path: root/crossdev

#!/bin/bash
# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

CROSSDEV_VER="@CDEVPV@"

cd /
umask 0022 #159111

if [[ ${ROOT:-/} != "/" ]] ; then
	echo "Sorry, but crossdev does not support ROOT." 1>&2
	exit 2
fi

source /etc/init.d/functions.sh || exit 1
esyslog() { :; }
die() {
	echo
	eerror $*
	eerror If you file a bug, please attach the following logfiles:
	eerror ${PORT_LOGDIR}/cross-${CTARGET}-info.log
	eerror ${logfile}
	exit 1
}

usage() {
	local exit_status=${1:-0}
	shift
cat << EOF
Usage: ${HILITE}crossdev${NORMAL} ${GOOD}[options]${NORMAL} ${BRACKET}--target TARGET${NORMAL}

Options:
    ${GOOD}--b, --binutils${NORMAL} ver   Specify version of binutils to use
    ${GOOD}--g, --gcc${NORMAL} ver        Specify version of gcc to use
    ${GOOD}--k, --kernel${NORMAL} ver     Specify version of kernel headers to use
    ${GOOD}--l, --libc${NORMAL} ver       Specify version of libc to use
    ${GOOD}-S, --stable${NORMAL}          Use latest stable versions as default
    ${GOOD}-C, --clean${NORMAL} target    Uninstall specified target
    ${GOOD}-P, --portage${NORMAL} opts    Options to pass to emerge (see emerge(1))
    ${GOOD}--with[out]-headers${NORMAL}   Build C library headers before C compiler?
Stage Options:
    ${GOOD}-s0, --stage0${NORMAL}         Build just binutils
    ${GOOD}-s1, --stage1${NORMAL}         Also build a C compiler (no libc/C++)
    ${GOOD}-s2, --stage2${NORMAL}         Also build kernel headers
    ${GOOD}-s3, --stage3${NORMAL}         Also build the C library (no C++)
    ${GOOD}-s4, --stage4${NORMAL}         Also build a C++ compiler [default]
Extra Fun (must be run after above stages):
    ${GOOD}--ex-only${NORMAL}             Skip the stage steps above
    ${GOOD}--ex-gcc${NORMAL}              Build extra gcc targets (gcj/ada/etc...)
    ${GOOD}--ex-gdb${NORMAL}              Build a cross gdb
    ${GOOD}--ex-insight${NORMAL}          Build a cross insight
${BRACKET}Target (-t)${NORMAL} takes a tuple ${BRACKET}ARCH-VENDOR-OS-LIBC${NORMAL}; see 'crossdev -t help'
EOF
	[[ -n $* ]] && echo && eerror "Error: $*"
	exit ${exit_status}
}
STAGE_BINUTILS=0
STAGE_C_ONLY=1
STAGE_C_KERNEL=2
STAGE_LIBC=3
STAGE_C_CPP=4
STAGE_DEFAULT=${STAGE_C_CPP}
STAGE_DISP=( "binutils" "C compiler only" "kernel headers" "C compiler & libc" "C/C++ compiler" )

parse_target() {
	CTARGET=${1#cross-}

	[[ -z ${CTARGET} ]] && usage 1

	if [[ ${CTARGET} == "help" ]] ; then
		cat <<-EOF
		Supported Architectures:
		   - alpha                                     - arm / armeb
		   - hppa (parisc)                             - ia64
		   - i386 / i486 / i586 / i686 (x86)           - m68k
		   - mips / mipsel / mips64 / mips64el
		   - powerpc (ppc) / powerpc64 (ppc64)
		   - sparc / sparc64                           - s390 / s390x
		   - sh / sh[1-5] / sh64                       - x86_64 (amd64)
		Supported C Libraries:
		   - glibc (gnu)
		   - klibc       [prob wont work]
		   - newlib      [bare metal/no operating system]
		   - uclibc      [not all arches are ported]
		Special Targets:
		   - avr      http://www.nongnu.org/avr-libc/
		   - bfin     http://blackfin.uclinux.org/
		   - h8300    http://h8300-hms.sourceforge.net/
		   - mingw32  http://www.mingw.org/
		   - msp430   http://mspgcc.sourceforge.net/
		   - nios2    http://www.altera.com/products/ip/processors/nios2/ni2-index.html
		   - xc16x    http://www.infineon.com/
		   - ee / iop / dvp (ps2) [Playstation 2 targets]
		   - ppu / spu (cell) [Cell/Playstation 3 targets]
		Softfloat toolchains:
		   Include 'softfloat' in the 'vendor' field
		   e.g. armeb-softfloat-linux-uclibc  powerpc-booya_softfloat-linux-gnu
		EOF
		exit 0
	fi

