default/linux/x86/10.0
# Check 'eselect profile list'.
# Find the number that corresponds with the default/linux/x86/10.0 profile.
# Use 'eselect profile set <number>' to set a new /etc/make.profile symlink.
#
# Reference: http://www.gentoo.org/doc/en/gentoo-upgrading.xml
# See: "General instructions" in Section 3. "Profile updating instructions"