\TARGETED" FILES ${sources})
  
  