	# Allow for laziness
	if [[ ${CTARGET} != *-* ]] ; then
		# First translate portage ARCH to actual tuple
		case ${CTARGET} in
			amd64)      CTARGET="x86_64";;
			parisc*)    CTARGET=${CTARGET/parisc/hppa};;
			ppc|ppc64)  CTARGET=${CTARGET/ppc/powerpc};;
			x86)        CTARGET="i686";;
		esac

		# Then add common suffixes
		case ${CTARGET} in
			i?86|x86_64)
				CTARGET="${CTARGET}-pc-linux-gnu";;
			s390*)
				CTARGET="${CTARGET}-ibm-linux-gnu";;
			alpha*|arm*|cris*|hppa*|ia64*|m68*|mips*|powerpc*|sparc*|sh*)
				CTARGET="${CTARGET}-unknown-linux-gnu";;
			bfin*|h8300*|nios2*|spu*|xc16x*)
				CTARGET="${CTARGET}-elf";;
		esac
	fi

	# Figure out an acceptable portage ARCH for this target
	case ${CTARGET} in
		alpha*)     TARCH=alpha;;
		arm*)       TARCH=arm;;
		hppa*)      TARCH=hppa;;
		ia64*)      TARCH=ia64    WITH_DEF_HEADERS="yes";;
		i?86*)      TARCH=x86;;
		m68*)       TARCH=m68k;;
		mips*)      TARCH=mips;;
		powerpc64*) TARCH=ppc64;;
		powerpc*)   TARCH=ppc;;
		sparc*)     TARCH=sparc;;
		s390*)      TARCH=s390;;
		sh*)        TARCH=sh;;
		x86_64*)    TARCH=amd64;;
		*)          TARCH="*";;
	esac
	case ${CTARGET} in
		*-freebsd*) TARCH="${TARCH}-fbsd";;
	esac

	# Now account for all the "special" architectures out there
	case ${CTARGET} in
		# this is a linux+ target, not microcontroller (below)
		avr32*) :;;

		avr*) KPKG="[none]";
		      LCAT="dev-embedded"; LPKG="avr-libc";
		      GUSE="-fortran" # doesn't work
		      WITH_DEF_HEADERS="no";;

		# due to upstream lameness, build C/C++ at first glance
		*-cygwin)
		      GUSE_DISABLE_STAGE_1=${GUSE_DISABLE_STAGE_1/nocxx};;

		# these are the mingw64 targets that binutils seems to use
		x86_64-*-mingw*|*-w64-mingw*)
		      KPKG="[none]";
		      LCAT="dev-util"; LPKG="mingw64-runtime";;

		mingw*|*-mingw*)
		      WITH_DEF_HEADERS="yes";
		      KCAT="dev-util"; KPKG="w32api";
		      LCAT="dev-util"; LPKG="mingw-runtime";;

		msp430)
		      STAGE_DEFAULT=${STAGE_BINUTILS};;

		nios2*)
		      BPKG="binutils-nios2";
		      GPKG="gcc-nios2";;

		cell) einfo "The cell target is really an alias for the spu/ppu targets"
		      ${CROSSDEV} -t ppu || exit 1
		      ${CROSSDEV} -t spu-elf || exit 1
		      exit 0;;
		spu*) TARCH=ppc64;
		      KPKG="[none]";
		      LPKG="newlib";;
		ppu*) TARCH=ppc64;;

		ps2)  einfo "The ps2 target is really an alias for the ee/iop/dvp targets"
		      ${CROSSDEV} -t ee  || exit 1
		      ${CROSSDEV} -t iop || exit 1
		      ${CROSSDEV} -t dvp || exit 1
		      exit 0;;
		ee*)  TARCH=mips;
		      KPKG="[none]"
		      GVER="3.2.2"; BVER="2.14";
		      STAGE_DEFAULT=${STAGE_C_ONLY};
		      GUSE=${GUSE_DISABLE_STAGE_1};;
		iop*) TARCH=mips;
		      GVER="3.2.2"; BVER="2.14";
		      STAGE_DEFAULT=${STAGE_C_ONLY};
		      GUSE=${GUSE_DISABLE_STAGE_1};;
		dvp*) TARCH=mips;
		      GVER="3.2.2"; BVER="2.14";
		      STAGE_DEFAULT=${STAGE_BINUTILS};;
	esac

