[m-dev.] mmake realclean in the runtime directory

[Warwick Harvey]

Zoltan wrote:
> The realclean target now depends on realclean_local and thus on clean_local,
> but does not depend on the clean target. Is this intentional? In the runtime
> directory, the realclean target doesn't have an explicit dependence on clean,
> since (I believe) it used to have a dependence in Mmake.rules. As a result,
> doing a realclean does not actually remove the object files.

Normally (in a standard "Makefile") one has to declare the dependence of 
`realclean' on `clean' explicitly.  It appears this is also the case in 
Mmakefiles if one wishes to redefine `clean'.  It's not clear whether this 
is intentional or not.  The realclean_local target obviously really does 
depend on the clean_local target, but it's conceivable the user may wish to 
not have the realclean target depend on the clean target.  This stuff was 
implemented with recursive cleans in mind, so there may be something there, 
but I can't think of anything right now which would need this lack of 
dependency but still work right in other cases.

Maybe Mark (who implemented the local targets) can shed some light?  I can't 
find any messages about it in the web archive (though I'm pretty sure I saw 
some at the time).

> BTW, mmake still has lots of stuff about programs that we deleted a while
> ago, msc etc.

Yes, same goes for the tools/bootcheck script (though that is of course less 
user-visible).

Some of this support is worth keeping.  For instance, continuing to delete 
the Prolog files in the clean targets is probably worth maintaining until at 
least the next release.  That way, if people have such files lying around 
when they upgrade, they still get cleaned up by the new version.

Warwick

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