ERROR: x11-drivers/ati-drivers-8.42.3-r10 failed.
 * Call stack:
 *                       ebuild.sh, line 1711:  Called dyn_setup
 *                       ebuild.sh, line  762:  Called qa_call 'pkg_setup'
 *                       ebuild.sh, line   44:  Called pkg_setup
 *   ati-drivers-8.42.3-r10.ebuild, line   61:  Called linux-mod_pkg_setup
 *                linux-mod.eclass, line  465:  Called linux-info_pkg_setup
 *               linux-info.eclass, line  558:  Called die
 * The specific snippet of code:
 *      get_version || die "Unable to calculate Linux Kernel version"
 *  The die message:
 *   Unable to calculate Linux Kernel version
 *
 * 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/ati-drivers-8.42.3-r10/temp/build.log'.
 *