	# Tweak packages based upon CTARGET
	case ${CTARGET} in
		# Normal Linux host, just diff libc
		*-dietlibc) LPKG="dietlibc"; LCAT="dev-libs";;
		*-gnu*)     LPKG="glibc";;
		*-klibc)    LPKG="klibc";;
		*-uclibc*)  LPKG="uclibc";;
		*-uclinux)  LPKG="uclibc";;

		# Windows targets
		*-cygwin)
			LCAT="dev-libs"; LPKG="cygwin";
			KPKG="[none]";
			;;

		# Bare metal targets
		*-newlib|*-elf)
			LPKG="newlib"
			KPKG="[none]"
			STAGE_DEFAULT=${STAGE_LIBC}
			;;

		# Now for the BSDs ...
		*-freebsd*)
			LCAT="sys-freebsd" LPKG="freebsd-lib"
			KPKG="[none]"
			;;
	esac

	: ${LPKG=[none]}
}

setup_portage_vars() {
	PORTDIR_OVERLAYS=$(portageq envvar PORTDIR_OVERLAY)
	PORTDIR_OVERLAY=${PORTDIR_OVERLAYS%% *}
	PORTDIR=$(portageq envvar PORTDIR)
	PORT_LOGDIR=$(portageq envvar PORT_LOGDIR)
	PORT_LOGDIR=${PORT_LOGDIR:-/var/log/portage}
	export PKGDIR=$(portageq envvar PKGDIR)/cross/${CTARGET}
	export PORTAGE_TMPDIR=$(portageq envvar PORTAGE_TMPDIR)/cross/${CTARGET}
	[[ ! -d ${PORT_LOGDIR} ]] && mkdir -p ${PORT_LOGDIR}
	[[ ! -d ${PORTAGE_TMPDIR} ]] && mkdir -p ${PORTAGE_TMPDIR}
}

uninstall() {
	setup_portage_vars

	ewarn "Uninstalling target '${CTARGET}' ..."

	[[ -d ${PORTDIR_OVERLAY}/cross-${CTARGET} ]] \
		&& rm -r ${PORTDIR_OVERLAY}/cross-${CTARGET}
	sed -i -e "/^cross-${CTARGET}$/d" /etc/portage/categories
	for f in package.{mask,keywords,use} ; do
		f="/etc/portage/${f}"
		if [[ -d ${f} ]] ; then
			rm -f "${f}"/cross-${CTARGET}
			rmdir "${f}" 2>/dev/null
		elif [[ -f ${f} ]] ; then
			sed -i -e "/cross-${CTARGET}\//d" "${f}"
		fi
	done
	rm -rf /etc/portage/env/cross-${CTARGET}
	rmdir /etc/portage/env 2>/dev/null

	rmdir /var/db/pkg/cross-${CTARGET} 2>/dev/null
	if [[ -d /var/db/pkg/cross-${CTARGET} ]] ; then
		export CLEAN_DELAY=0
		cd /var/db/pkg
		for p in cross-${CTARGET}/* ; do
			emerge -qC =${p} || exit 1
		done
	else
		ewarn "${CTARGET}: no packages installed"
	fi
	for b in \
		addr2line ar as c++filt dlltool dllwrap embedspu \
		gprof ld nm objcopy objdump ranlib readelf \
		size strings strip windmc windres
	do
		rm -f /usr/bin/${CTARGET}-${b} /usr/${CTARGET}/bin/${b}
	done
	rm -f /usr/${CTARGET}/{sys-include,usr}
	rm -f /usr/bin/${CTARGET}-{gcc,{c,g}++,cpp,gfortran,gcov}
	rm -f /usr/bin/${CTARGET}-{emerge,fix-root,pkg-config} /usr/bin/emerge-${CTARGET}
	rmdir /usr/${CTARGET}/{include/asm,include} &> /dev/null
	for d in /usr/${CTARGET} /usr/lib/gcc{,-lib}/${CTARGET} ; do
		if [[ ! -d ${d} ]] ; then
			rm -f "${d}" &> /dev/null
		else
			rmdir "${d}" &> /dev/null && continue
			printf "${d}: directory still exists; remove recursively? [y/N] "
			local ans
			read ans
			[[ ${ans} == [Yy]* ]] && rm -rf "${d}"
		fi
	done
	rm -f /etc/env.d/{binutils,gcc}/config-${CTARGET}
	[[ -e /var/db/pkg/cross-${CTARGET} ]] && rmdir /var/db/pkg/cross-${CTARGET}

