make出错,doesn't match the target pattern

THEBEST

all: tools

JAVAFILES =  $(shell find src -name "*.java"|grep -v SCCS|grep -v j2se)

CLASSFILES = $(subst src,classes,$(JAVAFILES:java=class))

$(CLASSFILES):: classes/%.class : src/%.java
        @echo $< >> .filelist

tools: (CLASSFILES)

当前目录下有src,下面有子目录及更多的.java,在winxp上使用gnu make3.8编译，报出
Makefile:48: target `classes\abc\def\A.class' doesn 't match the target pattern的错误，目录结构src/abc/def/A.java

请问这个怎么改？

另外grep -v这个起到什么作用啊？好像没有-v结果也一样

prc

try

1. 
   
2. all: tools
   
3. 
   
4. JAVAFILES :=  $(shell find src -name "*.java"|grep -v SCCS|grep -v j2se)
   
5. CLASSFILES := $(subst src,classes,$(JAVAFILES:java=class))
   
6. VPATH := src
   
7. 
   
8. $(CLASSFILES):: classes/%.class : %.java
   
9.         @echo $< >> .filelist
   
10. 
    
11. tools: (CLASSFILES)
    

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