emerge -up baselayout
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild U ] sys-kernel/linux-headers-2.6.23 [2.6.19.2-r2]
[ebuild U ] sys-apps/coreutils-6.9-r1 [6.9]
[ebuild U ] sys-apps/sysvinit-2.86-r9 [2.86-r8]
[ebuild U ] sys-libs/readline-5.2_p7 [5.2_p2]
[ebuild U ] sys-apps/baselayout-1.12.10-r5 [1.12.10-r3]
[ebuild U ] sys-apps/module-init-tools-3.4 [3.2.2-r3] USE="-old-linux%"
[blocks B ] <sys-apps/baselayout-2.0.0_rc (is blocking sys-apps/makedev-3.23.1)