	exit 0
}

set_withval() {
	local withval varname
	varname=${*#--with-}
	varname=${varname#--without-}
	varname=${varname%%=*}
	if [[ $* == *=* ]] ; then
		withval=${*#*=}
	else
		[[ $* == --with-* ]] && withval="yes" || withval="no"
	fi

	echo WITH_`echo ${varname} | tr '[:lower:]' '[:upper:]'`=\"${withval}\"
}

is_stage() { [[ ${STAGE} -ge $1 ]] ; }
is_s0()    { is_stage 0 ; }
is_s1()    { is_stage 1 ; }
is_s2()    { is_stage 2 ; }
is_s3()    { is_stage 3 ; }
is_s4()    { is_stage 4 ; }
is_s5()    { is_stage 5 ; }

with_headers()   { [[ ${WITH_HEADERS}   == "yes" ]] ; }

ex_fast()    { [[ ${EX_FAST}    == "yes" ]] ; }
ex_gcc()     { [[ ${EX_GCC}     == "yes" ]] ; }
ex_gdb()     { [[ ${EX_GDB}     == "yes" ]] ; }
ex_insight() { [[ ${EX_INSIGHT} == "yes" ]] ; }

hr() {
	local c=${COLUMNS:-0}
	if [[ ${c} -eq 0 ]] ; then
		c=$(stty size 2> /dev/null)
		[[ -z ${c} ]] \
			&& c=50 \
			|| c=${c##* }
	fi
	local ext=${1:-  _  -  ~  -}
	local sext=${ext//?/ }
	local br=$(printf "%$((c + ${#ext}))s")
	local banner=${br//${sext}/${ext}}
	echo "${banner:0:${c}}"
}

##################
### setup vars ###
CROSSDEV=$0
EOPTS=
UOPTS=
TARCH=
HARCH=$(unset ARCH ; portageq envvar ARCH)
CTARGET=
STAGE=""
BCAT="sys-devel"  ; BPKG="binutils"      ; BVER="" ; BUSE=""
GCAT="sys-devel"  ; GPKG="gcc"           ; GVER="" ; GUSE=""
KCAT="sys-kernel" ; KPKG="linux-headers" ; KVER="" ; KUSE=""
LCAT="sys-libs"   ; LPKG=""              ; LVER="" ; LUSE=""
DEFAULT_VER="[latest]"
# These flags are always disabled for cross-gcc; either usually/always broken, or
# not tested, or doesn't make sense, or no one simply cares about them
GUSE_DISABLE="-boundschecking -d -gtk -gcj -libffi -mudflap -objc -objc++ -objc-gc"
# These are disabled only for stage1 gcc
GUSE_DISABLE_STAGE_1="${GUSE_DISABLE} -fortran nocxx -openmp"
GUSE_DISABLE_STAGE_2="${GUSE_DISABLE}"
WITH_HEADERS="COW"   WITH_DEF_HEADERS="yes" #227065 gcc-4.3+ is a pita w/out headers
EX_FAST="no"
EX_GCC="no"
EX_GDB="no"
SET_X="no"

while [[ $# -gt 0 ]] ; do
	case $1 in
	-V|--version)   echo "crossdev-${CROSSDEV_VER}"; exit 0;;
	-t|--target)    shift; parse_target $1;;
	--b|--binutils) shift; BVER=$1;;
	--g|--gcc)      shift; GVER=$1;;
	--k|--kernel)   shift; KVER=$1;;
	--l|--libc)     shift; LVER=$1;;
	-S|--stable)    DEFAULT_VER="[stable]";;
	-C|--clean)     shift; parse_target $1; uninstall;;
	-s?|--stage?)   STAGE=${1:0-1};;
	--ex-only)      EX_FAST="yes";;
	--ex-gcc)       EX_GCC="yes";;
	--ex-gdb)       EX_GDB="yes";;
	--ex-insight)   EX_INSIGHT="yes";;
	--with-*)       eval $(set_withval $1);;
	--without-*)    eval $(set_withval $1);;
	-x)             SET_X="yes";;
	-P|--portage)   UOPTS="${UOPTS} $2"; shift;;
	-b|-d|-p|-v|-q) UOPTS="${UOPTS} $1";;
	-pv|-vp)        UOPTS="${UOPTS} -p -v";;
	-h|--help)      usage;;
	-*)             eerror "UNKNOWN OPTION: '$1'" ; usage 1;;
	*)              parse_target $1;;
	esac
	shift
done
[[ ${SET_X} == "yes" ]] && set -x

