Strange GNU make behavior with -include ?

[Grégoire Sutre]

Hi,

I was having errors with my Makefiles (for Objective Caml), and I could 
pinpoint the problem with the attached very simple Makefile.

Basically (please see the attached Makefile), I use a:

-include fake.depend

statement to include a dependencies makefile 'fake.depend', but this included 
makefile does not exists and cannot be made.  Indeed, fake.depend can be made 
from fake.c, but fake.c does not exist, and it isn't the target of any rule 
-- explicit or implicit).

So I expected make to simply ignore fake.depend (as explained in GNU make's 
manual).

However, it seems that make still wants to make fake.c, as fake.c is the 
prerequisite of another explicit rule (dummy-fake), even though this rule 
shouldn't be used at all in the make process.

I believe that this is a bug, but if it isn't, then I guess the manual should 
be more precise on this subject.

Thanks a lot,

Gregoire Sutre.

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Makefile
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