* These sources have not yet been prepared.
 * We cannot build against an unprepared tree.
 * To resolve this, please type the following:
 * 
 * # cd /usr/src/linux
 * # make oldconfig
 * # make modules_prepare
 * 
 * Then please try merging this module again.
 * 
 * ERROR: x11-drivers/nvidia-drivers-100.14.23-r10 failed.
 * Call stack:
 *                             ebuild.sh, line 1712:  Called dyn_setup
 *                             ebuild.sh, line  763:  Called qa_call 'pkg_setup'
 *                             ebuild.sh, line   44:  Called pkg_setup
 *   nvidia-drivers-100.14.23-r10.ebuild, line  126:  Called linux-mod_pkg_setup
 *                      linux-mod.eclass, line  466:  Called check_kernel_built
 *                     linux-info.eclass, line  372:  Called die
 * The specific snippet of code:
 *              die "Kernel sources need compiling first"
 *  The die message:
 *   Kernel sources need compiling first
 * 
 * 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-100.14.23-r10/temp/build.log'.
 *