BVER=${BVER:-${DEFAULT_VER}}
GVER=${GVER:-${DEFAULT_VER}}
KVER=${KVER:-${DEFAULT_VER}}
LVER=${LVER:-${DEFAULT_VER}}
STAGE=${STAGE:-${STAGE_DEFAULT}}
[[ -z ${CTARGET} ]] && usage 1
for with in HEADERS ; do
	var=WITH_${with} defvar=WITH_DEF_${with}
	[[ ${!var} == "COW" ]] && eval ${var}=${!defvar}
done

#####################
### sanity checks ###
if ! binutils-config --version &> /dev/null ; then
	eerror "Sorry, but your host system needs to have binutils-config"
	eerror "in order to keep from screwing things up."
	eerror "That means you must be running unstable versions of"
	eerror "both binutils and binutils-config."
	exit 1
fi
if ! egrep -qs 'inherit.*toolchain( |$)' /var/db/pkg/sys-devel/gcc-*/*.ebuild ; then
	eerror "Sorry, but your host system needs to have"
	eerror "an unstable version of gcc in order to"
	eerror "keep from screwing things up."
	exit 1
fi

setup_portage_vars
if [[ -z ${PORTDIR_OVERLAY} ]] ; then
	eerror "You need to set PORTDIR_OVERLAY in your make.conf."
	eerror "A standard setting is /usr/local/portage"
	exit 1
fi

if [[ $(unset CHOST ; portageq envvar CHOST) == ${CTARGET} ]] ; then
	eerror "Refusing to create a cross-compiler using the same"
	eerror "target name as your host utils."
	exit 1
fi

# grab user settings
for v in ABI UCLIBC_CPU USE BVER GVER KVER LVER STAGE CFLAGS LDFLAGS ASFLAGS ; do
	if [[ -e /etc/portage/crossdev/${CTARGET}/${v} ]] ; then
		# yes, quotes are needed in this instance (export $var="...")
		export ${v}="$(</etc/portage/crossdev/${CTARGET}/${v})"
		einfo "Restoring user setting '${v}' to '${!v}'"
	fi
	if [[ -e /etc/portage/crossdev/${CTARGET}/env ]] ; then
		einfo "Restoring generic user env settings"
		source /etc/portage/crossdev/${CTARGET}/env
	fi
done

#####################
### do the emerge ###
(
hr -
einfo "crossdev version:      ${CROSSDEV_VER}"
einfo "Host Portage ARCH:     ${HARCH}"
einfo "Target Portage ARCH:   ${TARCH}"
einfo "Target System:         ${CTARGET}"
einfo "Stage:                 ${STAGE} (${STAGE_DISP[${STAGE}]})"
echo
ex_fast || {
is_s0 && {
einfo "binutils:              ${BPKG}-${BVER}"
}
is_s1 && {
einfo "gcc:                   ${GPKG}-${GVER}"
}
is_s2 && {
[[ ${KPKG} != "[none]" ]] && \
einfo "headers:               ${KPKG}-${KVER}"
}
is_s3 && {
einfo "libc:                  ${LPKG}-${LVER}"
}
}
ex_gcc && {
einfo "Extra: gcc pass:       DO IT"
}
ex_gdb && {
einfo "Extra: gdb:            DO IT"
}
ex_insight && {
einfo "Extra: insight:        DO IT"
}
echo
einfo "PORTDIR_OVERLAY:       ${PORTDIR_OVERLAY}"
einfo "PORT_LOGDIR:           ${PORT_LOGDIR}"
einfo "PKGDIR:                ${PKGDIR}"
einfo "PORTAGE_TMPDIR:        ${PORTAGE_TMPDIR}"
hr
) >& ${PORT_LOGDIR}/cross-${CTARGET}-info.log || exit 1
cat ${PORT_LOGDIR}/cross-${CTARGET}-info.log
emerge -v --info >> ${PORT_LOGDIR}/cross-${CTARGET}-info.log

