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#!/bin/bash
# Copyright 2008-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
if [[ $1 == "--help" || $1 == "-h" ]] ; then
cat <<-EOF
Usage: emerge-wrapper [--target <chost>] <--init|commands for cross-emerge>
emerge-wrapper is used in one of two ways:
- Use --init to setup cross-toolchain environment(s)
- Pass the command line through to cross-emerge
EOF
exit 0
fi
PREFIX="__PREFIX__"
# Enable this script to be manually installed while debugging
[[ ${PREFIX} == \_\_\P\R\E\F\I\X\_\_ ]] && PREFIX="/usr"
err() { echo "emerge-wrapper: $*" 1>&2; exit 1; }
emit_setup_warning()
{
if ! ${setup_warning} ; then
setup_warning=true
echo "!!! WARNING - Cannot auto-configure CHOST ${CHOST};"
echo "!!! You should edit ${conf}"
echo "!!! by hand to complete your configuration."
fi
echo "!!! $*"
}
cross_wrap_etc()
{
[[ $1 == "-q" ]] || echo "${CHOST}: setting up cross basics in ${SYSROOT}/etc"
setup_warning=false
cp -a "${PREFIX}"/share/crossdev/etc ${SYSROOT}/ || return 1
local conf=${SYSROOT}/etc/portage/make.conf
# Re-use existing CHOST->portage ARCH mapping code
ARCH=$(
inherit() { :; }
. "${MAIN_REPO_PATH}"/eclass/toolchain-funcs.eclass
tc-arch
)
[[ ${ARCH} == "unknown" ]] && emit_setup_warning "No ARCH is known for this target."
LIBC="__LIBC__"
case ${CHOST} in
*gnu*) LIBC=glibc ;;
*uclibc*) LIBC=uclibc ;;
*) emit_setup_warning "No LIBC is known for this target." ;;
esac
sed -i \
-e "s:__LIBC__:${LIBC}:g" \
-e "s:__ARCH__:${ARCH}:g" \
-e "s:__CHOST__:${CHOST}:g" \
-e "s:__CBUILD__:${CBUILD}:g" \
"${conf}"
# Try to figure out the libc version & os headers to avoid installing over top of it.
# XXX: Would be nice to use virtual/libc and virtual/os-headers here ...
cd "${SYSROOT}/etc/portage"
mkdir -p profile
qlist -ICv "cross-${CHOST}/" | \
egrep '/(linux-headers|glibc|musl|newlib|uclibc)-' | \
sed "s:^[^/]*:sys-libs:" \
> profile/package.provided
return 0
}
cross_wrap_bin()
{
[[ $1 == "-q" ]] || echo "${CHOST}: Setting up symlinks"
pushd "${0%/*}" >/dev/null
local wrapper
for wrapper in emerge fix-root pkg-config ; do
ln -sf cross-${wrapper} ${CHOST}-${wrapper}
done
# some people like their tab completion
ln -sf cross-emerge emerge-${CHOST}
popd >/dev/null
}
cross_wrap()
{
SYSROOT=/usr/${CHOST}
cross_wrap_bin "$@" || return $?
if [[ -d ${SYSROOT} ]] && [[ ! -d ${SYSROOT}/etc ]] ; then
cross_wrap_etc "$@"
fi
return $?
}
cross_init()
{
if [[ ${CHOST} == "wrapper" ]] ; then
err "missing --target <CHOST> option"
fi
# Initialize env for just one target. This is the automated behavior
# when crossdev is setting things up for people.
cross_wrap -q
}
# CBUILD must be the first thing we export, but might as well avoid
# running portageq multiple times ...
import_vars="DISTDIR MAKEOPTS GENTOO_MIRRORS"
eval $(portageq envvar -v CBUILD ${import_vars})
export CBUILD
# Probably shouldn't hardcode "gentoo" here.
MAIN_REPO_PATH=$(portageq repositories_configuration / | gawk '
{
if ($1 == "main-repo") {
main_repo = $NF
} else if ($1 ~ /^\[/) {
locs[repo_name] = loc
repo_name = gensub(/\[([^\]]*)\]/, "\\1", "", $1)
} else if ($1 == "location") {
loc = $3
}
}
END { print(locs[main_repo]) }
')
# Get default CHOST value from program name
CHOST=${0##*/}
CHOST=${CHOST%-emerge}
CHOST=${CHOST#emerge-}
export CHOST
if [[ $1 == "--target" ]] ; then
CHOST=$2
shift 2
fi
if [[ $1 == "--init" ]] ; then
cross_init
exit $?
fi
if [[ $CHOST == "wrapper" ]] ; then
echo "After running this program with the --init option as root"
echo "you can call it directly like emerge-wrapper --target CHOST <emerge options>"
echo "or using the emerge-CHOST wrappers"
exit 1
fi
type -P -- ${CHOST}-gcc >/dev/null || err "you need to 'crossdev $CHOST' first"
exec cross-emerge "$@"
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