Calculating dependencies... done!
>>> Verifying ebuild Manifests...
>>> starting parallel fetching
>>> Emerging (1 of 3) app-emulation/virtualbox-modules-1.3.8-r2 to /
* vbox-kernel-module-src-1.3.8.tar.bz2 MD5 ;-) ... [ ok ]
* vbox-kernel-module-src-1.3.8.tar.bz2 RMD160 ;-) ... [ ok ]
* vbox-kernel-module-src-1.3.8.tar.bz2 SHA1 ;-) ... [ ok ]
* vbox-kernel-module-src-1.3.8.tar.bz2 SHA256 ;-) ... [ ok ]
* vbox-kernel-module-src-1.3.8.tar.bz2 size ;-) ... [ ok ]
* checking ebuild checksums ;-) ... [ ok ]
* checking auxfile checksums ;-) ... [ ok ]
* checking miscfile checksums ;-) ... [ ok ]
* checking vbox-kernel-module-src-1.3.8.tar.bz2 ;-) ... [ 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-1.3.8-r2 failed.
Call stack:
ebuild.sh, line 1630: Called dyn_setup
ebuild.sh, line 702: Called qa_call 'pkg_setup'
ebuild.sh, line 44: Called pkg_setup
virtualbox-modules-1.3.8-r2.ebuild, line 28: Called linux-mod_pkg_setup
linux-mod.eclass, line 464: Called linux-info_pkg_setup
linux-info.eclass, line 554: Called die
!!! 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-1.3.8-r2/temp/build.log'.
!!! This ebuild is from an overlay: '/usr/portage/local/layman/sabayon'