Entiers/Makefile

   1 # define compiler and compiler flag variables
   2 # define a variable for compiler flags (JFLAGS)
   3 # define a variable for the compiler (JC)
   4 # define a variable for the Java Virtual Machine (JVM)
   5
   6 JFLAGS = -g
   7 JC = javac
   8 JVM = java
   9
  10 #
  11 # Clear any default targets for building .class files from .java files; we
  12 # will provide our own target entry to do this in this makefile.
  13 # make has a set of default targets for different suffixes (like .c.o)
  14 # Currently, clearing the default for .java.class is not necessary since
  15 # make does not have a definition for this target, but later versions of
  16 # make may, so it doesn't hurt to make sure that we clear any default
  17 # definitions for these
  18 #
  19
  20 .SUFFIXES: .java .class
  21
  22
  23 #
  24 # Here is our target entry for creating .class files from .java files
  25 # This is a target entry that uses the suffix rule syntax:
  26 #       DSTS:
  27 #               rule
  28 # DSTS (Dependency Suffix     Target Suffix)
  29 # 'TS' is the suffix of the target file, 'DS' is the suffix of the dependency
  30 #  file, and 'rule'  is the rule for building a target
  31 # '$*' is a built-in macro that gets the basename of the current target
  32 # Remember that there must be a < tab > before the command line ('rule')
  33 #
  34
  35 .java.class:
  36         $(JC) $(JFLAGS) $*.java
  37
  38
  39 #
  40 # CLASSES is a macro consisting of N words (one for each java source file)
  41 # When a single line is too long, use \<return> to split lines that then will be
  42 # considered as a single line. For example:
  43 # NAME = Camilo \
  44          Juan
  45 # is understood as
  46 # NAME = Camilo        Juan
  47
  48 CLASSES = \
  49         Entiers.java
  50
  51 #
  52 # MAIN is a variable with the name of the file containing the main method
  53 #
  54
  55 MAIN = Entiers
  56
  57 #
  58 # the default make target entry
  59 # for this example it is the target classes
  60
  61 default: classes
  62
  63
  64 # Next line is a target dependency line
  65 # This target entry uses Suffix Replacement within a macro:
  66 # $(macroname:string1=string2)
  67 # In the words in the macro named 'macroname' replace 'string1' with 'string2'
  68 # Below we are replacing the suffix .java of all words in the macro CLASSES
  69 # with the .class suffix
  70 #
  71
  72 classes: $(CLASSES:.java=.class)
  73
  74
  75 # Next two lines contain a target for running the program
  76 # Remember the tab in the second line.
  77 # $(JMV) y $(MAIN) are replaced by their values
  78
  79 run: $(MAIN).class
  80         $(JVM) $(MAIN)
  81
  82 # this line is to remove all unneeded files from
  83 # the directory when we are finished executing(saves space)
  84 # and "cleans up" the directory of unneeded .class files
  85 # RM is a predefined macro in make (RM = rm -f)
  86 #
  87
  88 clean:
  89         $(RM) *.class