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Re: [Xen-devel] [PATCH v2 6/7] build system: stubdom targets now depends on mini-os target



On Tue, 2015-02-24 at 16:52 +0000, Wei Liu wrote:
> On Tue, Feb 24, 2015 at 04:33:17PM +0000, Ian Campbell wrote:
> > On Fri, 2015-02-20 at 11:17 +0000, Wei Liu wrote:
> > > @@ -161,7 +163,7 @@ clean-tools:
> > >   $(MAKE) -C tools clean
> > >  
> > >  .PHONY: clean-stubdom
> > > -clean-stubdom:
> > > +clean-stubdom: mini-os-dir
> > >   $(MAKE) -C stubdom crossclean
> > >  ifeq (x86_64,$(XEN_TARGET_ARCH))
> > >   XEN_TARGET_ARCH=x86_32 $(MAKE) -C stubdom crossclean
> > > @@ -187,11 +189,12 @@ distclean-tools:
> > >   $(MAKE) -C tools distclean
> > >  
> > >  .PHONY: distclean-stubdom
> > > -distclean-stubdom:
> > > +distclean-stubdom: mini-os-dir
> > 
> > These two are a bit odd, since they will force a clone in order to clean
> > (and in the distclean case immediately discard again).
> > 
> 
> That's because stubdom's distclean is quite broken, it just won't work
> without mini-os.

If the mini-os dir is not present then I don't think there is any need
to distclean the stubdom, is there? How would anything be present?

> 
> > The way we handle this with e.g. qemu is to have
> > subdir-clean-qemu-xen-traditional-dir:
> >         set -e; if test -d qemu-xen-traditional-dir/.; then \
> >                 $(MAKE) -C qemu-xen-traditional-dir clean; \
> >         fi
> > 
> > so I think you want a pair of {clean,distclean}-mini-os-dir rules which
> > recurse iff the dir exists.
> > 
> 
> No, we don't actually need to enter mini-os dir and make clean /
> distclean when doing clean and distclean of stubdom.

Didn't you just contradict what you said further above?



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