####################################
### Fix up portage files / paths ###

check_trailing_newline() { #267132
	[[ -e $1 ]] || return 0
	if [[ `tail -c 1 "$1" | wc -l` == *0* ]] ; then
		ewarn "Autofixing mangled file: $1"
		echo >> "$1"
	fi
}
set_keywords() {
	local pkg=$1 ver=$2 output
	[[ -z ${pkg} ]] && return 0
	if [[ -f package.keywords ]] ; then
		output="package.keywords"
		sed -i -e "/^cross-${CTARGET}\/${pkg} /d" ${output}
	else
		output="package.keywords/cross-${CTARGET}"
	fi
	check_trailing_newline ${output}
	if [[ ${ver} == "["*"]" ]] || [[ -z ${ver} ]] ; then
		local keywords=""
		case ${ver} in
			"[stable]") keywords="${TARCH}";;
			*)          keywords="${TARCH} ~${TARCH}";;
		esac
		[[ "${TARCH}" != "${HARCH}" ]] && keywords="${keywords} -${HARCH} -~${HARCH}"
		echo "cross-${CTARGET}/${pkg} ${keywords}" >> ${output}
	else
		echo "cross-${CTARGET}/${pkg} * ~* **" >> ${output}
		if [[ -f package.mask ]] ; then
			output="package.mask"
			sed -i -e "/cross-${CTARGET}\/${pkg}/d" ${output}
		else
			output="package.mask/cross-${CTARGET}"
		fi
		check_trailing_newline ${output}
		echo ">cross-${CTARGET}/${pkg}-${ver}" >> ${output}
	fi
}
set_use() {
	local pkg=$1 output
	shift
	local use=$@
	[[ -z ${use} ]] && return 0
	if [[ -f package.use ]] ; then
		output="package.use"
	else
		output="package.use/cross-${CTARGET}"
	fi
	[[ -e ${output} ]] && sed -i -e "/cross-${CTARGET}\/${pkg}/d" ${output}
	check_trailing_newline ${output}
	echo "cross-${CTARGET}/${pkg} ${use}" >> ${output}
}
set_links() {
	local cat=$1 pkg=$2
	local s srcdir=${PORTDIR} d

	d="${PORTDIR_OVERLAY}"/cross-${CTARGET}/${pkg}
	if [[ ! -L ${d} && -d ${d} ]] ; then #211386
		einfo "Leaving existing dir alone: ${d}"
	else
		rm -f "${d}"
		for s in ${PORTDIR_OVERLAYS} ; do
			if [[ -d ${s}/${cat}/${pkg} ]] ; then
				einfo "Using ${cat}/${pkg} from ${s} instead of ${PORTDIR}"
				srcdir=${s}
				break
			fi
		done
		ln -s "${srcdir}"/${cat}/${pkg} "${d}"
	fi
}
set_env() {
	local pkg=$1
	mkdir -p env/cross-${CTARGET}

	cat <<-EOF > env/cross-${CTARGET}/${pkg}
	# make sure multilib crap doesn't screw us over
	ABI=${ABI:-pos}
	LIBDIR_pos="lib"
	CFLAGS_pos=
	CPPFLAGS_pos=
	CXXFLAGS_pos=
	LDFLAGS_pos=
	EOF
}
set_portage() {
	local cat=$1 pkg=$2 ver=$3
	shift ; shift ; shift
	local use=$@

	[[ ${pkg} == "[none]" ]] && return 0

	set_keywords ${pkg} ${ver}
	set_use ${pkg} ${use}
	set_links ${cat} ${pkg}
	set_env ${pkg}
}

mkdir -p /etc/portage
check_trailing_newline /etc/portage/categories
grep -qs "^cross-${CTARGET}$" /etc/portage/categories \
	|| echo cross-${CTARGET} >> /etc/portage/categories
mkdir -p "${PORTDIR_OVERLAY}"/cross-${CTARGET}
cd /etc/portage
for f in package.{keywords,mask,use} ; do
	[[ -f ${f} ]] && continue
	mkdir -p ${f}
	rm -f ${f}/cross-${CTARGET}
done

set_portage ${BCAT} ${BPKG} ${BVER}
set_portage ${GCAT} ${GPKG} ${GVER}
set_portage ${KCAT} ${KPKG} ${KVER}
set_portage ${LCAT} ${LPKG} ${LVER}
set_portage sys-devel gdb
set_portage dev-util insight

