# emerge nvidia-kernel nvidia-glx
Calculating dependencies... done!
>>> starting parallel fetching
>>> Emerging (1 of 2) media-video/nvidia-kernel-1.0.8762-r1 to /
>>> Downloading http://distfiles.gentoo.org/distfiles/NVIDIA-Linux-x86-1.0-8762-pkg1.run
--21:07:17-- http://distfiles.gentoo.org/distfiles/NVIDIA-Linux-x86-1.0-8762-pkg1.run
=> `/usr/portage/distfiles/NVIDIA-Linux-x86-1.0-8762-pkg1.run'
Resolving distfiles.gentoo.org... 216.165.129.135, 156.56.247.195, 64.50.236.52, ...
Connecting to distfiles.gentoo.org|216.165.129.135|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 13,032,175 (12M) [text/plain]
100%[====================================>] 13,032,175 175.29K/s ETA 00:00
21:08:29 (176.11 KB/s) - `/usr/portage/distfiles/NVIDIA-Linux-x86-1.0-8762-pkg1.run' saved [13032175/13032175]
>>> checking ebuild checksums ;-)
>>> checking auxfile checksums ;-)
>>> checking miscfile checksums ;-)
>>> checking NVIDIA-Linux-x86-1.0-8762-pkg1.run ;-)
* Determining the location of the kernel source code
* Unable to find kernel sources at /usr/src/linux
* This package requires Linux sources.
* Please make sure that /usr/src/linux points at your running kernel,
* (or the kernel you wish to build against).
* Alternatively, set the KERNEL_DIR environment variable to the kernel sources location
!!! ERROR: media-video/nvidia-kernel-1.0.8762-r1 failed.
Call stack:
ebuild.sh, line 1555: Called dyn_setup
ebuild.sh, line 668: Called pkg_setup
nvidia-kernel-1.0.8762-r1.ebuild, line 58: Called linux-mod_pkg_setup
linux-mod.eclass, line 419: Called linux-info_pkg_setup
linux-info.eclass, line 554: Called die
!!! Unable to calculate Linux Kernel version
!!! If you need support, post the topmost build error, and the call stack if relevant.