alculating dependencies... done!
>>> Verifying ebuild Manifests...
>>> starting parallel fetching

>>> Emerging (1 of 3) app-emulation/virtualbox-modules-1.5.0 to /
 * vbox-kernel-module-src-1.5.0.tar.gz RMD160 ;-) ...                                                                                [ ok ]
 * vbox-kernel-module-src-1.5.0.tar.gz SHA1 ;-) ...                                                                                  [ ok ]
 * vbox-kernel-module-src-1.5.0.tar.gz SHA256 ;-) ...                                                                                [ ok ]
 * vbox-kernel-module-src-1.5.0.tar.gz size ;-) ...                                                                                  [ ok ]
 * checking ebuild checksums ;-) ...                                                                                                 [ ok ]
 * checking auxfile checksums ;-) ...                                                                                                [ ok ]
 * checking miscfile checksums ;-) ...                                                                                               [ ok ]
 * checking vbox-kernel-module-src-1.5.0.tar.gz ;-) ...                                                                              [ ok ]
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * 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: app-emulation/virtualbox-modules-1.5.0 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
 *   virtualbox-modules-1.5.0.ebuild, line   26:  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/app-emulation/virtualbox-modules-1.5.0/temp/build.log'.
 * 

 * Messages for package app-emulation/virtualbox-modules-1.5.0:

 * 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: app-emulation/virtualbox-modules-1.5.0 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
 *   virtualbox-modules-1.5.0.ebuild, line   26:  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/app-emulation/virtualbox-modules-1.5.0/temp/build.log'.
 *