Re: [Xen-devel] [OSSTEST PATCH 04/13] building: Delete when cloning, not when preparing $builddir

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [OSSTEST PATCH 04/13] building: Delete when cloning, 
not when preparing $builddir"):
> On Wed, 2014-07-16 at 11:18 +0100, Ian Jackson wrote:
> > The rumpuserxen xen.git build is done (also, must be done) in a tree
> > which has not had any ordinary build done in it.
> 
> OK, then I'm just confused about the purpose of this change ;-)
> 
> I thought you were reusing the build tree.

This change is needed because previously prepbuilddirs would delete
the whole per-job directory.

I will add some text to the commit messages to clarify this:

  building: Delete when cloning, not when preparing $builddir
  ...

  This makes it possible for later steps within a build job to look at
  the build trees from previous steps.  This is helpful if for any
  reason it isn't easy or desirable to package up a formal set of build
  outputs for reuse.

And

  rump kernel tests: Do a xen.git tools build
  ...

  ts-rumpuserxen-build does not generate a formal set of build outputs.
  Instead, the ts-xen-build step references the files generated by
  ts-rumpuserxen-build directly (and is told where to find them via the
  new command prefix runvars).

Ian.

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