>>> Emerging (10 of 12) sys-apps/hal-0.5.10 to /
 * hal-0.5.10-gentoo-patches-0.tar.bz2 RMD160 SHA1 SHA256 size ;-) ...          [ ok ]
 * hal-0.5.10.tar.gz RMD160 SHA1 SHA256 size ;-) ...                            [ ok ]
 * checking ebuild checksums ;-) ...                                            [ ok ]
 * checking auxfile checksums ;-) ...                                           [ ok ]
 * checking miscfile checksums ;-) ...                                          [ ok ]
 * checking hal-0.5.10.tar.gz ;-) ...                                           [ ok ]
 * checking hal-0.5.10-gentoo-patches-0.tar.bz2 ;-) ...                         [ ok ]
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found sources for kernel version:
 *
  ERROR: Kernel configuration is invalid.
         include/linux/autoconf.h or include/config/auto.conf are missing.
         Run 'make oldconfig && make prepare' on kernel src to fix it.

2.
  ERROR: Kernel configuration is invalid.
         include/linux/autoconf.h or include/config/auto.conf are missing.
         Run 'make oldconfig && make prepare' on kernel src to fix it.

6.
  ERROR: Kernel configuration is invalid.
         include/linux/autoconf.h or include/config/auto.conf are missing.
         Run 'make oldconfig && make prepare' on kernel src to fix it.

23
  ERROR: Kernel configuration is invalid.
         include/linux/autoconf.h or include/config/auto.conf are missing.
         Run 'make oldconfig && make prepare' on kernel src to fix it.

-sabayon-r1
/usr/portage/eclass/linux-info.eclass: line 219: [: too many arguments
 * HAL requires a kernel version 2.6.19 or newer
 * Could not find a usable .config in the kernel source directory.
 * Please ensure that /usr/src/linux points to a configured set of Linux sources.
 * If you are using KBUILD_OUTPUT, please set the environment var so that
 * it points to the necessary object directory so that it might find .config.
 *
 * ERROR: sys-apps/hal-0.5.10 failed.
 * Call stack:
 *               ebuild.sh, line   46:  Called pkg_setup
 *       hal-0.5.10.ebuild, line  111:  Called linux_chkconfig_present 'pkg_setup'
 *       linux-info.eclass, line  151:  Called require_configured_kernel
 *       linux-info.eclass, line  145:  Called die
 * The specific snippet of code:
 *              die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
 *  The die message:
 *   Kernel not configured; no .config found in /usr/src/linux
 *
 * 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/sys-apps/hal-0.5.10/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-apps/hal-0.5.10/temp/die.env'.
 *