Makefile : %.class: %.java

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#3768

From: * Tong *
Date: Sat, 02 Jun 2001 17:49

36 lines
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jik@kamens.brookline.ma.us (Jonathan Kamens) writes:

> ${CLASSFDIR}/%.class: %.java
>         javac -d ${CLASSFDIR} $<

Thanks.

> >PS. I tried 
> >${CLASSFDIR}/%.class: %.java
> >
> >and it didn't seem to work. Can't remember why tho.
> 
> Well, we certainly can't figure it out either, if that's all the
> information you provide....

Oh, at last I recalled why it failed. It has nothing to do with the
OP though. It is really a java issue -- The above will not work if
the java program belongs to a package. The generated .class file
will not be under ${CLASSFDIR} but somewhere beneath it, causing the
make always recompile. 

Here is an example of explicit rule:

${CLASSFDIR}/knn/DbKnn.class: knn/DbKnn.java
        javac -d ${CLASSFDIR} knn/DbKnn.java

${CLASSFDIR}/knn/Knn.class: knn/Knn.java
        javac -d ${CLASSFDIR} knn/Knn.java

Any idea that can make 'make' work this way? 

-- 
Tong (remove underscore(s) to reply)
  *niX Power Tools Project: http://xpt.sourceforge.net/
  http://members.xoom.com/suntong001/
  - All free contribution & collection

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From: * Tong * <sun_tong_001@yahoo.com>
Newsgroups: comp.unix.programmer,gnu.utils.help
Subject: Makefile : %.class: %.java
Date: 02 Jun 2001 14:49:33 -0300
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