#
#
# create gentoo chroot compile environment for SpbLinux 2.2
#
# prepare a partition (preferred) or a directory for gentoo (e.g. /gentoo)
# with enough space for gentoo and all build trees (>20GB)
# and cd into this directory (cd /gentoo)
#
# either download precompiled stage3 from spblinux.de/2.2/
# wget http://spblinux.de/2.2/build/gentoo/stage3-i686-spb2.2.tar.bz2
# or build from scratch (select your mirror on http://www.gentoo.org/main/en/mirrors.xml):
# wget http://mirror.switch.ch/ftp/mirror/gentoo/releases/x86/2007.0/stages/stage3-i686-2007.0.tar.bz2
# and unpack it with tar -xpjf stage3...
#
# cp /etc/resolv.conf etc/
# cp /usr/share/zoneinfo/Europe/Zurich /etc/localtime
# place for overlays:
# mkdir /etc/spb2
# mkdir /etc/spb2/portage
# edit etc/make.conf (or use http://spblinux.de/2.2/build/gentoo/make.conf)
# - xen domU compatibility: USE: nptonly and CFLAGS: -mno-tls-direct-seg-refs
# - small system: USE: -ipv6 -nls -pam
# - cpu type: CFLAGS: -march=pentium-mmx -mtune=generic
#   (note: -mtune=generic is gcc >= gcc-4.2.x only! Else use -mtune=i586)
# - allow recent (unstable) versions: ACCEPT_KEYWORDS="~x86"
# get current gentoo portage tree
# wget http://mirror.switch.ch/ftp/mirror/gentoo/snapshots/portage-latest.tar.bz2
# tar -C usr/ -xpjf portage-latest.tar.bz2 
# chroot /gentoo bash -l
# mount -t proc none /proc
# emerge --sync
# emerge portage
# etc-update
#
# if built from scratch (vanilla gentoo stage3) the whole stage3 gentoo tree
# has to be rebuilt; this applies the new USE and CFLAGS flags
# (and takes some time...):
# (reference: http://gentoo-wiki.com/HOWTO_Xen_and_Gentoo#TLS_and_CFLAGS)
# emerge -evat world
#
# if a private stage3 with the result of emerge -evat world should be built
# see instructions in stage3.spec
#