cvs commit: src/usr.sbin/config main.c

[Ruslan Ermilov]

On Fri, Apr 22, 2005 at 01:08:14PM -0700, Marcel Moolenaar wrote:
> On Apr 22, 2005, at 1:03 PM, Ruslan Ermilov wrote:
> 
> >>>What exactly is broken? I don't see a breakage, even when source
> >>>files disappeared. I assume I must be forgetting something or not
> >>>doing everything right.
> >>
> >>when an include file is removed, make depend can fail to recreate
> >>.depend in the modules.
> >>
> >This is only a problem with NO_CLEAN builds, and it's not limited
> >to just modules -- I often saw this problem with the world builds.
> 
> Ok. Does it help if there's an option to make that supresses the
> automatic loading on .depend or more generically, allows one to
> name the depend file and it merely defaults to .depend (suppression
> is then accomplished by specifying /dev/null as the depend file)?
> If such option would be used for "make depend", would that resolve
> the problems in a generic way?
> 
Nope.  We only regenerate .depend when its dependencies are
changed.  For bsd.prog.mk, this means that .depend is only
regenerated when some of ${SRCS} are changed (but this does
NOT cover headers these ${SRCS} include, and some of these
headers may disappear).

To put it differently: when a header disappears, the breakage
is not at the "make depend" stage (which doesn't do anything),
but at a later "make all" stage.

I personally fail to see how this can be solved...  :-(


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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