#######################################
### Create links for helper scripts ###

for wrapper in emerge fix-root pkg-config ; do
	ln -sf cross-${wrapper} /usr/bin/${CTARGET}-${wrapper}
done
# some people like their tab completion
ln -sf cross-emerge /usr/bin/emerge-${CTARGET}

#################
emerged_with_use() {
	local pkg=$1 use=$2
	grep -qs ${use} /var/db/pkg/cross-${CTARGET}/${pkg}-*/USE
}
set_eopts_on_pkg_status() {
	emerged_with_use "$@" \
		&& EOPTS=${EOPTS_DEF} \
		|| EOPTS=${EOPTS_UP}
}
doemerge() {
	[[ $1 == "[none]" ]] && return 0

	local logfile=${PORT_LOGDIR}/cross-${CTARGET}
	[[ -z $2 ]] \
		&& logfile=${logfile}-$1.log \
		|| logfile=${logfile}-$2.log

	einfo "Log: ${logfile}"
	ebegin "Emerging cross-${2:-$1}"

	set_use $1 ${USE}

	if [[ ${UOPTS/-v} != ${UOPTS} || ${UOPTS/-p} != ${UOPTS} ]] ; then
		emerge cross-${CTARGET}/$1 ${EOPTS} \
			2>&1 | tee ${logfile}
	else
		emerge cross-${CTARGET}/$1 ${EOPTS} \
			>& ${logfile}
	fi
	local _pipestatus=${PIPESTATUS[*]}
	[[ "${_pipestatus// /}" -eq 0 ]] || die "$1 failed :("
	eend 0
}

# We include the '-u' so that we don't re-emerge packages.  Avoid
# using --nodeps as packages have more host depends nowadays (like
# gcc wanting updated mpfr/gmp).  Don't use --oneshot anymore to
# follow normal emerge behavior; people can pass the -1 to portage
# themselves if they want that.
EOPTS_DEF="${UOPTS}"
EOPTS_UP="${EOPTS_DEF} -u"
EOPTS=${EOPTS_UP}
# keep things like --ask from screwing us up
export EMERGE_DEFAULT_OPTS=""

# screw random strictness in cross-compilers
export FEATURES="${FEATURES} -stricter"

# maybe someday this work, but that day != today
USE="${USE} -selinux"

# only allow UCLIBC_CPU from env, not from make.conf/profile
export UCLIBC_CPU=${UCLIBC_CPU}

ex_fast || {

ebegin "Forcing the latest versions of {binutils,gcc}-config/gnuconfig"
emerge {binutils,gcc}-config gnuconfig -qu --ignore-default-opts &> /dev/null
eend $? || exit 1

doemerge ${BPKG}

is_s1 || exit 0
if with_headers ; then
USE="${KUSE} ${USE}" CROSSCOMPILE_OPTS="headers-only" \
	doemerge ${KPKG} ${KPKG}-quick
[[ -n ${LPKG} ]] && \
USE="${LUSE} ${USE}" CROSSCOMPILE_OPTS="headers-only" \
	doemerge ${LPKG} ${LPKG}-headers
fi
USE="${GUSE} ${USE} ${GUSE_DISABLE_STAGE_1}" CROSSCOMPILE_OPTS="bootstrap" \
	doemerge ${GPKG} ${GPKG}-stage1

is_s2 || exit 0
set_eopts_on_pkg_status ${KPKG} crosscompile_opts_headers-only
USE="${KUSE} ${USE}" CROSSCOMPILE_OPTS="" \
	doemerge ${KPKG}

is_s3 || exit 0
[[ -z ${LPKG} ]] && die "Invalid target '${CTARGET}': unknown libc"
set_eopts_on_pkg_status ${LPKG} crosscompile_opts_headers-only
USE="${LUSE} ${USE}" CROSSCOMPILE_OPTS="" \
	doemerge ${LPKG}

is_s4 || exit 0
set_eopts_on_pkg_status ${GPKG} crosscompile_opts_bootstrap
EOPTS="${EOPTS_UP} --newuse"
USE="${GUSE} ${USE} ${GUSE_DISABLE_STAGE_2}" \
	doemerge ${GPKG} ${GPKG}-stage2

}

EOPTS="${EOPTS_UP} --newuse"
ex_gcc && USE="${GUSE} ${USE}" doemerge ${GPKG} ${GPKG}-extra
ex_gdb && doemerge gdb
ex_insight && doemerge insight

exit 0