Re: possible simplification?

[Paul D. Smith]

%% Charles Owen <address@hidden> writes:

  co> I wonder if there is a simpler, more direct way to do the following:

  co> package := example

  co> $(classfiles)/$(package)/%.class: $(src)/$(package)/%.java
  co>   @echo "Compiling address@hidden"
  co>   @$(javac) $^

  co> $(classfiles)/$(package)/%.class: $(tests)/$(package)/%.java
  co>   @echo "Compiling address@hidden"
  co>   @$(javac) $^

  co> package := util

  co> $(classfiles)/$(package)/%.class: $(src)/$(package)/%.java
  co>   @echo "Compiling address@hidden"
  co>   @$(javac) $^

  co> $(classfiles)/$(package)/%.class: $(tests)/$(package)/%.java
  co>   @echo "Compiling address@hidden"
  co>   @$(javac) $^


Since $(package) is the same in the target and prerequisite, why not
just write:

  $(classfiles)/%.class : $(src)/%.java
          @echo "Compiling address@hidden"
          @$(javac) $^

  $(classfiles)/%.class : $(tests)/%.java
          @echo "Compiling address@hidden"
          @$(javac) $^

?  Now these rules will work regardless of the value of $(package) for a
particular target.

Remember that "%" is a text matching token; it doesn't know anything
about directory separators and is not limited by them.

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