make misteriously removes the target objects after build ??

[Jack Zhou]

Hi,

I am experiencing a strange problem.  Make sometimes
misteriously removes some target objects at the end of
build.  So the last line printed out by make is
something like:
"rm a".

In my makefile, the dependency is this:

b : a
    @do sth

c : b
    @do sth

In this case, both b and c are target objects.  But
sometimes at the end of the build, b will be deleted
by make, while it never deleted c.

I also noticed by deleting target object b (manually)
and issue a make, the make will build b then "rm b".
So in this condition I can never build a b.

What did I do wrong?  Thanks for your help.

Jack




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