Tony Mechelynck wrote:
> > The place of the include should not matter. The Makefile is first read
> > completely before dependencies are followed. "distclean" does not
> > depend on auto/config.mk. Perhaps your make program implies this
> > dependency when including a file? I would call that a bug (some might
> > call it a feature...).
> >
>
> I'm using GNU make, version 3.80. From "info make", under "Include", I read
> the following (about two-thirds of the way down):
>
> [...]
> Once it has finished reading makefiles, `make' will try to remake any
> that are out of date or don't exist. *Note How Makefiles Are Remade:
> Remaking Makefiles. Only after it has tried to find a way to remake a
> makefile and failed, will `make' diagnose the missing makefile as a
> fatal error.
> [...]
>
> In this case, since there is a rule to make auto/config.mk, with
> auto/configure, config.mk.in and config.h.in as prerequisites, and one
> or more of the latter are newer than the included file config.mk, the
> latter is "an out-of-date makefile" and make tries to remake it -- by
> running configure. IOW this is a "documented feature" of GNU make.
But I don't want to update auto/config.mk. I can understand that it's
build when it does not exist, otherwise the only alternative is giving
an error message and die. But when it exists it should be used as-is.
I would rather call this a bug than a feature, I didn't specify the file
should be updated. Isn't there a way to disable this "feature"?
> Since the include is in src/Makefile and not in vim70/Makefile, by
> placing the "distclean" rule in the latter (explicitly, not as a call
> to src/Makefile) we would avoid the include altogether, and thus the
> check on whether the included makefile is out of date.
"make distclean" should work in the "src" directory, like everything
else.
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