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#!@GENTOO_PORTAGE_EPREFIX@/bin/bash
# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
PARENT_EPREFIX="@GENTOO_PORTAGE_EPREFIX@"
PARENT_CHOST="@GENTOO_PORTAGE_CHOST@"
CHILD_EPREFIX=
CHILD_PROFILE=
#
# get ourselfs the functions.sh script for ebegin/eend/etc.
#
for f in \
/lib/gentoo/functions.sh \
/etc/init.d/functions.sh \
/sbin/functions.sh \
; do
if [[ -r ${PARENT_EPREFIX}${f} ]] ; then
. "${PARENT_EPREFIX}${f}"
f=found
break
fi
done
if [[ ${f} != found ]] ; then
echo "Cannot find Gentoo functions, aborting." >&2
exit 1
fi
for arg in "$@"; do
case "${arg}" in
--eprefix=*) CHILD_EPREFIX="${arg#--eprefix=}" ;;
--profile=*) CHILD_PROFILE="${arg#--profile=}" ;;
--help)
einfo "$0 usage:"
einfo " --eprefix=[PATH] Path to new EPREFIX to create stacked to the prefix"
einfo " where this script is installed (${PARENT_EPREFIX})"
einfo " --profile=[PATH] The absolute path to the profile to use. This path"
einfo " must point to a directory within ${PARENT_EPREFIX}"
exit 0
;;
esac
done
#
# sanity check of given values
#
test -n "${CHILD_EPREFIX}" || { eerror "no eprefix argument given"; exit 1; }
test -d "${CHILD_EPREFIX}" && { eerror "${CHILD_EPREFIX} already exists"; exit 1; }
test -n "${CHILD_PROFILE}" || { eerror "no profile argument given"; exit 1; }
test -d "${CHILD_PROFILE}" || { eerror "${CHILD_PROFILE} does not exist"; exit 1; }
einfo "creating stacked prefix ${CHILD_EPREFIX}"
#
# functions needed below.
#
eend_exit() {
eend $1
[[ $1 != 0 ]] && exit 1
}
#
# create the directories required to bootstrap the least.
#
ebegin "creating directory structure"
(
set -e
mkdir -p "${CHILD_EPREFIX}"/etc/portage/profile/use.mask
mkdir -p "${CHILD_EPREFIX}"/etc/portage/profile/use.force
mkdir -p "${CHILD_EPREFIX}"/etc/portage/env
mkdir -p "${CHILD_EPREFIX}"/etc/portage/package.env
ln -s "${PARENT_EPREFIX}"/etc/portage/repos.conf "${CHILD_EPREFIX}"/etc/portage/repos.conf
)
eend_exit $?
#
# create a make.conf and set PORTDIR and PORTAGE_TMPDIR
#
ebegin "creating make.conf"
(
set -e
echo "#"
echo "# The following values where taken from the parent prefix's"
echo "# environment. Feel free to adopt them as you like."
echo "#"
echo "CFLAGS=\"$(portageq envvar CFLAGS)\""
echo "CXXFLAGS=\"$(portageq envvar CXXFLAGS)\""
echo "MAKEOPTS=\"$(portageq envvar MAKEOPTS)\""
niceness=$(portageq envvar PORTAGE_NICENESS || true)
[[ -n ${niceness} ]] &&
echo "PORTAGE_NICENESS=\"${niceness}\""
echo
echo "# Mirrors from parent prefix."
echo "GENTOO_MIRRORS=\"$(portageq envvar GENTOO_MIRRORS || true)\""
echo
echo "# Below comes the prefix-stack setup. Only change things"
echo "# if you know exactly what you are doing!"
echo "EPREFIX=\"${CHILD_EPREFIX}\""
echo "PORTAGE_OVERRIDE_EPREFIX=\"${PARENT_EPREFIX}\""
echo "BROOT=\"${PARENT_EPREFIX}\""
) > "${CHILD_EPREFIX}"/etc/portage/make.conf
eend_exit $?
ebegin "creating use.mask/prefix-stack"
printf -- '-%s\n' prefix{,-guest,-stack} > "${CHILD_EPREFIX}"/etc/portage/profile/use.mask/prefix-stack
eend_exit $?
ebegin "creating use.force/prefix-stack"
printf -- '%s\n' prefix{,-guest,-stack} > "${CHILD_EPREFIX}"/etc/portage/profile/use.force/prefix-stack
eend_exit $?
ebegin "creating env/host-cc.conf"
cat > "${CHILD_EPREFIX}"/etc/portage/env/host-cc.conf <<-EOM
CC=${PARENT_CHOST}-gcc
CXX=${PARENT_CHOST}-g++
EOM
eend_exit $?
ebegin "creating package.env/prefix-stack"
cat > "${CHILD_EPREFIX}"/etc/portage/package.env/prefix-stack <<-'EOM'
# merge with the parent's chost. this forces the use of the parent
# compiler, which generally would be illegal - this is an exception.
# This is required for example on winnt, because the wrapper has to
# be able to use/resolve symlinks, etc. native winnt binaries miss
# that ability, but cygwin binaries don't.
sys-devel/gcc-config host-cc.conf
sys-apps/gentoo-functions host-cc.conf
EOM
eend_exit $?
#
# create the make.profile symlinks.
#
ebegin "creating make.profile"
(
ln -s "${CHILD_PROFILE}" "${CHILD_EPREFIX}/etc/portage/make.profile"
)
eend_exit $?
#
# adjust permissions of generated files.
#
ebegin "adjusting permissions"
(
set -e
chmod 644 "${CHILD_EPREFIX}"/etc/portage/make.conf
chmod 644 "${CHILD_EPREFIX}"/etc/portage/env/host-cc.conf
chmod 644 "${CHILD_EPREFIX}"/etc/portage/package.env/prefix-stack
)
eend_exit $?
#
# now merge some basics.
#
ebegin "installing required basic packages"
(
set -e
export PORTAGE_CONFIGROOT@=@"${CHILD_EPREFIX}"
export EPREFIX@=@"${CHILD_EPREFIX}"
export PORTAGE_OVERRIDE_EPREFIX@=@"${PARENT_EPREFIX}"
# # this -pv is there to avoid the global update output, which is
# # there on the first emerge run. (thus, just cosmetics).
# emerge --pretend --oneshot --nodeps baselayout-prefix
# let baselayout create the directories
USE@=@"${USE} build" \
emerge --verbose --nodeps --oneshot \
'>=baselayout-prefix-2.6'
# Record the prefix-toolkit into @world file, as it provides the
# env.d telling the PM to manage this stacked Prefix, but may not
# (unlike baselayout) be part of @system set per the profile.
emerge --verbose --nodeps \
prefix-toolkit
emerge --verbose --nodeps --oneshot \
gentoo-functions \
elt-patches \
gnuconfig \
gcc-config
# select the stack wrapper profile from gcc-config
env -i PORTAGE_CONFIGROOT="${CHILD_EPREFIX}" "$(type -P bash)" "${CHILD_EPREFIX}"/usr/bin/gcc-config 1
# do this _after_ selecting the correct compiler!
emerge --verbose --nodeps --oneshot \
libtool
)
eend_exit $?
#
# wow, all ok :)
#
ewarn
ewarn "all done. don't forget to tune ${CHILD_EPREFIX}/etc/portage/make.conf."
ewarn "to enter the new prefix, run \"${CHILD_EPREFIX}/startprefix\"."
ewarn
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