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Re: [Xen-devel] [PATCH for 4.6] build: fix tarball stubdom build



>>> On 27.08.15 at 18:24, <wei.liu2@xxxxxxxxxx> wrote:
> On Thu, Aug 27, 2015 at 10:05:56AM -0600, Jan Beulich wrote:
>> >>> On 27.08.15 at 17:54, <wei.liu2@xxxxxxxxxx> wrote:
>> > When we create a source code tarball, mini-os is extracted to
>> > extras/mini-os directory. When building a source code tarball, we
>> > shouldn't clone mini-os again.
>> > 
>> > Only clone mini-os when that directory doesn't exist. This fixes tarball
>> > build and doesn't affect non-tarball build.
>> > 
>> > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
>> > Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
>> > Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
>> > ---
>> >  Makefile | 10 ++++++----
>> >  1 file changed, 6 insertions(+), 4 deletions(-)
>> > 
>> > diff --git a/Makefile b/Makefile
>> > index e8a75ff..ba0df70 100644
>> > --- a/Makefile
>> > +++ b/Makefile
>> > @@ -19,10 +19,12 @@ include Config.mk
>> >  
>> >  .PHONY: mini-os-dir
>> >  mini-os-dir:
>> > -  GIT=$(GIT) $(XEN_ROOT)/scripts/git-checkout.sh \
>> > -          $(MINIOS_UPSTREAM_URL) \
>> > -          $(MINIOS_UPSTREAM_REVISION) \
>> > -          $(XEN_ROOT)/extras/mini-os
>> > +  if [ ! -d $(XEN_ROOT)/extras/mini-os ]; then \
>> > +          GIT=$(GIT) $(XEN_ROOT)/scripts/git-checkout.sh \
>> > +                  $(MINIOS_UPSTREAM_URL) \
>> > +                  $(MINIOS_UPSTREAM_REVISION) \
>> > +                  $(XEN_ROOT)/extras/mini-os ; \
>> > +  fi
>> 
>> Wouldn't his better be done (avoiding the need for the shell
>> conditional) by simply renaming the make target from
>> mini-os-dir to extras/mini-os (and dropping the .PHONY)?
> 
> All targets for external trees follow some conventions defined in
> tools/Makefile. Although I didn't strictly follow the same rules in
> mini-os's case, I don't want it to deviate from the original rules too
> much.

That's not true: ${target}-dir are actual directories (and hence
not phony targets) in tools/Makefile (they might also be symlinks,
but that's not of interest for the purposes here). Which is
precisely what I'm asking to be done here too, just that I'd see
the existing naming (extra/mini-os) preserved rather than
changed to extra/mini-os-dir).

Jan


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