emerge nvidia-drivers
Calculating dependencies... done!

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) x11-drivers/nvidia-drivers-180.60
 * NVIDIA-Linux-x86_64-180.60-pkg2.run RMD160 SHA1 SHA256 size ;-) ...                                                                    [ ok ]
 * checking ebuild checksums ;-) ...                                                                                                      [ ok ]
 * checking auxfile checksums ;-) ...                                                                                                     [ ok ]
 * checking miscfile checksums ;-) ...                                                                                                    [ ok ]
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found kernel object directory:
 *     /lib/modules/2.6.29.4/build
 * Found sources for kernel version:
 *     2.6.29.4
 * Checking for MTRR support ...                                                                                                           [ ok ]
 * Checking for Paravirtualized guest support ...
>>> Unpacking source...
>>> Unpacking NVIDIA-Linux-x86_64-180.60-pkg2.run to /var/tmp/portage/x11-drivers/nvidia-drivers-180.60/work/NVIDIA-Linux-x86_64-180.60-pkg2
 * Applying NVIDIA_glx-defines.patch ...                                                                                                   [ ok ]
 * Applying NVIDIA_glx-glheader.patch ...                                                                                                  [ ok ]
 * Applying NVIDIA_i2c-hwmon.patch ...                                                                                                     [ ok ]
 * Converting NVIDIA-Linux-x86_64-180.60-pkg2/usr/src/nv/Makefile.kbuild to use M= instead of SUBDIRS= ...                                 [ ok ]
>>> Source unpacked in /var/tmp/portage/x11-drivers/nvidia-drivers-180.60/work
>>> Compiling source in /var/tmp/portage/x11-drivers/nvidia-drivers-180.60/work/NVIDIA-Linux-x86_64-180.60-pkg2 ...
 * Preparing nvidia module
make -j1 HOSTCC=x86_64-pc-linux-gnu-gcc CROSS_COMPILE=x86_64-pc-linux-gnu- LDFLAGS= IGNORE_CC_MISMATCH=yes V=1 SYSSRC=/usr/src/linux SYSOUT=/lib/modules/2.6.29.4/build HOST_CC=x86_64-pc-linux-gnu-gcc clean module
If you are using a Linux 2.4 kernel, please make sure
you either have configured kernel sources matching your
kernel or the correct set of kernel headers installed
on your system.

If you are using a Linux 2.6 kernel, please make sure
you have configured kernel sources matching your kernel
installed on your system. If you specified a separate
output directory using either the "KBUILD_OUTPUT" or
the "O" KBUILD parameter, make sure to specify this
directory with the SYSOUT environment variable or with
the equivalent nvidia-installer command line option.

Depending on where and how the kernel sources (or the
kernel headers) were installed, you may need to specify
their location with the SYSSRC environment variable or
the equivalent nvidia-installer command line option.

*** Unable to determine the target kernel version. ***

make: *** [select_makefile] Error 1
 *
 * ERROR: x11-drivers/nvidia-drivers-180.60 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 3819:  Called linux-mod_src_compile
 *             environment, line 2826:  Called die
 * The specific snippet of code:
 *               eval "emake HOSTCC=\"$(tc-getBUILD_CC)\" 						CROSS_COMPILE=${CHOST}- 		LDFLAGS=\"$(get_abi_LDFLAGS)\" 						${BUILD_FIXES} 						${BUILD_PARAMS} ${BUILD_TARGETS} " || die "Unable to emake HOSTCC="$(tc-getBUILD_CC)" CROSS_COMPILE=${CHOST}- LDFLAGS="$(get_abi_LDFLAGS)" ${BUILD_FIXES} ${BUILD_PARAMS} ${BUILD_TARGETS}";
 *  The die message:
 *   Unable to emake HOSTCC=x86_64-pc-linux-gnu-gcc CROSS_COMPILE=x86_64-pc-linux-gnu- LDFLAGS=  IGNORE_CC_MISMATCH=yes V=1 SYSSRC=/usr/src/linux 		SYSOUT=/lib/modules/2.6.29.4/build HOST_CC=x86_64-pc-linux-gnu-gcc clean module
 *
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/x11-drivers/nvidia-drivers-180.60/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/x11-drivers/nvidia-drivers-180.60/temp/environment'.
 *

>>> Failed to emerge x11-drivers/nvidia-drivers-180.60, Log file:

>>>  '/var/tmp/portage/x11-drivers/nvidia-drivers-180.60/temp/build.log'

 * Messages for package x11-drivers/nvidia-drivers-180.60:

 *
 * ERROR: x11-drivers/nvidia-drivers-180.60 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 3819:  Called linux-mod_src_compile
 *             environment, line 2826:  Called die
 * The specific snippet of code:
 *               eval "emake HOSTCC=\"$(tc-getBUILD_CC)\" 						CROSS_COMPILE=${CHOST}- 		LDFLAGS=\"$(get_abi_LDFLAGS)\" 						${BUILD_FIXES} 						${BUILD_PARAMS} ${BUILD_TARGETS} " || die "Unable to emake HOSTCC="$(tc-getBUILD_CC)" CROSS_COMPILE=${CHOST}- LDFLAGS="$(get_abi_LDFLAGS)" ${BUILD_FIXES} ${BUILD_PARAMS} ${BUILD_TARGETS}";
 *  The die message:
 *   Unable to emake HOSTCC=x86_64-pc-linux-gnu-gcc CROSS_COMPILE=x86_64-pc-linux-gnu- LDFLAGS=  IGNORE_CC_MISMATCH=yes V=1 SYSSRC=/usr/src/linux 		SYSOUT=/lib/modules/2.6.29.4/build HOST_CC=x86_64-pc-linux-gnu-gcc clean module
 *
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/x11-drivers/nvidia-drivers-180.60/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/x11-drivers/nvidia-drivers-180.60/temp/environment'.
 *