Re: make dep fails on 2.5.22

From: Kai Germaschewski (kai@tp1.ruhr-uni-bochum.de)
Date: Tue Jun 18 2002 - 11:22:21 EST


On Tue, 18 Jun 2002, James Bottomley wrote:

> It currently errors out for me with my NCR_D700 controller because 53c700.c
> requires 53c700_d.h which is an automatically generated header file and thus
> doesn't exist when make dep is run.
>
> I can fix this by adding the rule:
>
> $(MODVERDIR)/53c700.ver: 53c700_d.h
>
> but this looks wrong. The dependency is already listed in the existing rule:
>
> 53c700.o: 53c700_d.h

Well, actually, it looks right to me: It says to build the .ver file, we
need the header (since it'll be included during the process).

It looks somewhat ugly, but I think it's one of the very few places where
something like this is needed. Of course, if there was a way to tell make
"$(MODVERDIR)/%.ver has the same prequisites as %.o" that'd be nicer, but
there isn't AFAICT.

Another possibility would be to record these kind of explicit dependencies
on generated files into variables, so Rules.make could do the right thing.

Something like

        53c700.o-needs := 53c700_d.h

But I'm not sure that's so much nicer.

--Kai

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