Re: Help with prerequisites for unit testing rule

[John Graham-Cumming]

On Tue, 2005-02-08 at 09:28, Björn Lindström wrote:
> CLASSPATH=.:/usr/share/java/junit.jar
> 
> JAVAC=javac -classpath $(CLASSPATH)
> JUNIT=java -classpath $(CLASSPATH) junit.textui.TestRunner
> 
> CLASSES=A.class B.class C.class
> 
> all: $(CLASSES)
> 
> %.class: %.java
>         $(JAVAC) $<
> 
> test: $(CLASSES:%=Test%)
>         $(JUNIT) $(patsubst %.class,%,$<)
> 
> .PHONY: clean
> clean:
>         -rm $(CLASSES) $(CLASSES:%=Test%)
> ----
> 
> My question is how to get the test rule to make A.class a prerequisite
> for TestA.class, B.class a prerequisite for TestB.class, and so on.

Check out static pattern rules in the GNU Make manual.  The actual
syntax you want to add to your Makefile is:

    $(CLASSES:%=Test%): Test%: % 

Since you are repeating the substitution reference in many places it's
probably a good idea to define

    TESTCLASSES := $(CLASSES:%=Test%)

John.
-- 
John Graham-Cumming

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