No matter what I do, I constantly get the whole "Unable to calculate Linux kernel"


localhost linux # emerge vmware-modules

!!! Your current profile is deprecated and not supported anymore.
!!! Please upgrade to the following profile if possible:
        default-linux/x86/2007.0/desktop

To upgrade do the following steps:
# There are several possible profiles that you can use to replace this one.

# default-linux/x86/2007.0
# default-linux/x86/2007.0/desktop
# default-linux/x86/2007.0/server
# default-linux/x86/no-nptl
# default-linux/x86/no-nptl/2.4

# By default, we use the desktop profile.

# emerge -n '>=sys-apps/portage-2.0.51'
# cd /etc
# rm make.profile
# ln -s ../usr/portage/profiles/default-linux/x86/2007.0/desktop make.profile

# This profile is deprecated and will be removed on or after June 1, 2007


Calculating dependencies... done!
>>> Verifying ebuild Manifests...

>>> Emerging (1 of 1) app-emulation/vmware-modules-1.0.0.15-r1 to /
 * vmware-any-any-update109.tar.gz RMD160 ;-) ...                         [ ok ]
 * vmware-any-any-update109.tar.gz SHA1 ;-) ...                           [ ok ]
 * vmware-any-any-update109.tar.gz SHA256 ;-) ...                         [ ok ]
 * vmware-any-any-update109.tar.gz size ;-) ...                           [ ok ]
 * checking ebuild checksums ;-) ...                                      [ ok ]
 * checking auxfile checksums ;-) ...                                     [ ok ]
 * checking miscfile checksums ;-) ...                                    [ ok ]
 * checking vmware-any-any-update109.tar.gz ;-) ...                       [ ok ]
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Could not find a Makefile in the kernel source directory.
 * Please ensure that /usr/src/linux points to a complete set of Linux sources
 *
 * ERROR: app-emulation/vmware-modules-1.0.0.15-r1 failed.
 * Call stack:
 *   ebuild.sh, line 1658:   Called dyn_setup
 *   ebuild.sh, line 719:   Called qa_call 'pkg_setup'
 *   ebuild.sh, line 44:   Called pkg_setup
 *   ebuild.sh, line 1327:   Called vmware-mod_pkg_setup
 *   vmware-mod.eclass, line 31:   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/vmware-modules-1.0.0.15-r1/temp/build.log'.
 *