Ошибка при обновлении

Подскажите как исправить ошибку, которая появляется при обновлении:

* Messages for package net-wireless/madwimax-0.1.1:

* 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: net-wireless/madwimax-0.1.1 failed (setup phase):
* Kernel not configured; no .config found in /lib/modules/3.0.4-calculate/build
*
* Call stack:
* ebuild.sh, line 85: Called pkg_setup
* environment, line 3486: Called linux-info_pkg_setup
* environment, line 2909: Called check_extra_config
* environment, line 844: Called require_configured_kernel
* environment, line 3702: Called die
* The specific snippet of code:
* die "Kernel not configured; no .config found in ${KV_OUT_DIR}";
*
* If you need support, post the output of `emerge --info '=net-wireless/madwimax-0.1.1'`,
* the complete build log and the output of `emerge -pqv '=net-wireless/madwimax-0.1.1'`.
* The complete build log is located at '/var/calculate/tmp/portage/net-wireless/madwimax-0.1.1/temp/build.log'.
* The ebuild environment file is located at '/var/calculate/tmp/portage/net-wireless/madwimax-0.1.1/temp/environment'.
* Working directory: '/var/calculate/tmp/portage/net-wireless/madwimax-0.1.1'
* S: '/var/calculate/tmp/portage/net-wireless/madwimax-0.1.1/work/madwimax-0.1.1'

Причем тут /lib/modules/3.0.4-calculate, если я использую ядро 3.4.5