dependency issue

[Lynn Lin]

All,
   I use the following rules to generate dependency automatically

%.P : %.cpp
        $(QUIET_MM)rm -f $@; \
        $(CPP) -M $(CPPFLAGS) $(CXXFLAGS) $(INCLUDES)  $< > address@hidden; \
        sed -e 's,\($*\)\.o[ :]*,$@ \1.o : ,g' < address@hidden > $@; \
        rm -f address@hidden

then include it

When one dependency header file  (it is written to .P file) is deleted
as it is not used,make doesn't work

address@hidden:~/demo$ ./make demo.o
make: *** No rule to make target `../../a.h', needed by `demo.o'.  Stop.

I guess make isn't happy when dependency is missing

Thanks for your help in advance


Thanks
Lynn