A library containing some data types to describe makefiles.
Author: Michael Hanus
Version: February 2017
| showMakeFile
                  :: [MakeElement] -> StringShows a MakeFileas a string in standard makefile syntax. | 
A make file consists of a list of make elements.
              Type synonym: MakeFile = [MakeElement]
            
A data type for the description of an element of a make file.
Constructors:
DefineVariable
                    ::  String ->  [String] -> MakeElement
              Rule
                    ::  [SpecialTarget] ->  String ->  [String] ->  [String] -> MakeElement
              Comment
                    ::  String -> MakeElement
              Empty
                    :: MakeElement
              A data type to describe special targets.
Constructors:
PHONY
                    :: SpecialTarget
              NOTPARALLEL
                    :: SpecialTarget
              | 
                       
                      Shows a  |