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[Leann Ogasawara <leann.ogasawara@xxxxxxxxxxxxx>]

Please SRU this fix for Wily.  @danwest (https://launchpad.net/~danwest)
was running into this very issue trying to install the ZFS dkms package
in Wily, ie.

ProblemType: Package
DKMSBuildLog:
 DKMS make.log for zfs-0.6.4.2 for kernel 4.2.0-18-generic (x86_64)
 Tue Nov 10 15:33:06 UTC 2015
 make: *** No targets specified and no makefile found.  Stop.
DKMSKernelVersion: 4.2.0-18-generic
Date: Tue Nov 10 15:33:10 2015
Package: zfs-dkms 0.6.4.2-0ubuntu1
PackageVersion: 0.6.4.2-0ubuntu1
SourcePackage: zfs-linux
Title: zfs-dkms 0.6.4.2-0ubuntu1: zfs kernel module failed to build

However, after installing the fixed dkms-2.2.0.3-2ubuntu7 from cking's
PPA, he is unable to reproduce.

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https://bugs.launchpad.net/bugs/1491729

Title:
  dkms: add module build ordering for ZFS on Linux

Status in dkms package in Ubuntu:
  Fix Released
Status in dkms source package in Wily:
  New

Bug description:
  (updated now from a FFe to a SRU for Wily)
  SRU request, Wily.

  [IMPACT]
  Without this, we can have incorrect ordering which causes DKMS build failures for multiple kernel module projects, such as ZFS (where ZFS requires the ZFS support module spl to be built first).

  [TEST CASE]
  Install Wily zfs, occasionally the build ordering will be zfs and the spl, and the zfs DKMS build will fail because spl is not yet built. With the fix, build ordering for zfs will always occur in spl, then zfs order because it uses the new BUILD_DEPENDS directive.
  Note: The upload will trigger the testing of all DKMS modules, so it'll get an adequate beating by britney (according to Martin Pitt).

  [REGRESSION POTENTIAL]
  DKMS package builds will fail.  

  -------------------
  Feature Freeze Exception Request:

  build ordering to build ZFS on Linux (ZoL) is required, the motivating
  case is for ordering such as modules such as zfs -> spl

  Without this, we can have incorrect ordering which causes DKMS build
  failures for multiple kernel module projects, such as ZFS (where ZFS
  requires the ZFS support module spl to be built first).

  Pull in fixes from the ZFS on Linux project that enable this ordering
  to DKMS.

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