[Bug 1116382] Re: openvswitch-datapath-dkms FTBFS with 12.04.2 3.5 kernel

[James Page]

** Description changed:

- The openvswitch-datapath-dkms module FTBFS with the 3.5 kernel proposed
- for 12.04.2:
+ [Impact]
+ 
+ Openvswitch DKMS module is not compatible with the 3.5 kernel which will
+ be provided from 12.04.2.  Users of openvswitch will only be able to use
+ the native kernel module which does not support all features including
+ GRE tunnelling.
+ 
+ Openstack Quantum, for example, makes extensive use of this feature.
+ 
+ [Test Case]
+ 
+ Install 12.04.2 from ISO
+ sudo apt-get install openvswitch-datapath-dkms
+ DKMS module fails to build
+ 
+ [Regression Potential]
+ 
+ The cherry picked fixes provide support for the 3.5 kernel and rename
+ the DKMS built modules to remove the _mod suffix.
+ 
+ This could regress the dkms package for 3.2 kernel users.
+ 
+ [Original Bug Report]
+ The openvswitch-datapath-dkms module FTBFS with the 3.5 kernel proposed for 12.04.2:
  
  DKMS make.log for openvswitch-1.4.0 for kernel 3.5.0-23-generic (x86_64)
  Tue Feb  5 15:45:41 GMT 2013
  checking build number... none
  checking for a BSD-compatible install... /usr/bin/install -c
  checking whether build environment is sane... yes
  checking for a thread-safe mkdir -p... /bin/mkdir -p
  checking for gawk... no
  checking for mawk... mawk
  checking whether make sets $(MAKE)... yes
  checking for gcc... gcc
  checking whether the C compiler works... no
  configure: error: in `/var/lib/dkms/openvswitch/1.4.0/build':
  configure: error: C compiler cannot create executables
  See `config.log' for more details
  make: Entering directory `/var/lib/dkms/openvswitch/1.4.0/build/datapath/linux'
  make: *** No targets specified and no makefile found. Stop.
  make: Leaving directory `/var/lib/dkms/openvswitch/1.4.0/build/datapath/linux'
  
  Although the 3.5 kernel does provide a native openvswitch module, it
  does not support GRE tunnels which are used extensively by OpenStack
  Quantum.
  
  The patches currently held for quantal should suffice to fix this
  problem.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: openvswitch-datapath-dkms 1.4.0-1ubuntu1.3
  ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2
  Uname: Linux 3.5.0-23-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.1
  Architecture: amd64
  Date: Tue Feb  5 15:45:03 2013
  InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130205)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: openvswitch
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1116382

Title:
  openvswitch-datapath-dkms FTBFS with 12.04.2 3.5 kernel

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