I'm trying to install the nvidia-bumblebee package from X11:Bumblebee on my
openSUSE 13.2 (with all updates), but it claims to fail / fails with the
following output:

    Building module:
    cleaning build area....(bad exit status: 2)
    make KERNELRELEASE=3.16.7-7-desktop -C /lib/modules/3.16.7-7-desktop/build
SUBDIRS=/var/lib/dkms/nvidia/346.35/build modules....
    Error!  Build of nvidia.ko failed for: 3.16.7-7-desktop (x86_64)
    Consult the make.log in the build directory
    /var/lib/dkms/nvidia/346.35/build/ for more information.
    ++ /usr/sbin/dkms install -m nvidia -v 346.35

    Kernel preparation unnecessary for this kernel.  Skipping...

    Building module:
    cleaning build area....(bad exit status: 2)
    make KERNELRELEASE=3.16.7-7-desktop -C /lib/modules/3.16.7-7-desktop/build
SUBDIRS=/var/lib/dkms/nvidia/346.35/build modules....
    Error!  Build of nvidia.ko failed for: 3.16.7-7-desktop (x86_64)
    Consult the make.log in the build directory
    /var/lib/dkms/nvidia/346.35/build/ for more information.
    ++ popd


the "make.log" referred to in the output contains only these lines:

DKMS make.log for nvidia-346.35 for kernel 3.16.7-7-desktop (x86_64)
Mon Jan 19 18:28:29 CET 2015
make: Entering directory '/usr/src/linux-3.16.7-7-obj/x86_64/desktop'
make[1]: Entering directory `/usr/src/linux-3.16.7-7-obj/x86_64/desktop'
  Building modules, stage 2.
  MODPOST 0 modules
make: Leaving directory '/usr/src/linux-3.16.7-7-obj/x86_64/desktop'


...that does not help me much.