virtualbox-guest-dkms won't build on precise with 3.5.x kernel backport due to a few warnings being treated as errors

[Travis Tilley]

DKMS make.log for virtualbox-guest-4.1.12 for kernel 3.5.0-19-generic (x86_64)
Tue Dec 11 02:08:40 EST 2012
make: Entering directory `/usr/src/linux-headers-3.5.0-19-generic'
  LD /var/lib/dkms/virtualbox-guest/4.1.12/build/built-in.o
  LD /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/built-in.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/VBoxGuest-linux.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/VBoxGuest.o
/var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/VBoxGuest.c: In function ‘VBoxGuestCommonIOCtl’:
/var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/VBoxGuest.c:2480:9: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/VBoxGuest2.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/GenericRequest.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/HGCMInternal.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/Init.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/PhysHeap.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/SysHlp.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/VMMDev.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/alloc-r0drv.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/initterm-r0drv.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/memobj-r0drv.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/mpnotification-r0drv.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/powernotification-r0drv.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/alloc-r0drv-linux.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/assert-r0drv-linux.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/initterm-r0drv-linux.o
  CC [M] /var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/memobj-r0drv-linux.o
/var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/memobj-r0drv-linux.c: In function ‘rtR0MemObjLinuxDoMmap’:
/var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/memobj-r0drv-linux.c:1150:9: error: implicit declaration of function ‘do_mmap’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[2]: *** [/var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest/r0drv/linux/memobj-r0drv-linux.o] Error 1
make[1]: *** [/var/lib/dkms/virtualbox-guest/4.1.12/build/vboxguest] Error 2
make: *** [_module_/var/lib/dkms/virtualbox-guest/4.1.12/build] Error 2
make: Leaving directory `/usr/src/linux-headers-3.5.0-19-generic'

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: virtualbox-guest-dkms 4.1.12-dfsg-2ubuntu0.2
ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
Uname: Linux 3.2.0-34-generic x86_64
ApportVersion: 2.0.1-0ubuntu15
Architecture: amd64
DKMSKernelVersion: 3.5.0-19-generic
Date: Tue Dec 11 02:08:47 2012
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64+mac (20120901.1)
MarkForUpload: True
PackageArchitecture: all
PackageVersion: 4.1.12-dfsg-2ubuntu0.2
SourcePackage: virtualbox
Title: virtualbox-guest-dkms 4.1.12-dfsg-2ubuntu0.2: virtualbox-guest kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)

[pranith (bobby-prani)]

The warning is actually an error and has been fixed. Please try the fix in the ppa mentioned in the other bug report.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.