xfsprogs for-next build error on Debian Wheezy / amd64

[Christoph Hellwig]

On Wed, Jun 10, 2015 at 01:24:15AM -0700, Christoph Hellwig wrote:
> On Wed, Jun 10, 2015 at 06:19:14PM +1000, Dave Chinner wrote:
> > Does the problem go away after a 'make distclean'?
> 
> No. Neither a distclean nor a fresh clone fixes the issue.
> 
> Also disabling the crc32ctest target I get similar error in other
> code.
> 
> Note that the master branch is doing fine.

I've biscted it to:

commit 2fe8a24dda8a2942a1168c745bf6743ae21991c0
Author: Dave Chinner <dchinner at redhat.com>
Date:   Fri Jun 5 10:13:30 2015 +1000

    libxfs: restructure to match kernel layout

but I still don't understand why it happens.